Merge #20861: BIP 350: Implement Bech32m and use it for v1+ segwit addresses

03346022d611871f2cc185440b19d928b9264d9d naming nits (Fabian Jahr)
2e7c80fb5be82ad4a3f737cab65b31f70a772a23 Add signet support to gen_key_io_test_vectors.py (Pieter Wuille)
fe5e495c31de47b0ec732b943db11fe345d874af Use Bech32m encoding for v1+ segwit addresses (Pieter Wuille)
25b1c6e13ddf1626210d5e3d37298d1f3a78a94f Add Bech32m test vectors (Pieter Wuille)
da2bb6976dadeec682d163c258c9afecc87d6428 Implement Bech32m encoding/decoding (Pieter Wuille)

Pull request description:

  This implements [BIP 350](https://github.com/bitcoin/bips/blob/master/bip-0350.mediawiki):
  * For segwit v1+ addresses, a new checksum algorithm called Bech32m is used.
  * Segwit v0 address keep using Bech32 as specified in [BIP 173](https://github.com/bitcoin/bips/blob/master/bip-0173.mediawiki).

ACKs for top commit:
  Sjors:
    utACK 0334602
  jnewbery:
    utACK 03346022d6
  achow101:
    ACK 0334602
  fjahr:
    re-ACK 0334602
  benthecarman:
    ACK 03346022d611871f2cc185440b19d928b9264d9d

Tree-SHA512: 4424cfd44869d813d6152fb3ed867b204036736bc2344a039b93700b6f36a43e9110478f138eb81c97c77ab27ecb776dada5ba632cb5a3a9d244924d2540a557

4 files changed, 479 insertions, 328 deletions

diff --git a/src/test/bech32_tests.cpp b/src/test/bech32_tests.cpp
index a2098f4f56..2651e46430 100644
--- a/src/test/bech32_tests.cpp
+++ b/src/test/bech32_tests.cpp
@@ -10,7 +10,7 @@
 
 BOOST_FIXTURE_TEST_SUITE(bech32_tests, BasicTestingSetup)
 
-BOOST_AUTO_TEST_CASE(bip173_testvectors_valid)
+BOOST_AUTO_TEST_CASE(bech32_testvectors_valid)
 {
     static const std::string CASES[] = {
         "A12UEL5L",
@@ -22,15 +22,35 @@ BOOST_AUTO_TEST_CASE(bip173_testvectors_valid)
         "?1ezyfcl",
     };
     for (const std::string& str : CASES) {
-        auto ret = bech32::Decode(str);
-        BOOST_CHECK(!ret.first.empty());
-        std::string recode = bech32::Encode(ret.first, ret.second);
+        const auto dec = bech32::Decode(str);
+        BOOST_CHECK(dec.encoding == bech32::Encoding::BECH32);
+        std::string recode = bech32::Encode(bech32::Encoding::BECH32, dec.hrp, dec.data);
         BOOST_CHECK(!recode.empty());
         BOOST_CHECK(CaseInsensitiveEqual(str, recode));
     }
 }
 
-BOOST_AUTO_TEST_CASE(bip173_testvectors_invalid)
+BOOST_AUTO_TEST_CASE(bech32m_testvectors_valid)
+{
+    static const std::string CASES[] = {
+        "A1LQFN3A",
+        "a1lqfn3a",
+        "an83characterlonghumanreadablepartthatcontainsthetheexcludedcharactersbioandnumber11sg7hg6",
+        "abcdef1l7aum6echk45nj3s0wdvt2fg8x9yrzpqzd3ryx",
+        "11llllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllludsr8",
+        "split1checkupstagehandshakeupstreamerranterredcaperredlc445v",
+        "?1v759aa"
+    };
+    for (const std::string& str : CASES) {
+        const auto dec = bech32::Decode(str);
+        BOOST_CHECK(dec.encoding == bech32::Encoding::BECH32M);
+        std::string recode = bech32::Encode(bech32::Encoding::BECH32M, dec.hrp, dec.data);
+        BOOST_CHECK(!recode.empty());
+        BOOST_CHECK(CaseInsensitiveEqual(str, recode));
+    }
+}
+
+BOOST_AUTO_TEST_CASE(bech32_testvectors_invalid)
 {
     static const std::string CASES[] = {
         " 1nwldj5",
@@ -49,8 +69,32 @@ BOOST_AUTO_TEST_CASE(bip173_testvectors_invalid)
         "A12uEL5L",
     };
     for (const std::string& str : CASES) {
-        auto ret = bech32::Decode(str);
-        BOOST_CHECK(ret.first.empty());
+        const auto dec = bech32::Decode(str);
+        BOOST_CHECK(dec.encoding == bech32::Encoding::INVALID);
+    }
+}
+
+BOOST_AUTO_TEST_CASE(bech32m_testvectors_invalid)
+{
+    static const std::string CASES[] = {
+        " 1xj0phk",
+        "\x7f""1g6xzxy",
+        "\x80""1vctc34",
+        "an84characterslonghumanreadablepartthatcontainsthetheexcludedcharactersbioandnumber11d6pts4",
+        "qyrz8wqd2c9m",
+        "1qyrz8wqd2c9m",
+        "y1b0jsk6g",
+        "lt1igcx5c0",
+        "in1muywd",
+        "mm1crxm3i",
+        "au1s5cgom",
+        "M1VUXWEZ",
+        "16plkw9",
+        "1p2gdwpf"
+    };
+    for (const std::string& str : CASES) {
+        const auto dec = bech32::Decode(str);
+        BOOST_CHECK(dec.encoding == bech32::Encoding::INVALID);
     }
 }
 
diff --git a/src/test/data/key_io_invalid.json b/src/test/data/key_io_invalid.json
index 9b52943ac6..abe07dad24 100644
--- a/src/test/data/key_io_invalid.json
+++ b/src/test/data/key_io_invalid.json
@@ -6,177 +6,207 @@
         "x"
     ],
     [
-        "37qgekLpCCHrQuSjvX3fs496FWTGsHFHizjJAs6NPcR47aefnnCWECAhHV6E3g4YN7u7Yuwod5Y"
+        "2v7k5Bb8Lr1MMgTgW6HAf5YHXi6BzpPjHpQ4srD4RSwHYpzXKiXmLAgiLhkXvp3JF5v7nq45EWr"
     ],
     [
-        "dzb7VV1Ui55BARxv7ATxAtCUeJsANKovDGWFVgpTbhq9gvPqP3yv"
+        "RAZzCGtMbiUgMiiyrZySrSpdfnQReFXA3r"
     ],
     [
-        "MuNu7ZAEDFiHthiunm7dPjwKqrVNCM3mAz6rP9zFveQu14YA8CxExSJTHcVP9DErn6u84E6Ej7S"
+        "NYamy7tcPQTzoU5iyQojD3sqhiz7zxkvn8"
     ],
     [
-        "rPpQpYknyNQ5AEHuY6H8ijJJrYc2nDKKk9jjmKEXsWzyAQcFGpDLU2Zvsmoi8JLR7hAwoy3RQWf"
+        "geaFG555Ex5nyRf7JjW6Pj2GwZA8KYxtJJLbr1eZhVW75STbYBZeRszy3wg4pkKdF4ez9J4wQiz"
     ],
     [
-        "4Uc3FmN6NQ6zLBK5QQBXRBUREaaHwCZYsGCueHauuDmJpZKn6jkEskMB2Zi2CNgtb5r6epWEFfUJq"
+        "2Cxmid3c2XQ2zvQ8SA1ha2TKqvqbJS9XFmXRsCneBS3Po7Qqb65z5zNdsoF9AfieXFcpoVPmkmfa"
     ],
     [
-        "7aQgR5DFQ25vyXmqZAWmnVCjL3PkBcdVkBUpjrjMTcghHx3E8wb"
+        "gaJ7UVge2njVg9tFTetJrtHgruMm7aQDiSAxfHrVEgzK8N2ooagDVmDkdph434xzc4K96Gjyxcs"
     ],
     [
-        "17QpPprjeg69fW1DV8DcYYCKvWjYhXvWkov6MJ1iTTvMFj6weAqW7wybZeH57WTNxXVCRH4veVs"
+        "5JN5BEVQPZ3tAiatz1RGXkrJuE3EC6bervMaPb38wTNgEuZCeqp"
     ],
     [
-        "KxuACDviz8Xvpn1xAh9MfopySZNuyajYMZWz16Dv2mHHryznWUp3"
+        "3TnFbyUtBRS5rE1KTW81qLVspjJNaB3uu6uuvLjxhZo2DB6PCGh"
     ],
     [
-        "7nK3GSmqdXJQtdohvGfJ7KsSmn3TmGqExug49583bDAL91pVSGq5xS9SHoAYL3Wv3ijKTit65th"
+        "7UgSZGaMaTc4d2mdEgcGBFiMeS6eMsithGUqvBsKTQdGzD7XQDbMEYo3gojdbXEPbUdFF3CQoK72f"
     ],
     [
-        "cTivdBmq7bay3RFGEBBuNfMh2P1pDCgRYN2Wbxmgwr4ki3jNUL2va"
+        "9261wfqQqruNDnBDhbbb4tN9oKA1KpRFHeoYeufyJApVGixyAG4V"
     ],
     [
-        "gjMV4vjNjyMrna4fsAr8bWxAbwtmMUBXJS3zL4NJt5qjozpbQLmAfK1uA3CquSqsZQMpoD1g2nk"
+        "cS824CTUh18scFmYuqt6BgxuRhdR4dEEnCHs3fzBbcyQgbfasHbw"
     ],
     [
-        "emXm1naBMoVzPjbk7xpeTVMFy4oDEe25UmoyGgKEB1gGWsK8kRGs"
+        "tc1q0ywf7wkz6t580n3yemd3ucfw8jxn93tpc6wskt"
     ],
     [
-        "7VThQnNRj1o3Zyvc7XHPRrjDf8j2oivPTeDXnRPYWeYGE4pXeRJDZgf28ppti5hsHWXS2GSobdqyo"
+        "bt1pxeeuh96wpm5c6u3kavts2qgwlv6y8um7u7ga6ltlwrhrv7w9vers8lgt3k"
     ],
     [
-        "1G9u6oCVCPh2o8m3t55ACiYvG1y5BHewUkDSdiQarDcYXXhFHYdzMdYfUAhfxn5vNZBwpgUNpso"
+        "tb130lvl2lyugsk2tf3zhwcjjv39dmwt2tt7ytqaexy8edwcuwks6p5scll5kz"
     ],
     [
-        "31QQ7ZMLkScDiB4VyZjuptr7AEc9j1SjstF7pRoLhHTGkW4Q2y9XELobQmhhWxeRvqcukGd1XCq"
+        "bcrt1rhsveeudk"
     ],
     [
-        "DHqKSnpxa8ZdQyH8keAhvLTrfkyBMQxqngcQA5N8LQ9KVt25kmGN"
+        "bc10rmfwl8nxdweeyc4sf89t0tn9fv9w6qpyzsnl2r4k48vjqh03qas9asdje0rlr0phru0wqw0p"
     ],
     [
-        "2LUHcJPbwLCy9GLH1qXmfmAwvadWw4bp4PCpDfduLqV17s6iDcy1imUwhQJhAoNoN1XNmweiJP4i"
+        "tb1qjqnfsuatr54e957xzg9sqk7yqcry9lns"
     ],
     [
-        "7USRzBXAnmck8fX9HmW7RAb4qt92VFX6soCnts9s74wxm4gguVhtG5of8fZGbNPJA83irHVY6bCos"
+        "bcrt1q8p08mv8echkf3es027u4cdswxlylm3th76ls8v6y4zy4vwsavngpr4e4td"
     ],
     [
-        "1DGezo7BfVebZxAbNT3XGujdeHyNNBF3vnficYoTSp4PfK2QaML9bHzAMxke3wdKdHYWmsMTJVu"
+        "BC1QNC2H66VLWTWTW52DP0FYUSNU3QQG5VT4V"
     ],
     [
-        "2D12DqDZKwCxxkzs1ZATJWvgJGhQ4cFi3WrizQ5zLAyhN5HxuAJ1yMYaJp8GuYsTLLxTAz6otCfb"
+        "tb1qgk665m2auw09rc7pqyf7aulcuhmatz9xqtr5mxew7zuysacaascqs9v0vn"
     ],
     [
-        "8AFJzuTujXjw1Z6M3fWhQ1ujDW7zsV4ePeVjVo7D1egERqSW9nZ"
+        "bcrt17CAPP7"
     ],
     [
-        "163Q17qLbTCue8YY3AvjpUhotuaodLm2uqMhpYirsKjVqnxJRWTEoywMVY3NbBAHuhAJ2cF9GAZ"
+        "bc1qxmf2d6aerjzam3rur0zufqxqnyqfts5u302s7x"
     ],
     [
-        "2MnmgiRH4eGLyLc9eAqStzk7dFgBjFtUCtu"
+        "tb1qn8x5dnzpexq7nnvrvnhwr9c3wkakpcyu9wwsjzq9pstkwg0t6qhs4l3rv6"
     ],
     [
-        "461QQ2sYWxU7H2PV4oBwJGNch8XVTYYbZxU"
+        "BCRT1Q397G2RNVYRL5LK07CE8NCKHVKP8Z4SC9U0MVH9"
     ],
     [
-        "2UCtv53VttmQYkVU4VMtXB31REvQg4ABzs41AEKZ8UcB7DAfVzdkV9JDErwGwyj5AUHLkmgZeobs"
+        "bc1pgxwyajq0gdn389f69uwn2fw9q0z5c9s063j5dgkdd23ajaud4hpsercr9h"
     ],
     [
-        "cSNjAsnhgtiFMi6MtfvgscMB2Cbhn2v1FUYfviJ1CdjfidvmeW6mn"
+        "tb1z6mnmp5k542l6yk4ul0mp4rq3yvz44lfm"
     ],
     [
-        "gmsow2Y6EWAFDFE1CE4Hd3Tpu2BvfmBfG1SXsuRARbnt1WjkZnFh1qGTiptWWbjsq2Q6qvpgJVj"
+        "bcrt17capp7"
     ],
     [
-        "nksUKSkzS76v8EsSgozXGMoQFiCoCHzCVajFKAXqzK5on9ZJYVHMD5CKwgmX3S3c7M1U3xabUny"
+        "2D2bqvKseKHdoKjCNvjVULUgmxHu9hjKGwDbPRjTRH59tsHNLeyKwq3vyVBbo9LByY9wiapqjwFY"
     ],
     [
-        "L3favK1UzFGgdzYBF2oBT5tbayCo4vtVBLJhg2iYuMeePxWG8SQc"
+        "2SSjAim4wZpeQRe5zTj1qqS6Li9ttJDaZ3ze"
     ],
     [
-        "7VxLxGGtYT6N99GdEfi6xz56xdQ8nP2dG1CavuXx7Rf2PrvNMTBNevjkfgs9JmkcGm6EXpj8ipyPZ"
+        "mi9H6MjLwXxy9kxe1x4ToxyLRBsmcZxgVi"
     ],
     [
-        "2mbZwFXF6cxShaCo2czTRB62WTx9LxhTtpP"
+        "VciXoxEitcn88jy197J9n9cpJ1pZahzU3SyWUiHqLgcfjttLEEJz"
     ],
     [
-        "dB7cwYdcPSgiyAwKWL3JwCVwSk6epU2txw"
+        "KppmwADGoExPT9Eq5hjRWpWFDbzJyfzHFgsfxBiDHNpVBgWPRNuy"
     ],
     [
-        "HPhFUhUAh8ZQQisH8QQWafAxtQYju3SFTX"
+        "TN7EQXMxKffzvHo54yHHu9R4ks9f5gWBW3MMVf5k72zAqrgVK9ys"
     ],
     [
-        "4ctAH6AkHzq5ioiM1m9T3E2hiYEev5mTsB"
+        "92dbrMEYzP5dD5UhQ6maNkCQ4GLG42BM4Gc6XKZzSSMSfosfkkcB"
     ],
     [
-        "Hn1uFi4dNexWrqARpjMqgT6cX1UsNPuV3cHdGg9ExyXw8HTKadbktRDtdeVmY3M1BxJStiL4vjJ"
+        "J7VQxPxyzuWEkRstQWpCz2AgysEz1APgnWCEQrFvkN3umAnCrhQF"
     ],
     [
-        "Sq3fDbvutABmnAHHExJDgPLQn44KnNC7UsXuT7KZecpaYDMU9Txs"
+        "tc1qymllj6c96v5qj2504y27ldtner6eh8ldx38t83"
     ],
     [
-        "6TqWyrqdgUEYDQU1aChMuFMMEimHX44qHFzCUgGfqxGgZNMUVWJ"
+        "bt1flep4g"
     ],
     [
-        "giqJo7oWqFxNKWyrgcBxAVHXnjJ1t6cGoEffce5Y1y7u649Noj5wJ4mmiUAKEVVrYAGg2KPB3Y4"
+        "tb13c553hwygcgj48qwmr9f8q0hgdcfklyaye5sxzcpcjnmxv4z506xs90tchn"
     ],
     [
-        "cNzHY5e8vcmM3QVJUcjCyiKMYfeYvyueq5qCMV3kqcySoLyGLYUK"
+        "bcrt1tyddyu"
     ],
     [
-        "37uTe568EYc9WLoHEd9jXEvUiWbq5LFLscNyqvAzLU5vBArUJA6eydkLmnMwJDjkL5kXc2VK7ig"
+        "bc10qssq2mknjqf0glwe2f3587wc4jysvs3f8s6chysae6hcl6fxzdm4wxyyscrl5k9f5qmnf05a"
     ],
     [
-        "EsYbG4tWWWY45G31nox838qNdzksbPySWc"
+        "tb1q425lmgvxdgtyl2m6xuu2pc354y4fvgg8"
     ],
     [
-        "nbuzhfwMoNzA3PaFnyLcRxE9bTJPDkjZ6Rf6Y6o2ckXZfzZzXBT"
+        "bcrt1q9wp8e5d2u3u4g0pll0cy7smeeuqezdun9xl439n3p2gg4fvgfvk3hu52hj"
     ],
     [
-        "cQN9PoxZeCWK1x56xnz6QYAsvR11XAce3Ehp3gMUdfSQ53Y2mPzx"
+        "bc1qrz5acazpue8vl4zsaxn8fxtmeuqmyjkq3"
     ],
     [
-        "1Gm3N3rkef6iMbx4voBzaxtXcmmiMTqZPhcuAepRzYUJQW4qRpEnHvMojzof42hjFRf8PE2jPde"
+        "tb1qkeuglpgmnex9tv3fr7htzfrh3rwrk23r52rx9halxzmv9fr85lwq0fwhmp"
     ],
     [
-        "2TAq2tuN6x6m233bpT7yqdYQPELdTDJn1eU"
+        "bcrt1qd0t2wrhl7s57z99rsyaekpq0dyjcQRSSmz80r4"
     ],
     [
-        "ntEtnnGhqPii4joABvBtSEJG6BxjT2tUZqE8PcVYgk3RHpgxgHDCQxNbLJf7ardf1dDk2oCQ7Cf"
+        "BC1QXLFDUCGX90T3E53PQCNKJ2PK25MSF3VLPMVY6T"
     ],
     [
-        "Ky1YjoZNgQ196HJV3HpdkecfhRBmRZdMJk89Hi5KGfpfPwS2bUbfd"
+        "tb1qmycg4zszgnk34vaurx3cu8wpvteg9h40yq6cp52gt26gjel03t3su3x3xu"
     ],
     [
-        "2A1q1YsMZowabbvta7kTy2Fd6qN4r5ZCeG3qLpvZBMzCixMUdkN2Y4dHB1wPsZAeVXUGD83MfRED"
+        "bcrt1q9hy58r4fnuxqzdqndpmq9pptc9nt2dw3rczf5e"
     ],
     [
-        "tc1qw508d6qejxtdg4y5r3zarvary0c5xw7kg3g4ty"
+        "BC1PA7682NAY6JQSLUWAJYTC0ERWTMW7A4RPWLNTUS32LCXWLHVKKKTQ2UL8CG"
     ],
     [
-        "bc1qw508d6qejxtdg4y5r3zarvary0c5xw7kv8f3t5"
+        "tb1z850dpxnwz2fzae5h2myatj4yvu6rq5xq"
     ],
     [
-        "BC13W508D6QEJXTDG4Y5R3ZARVARY0C5XW7KN40WF2"
+        "bcrt1sp525pzjsmpqvcrawjreww36e9keg876skjvpwt"
     ],
     [
-        "bc1rw5uspcuh"
+        "xcAvW5jurCpzSpLxBKEhCewCgwwuGhqJnC"
     ],
     [
-        "bc10w508d6qejxtdg4y5r3zarvary0c5xw7kw508d6qejxtdg4y5r3zarvary0c5xw7kw5rljs90"
+        "2Cvv8yp9kXbQt8EKh6Yma95yJ1uwYF9YKXuVhGJyu3dHGVsb2AVpTC62TFACZZ3KDNrALxR2CVNs"
     ],
     [
-        "BC1QR508D6QEJXTDG4Y5R3ZARVARYV98GJ9P"
+        "niUuL46hCuEVvkAzZKHvD746qbmLmzip9Pv3F6UZV14JxzEXBnTkVxCT4URapChJG6qAEgsZs6G"
     ],
     [
-        "tb1qrp33g0q5c5txsp9arysrx4k6zdkfs4nce4xj0gdcccefvpysxf3q0sL5k7"
+        "2UHHgGfiipzvB8Eumnmvq6SowvrMJimjT3NwwG1839XEiUfwtpSdkUrseNsQuagXv21ce7aZu6yo"
     ],
     [
-        "bc1zw508d6qejxtdg4y5r3zarvaryvqyzf3du"
+        "8u9djKu4u6o3bsgeR4BKNnLK3akpo64FYzDAmA9239wKeshgF97"
     ],
     [
-        "tb1qrp33g0q5c5txsp9arysrx4k6zdkfs4nce4xj0gdcccefvpysxf3pjxtptv"
+        "TC1QPAARXSLVMXHVRR0474LZXQYZWLGFZYPSFVL9E4"
     ],
     [
-        "bc1gmk9yu"
+        "bt1pakek0n2267t9yaksxaczgr2syhv9y3xkx0wnsdwchfa6xkmjtvuqg3kgyr"
+    ],
+    [
+        "tb13h83rtwq62udrhwpn87uely7cyxcjrj0azz6a4r3n9s87x5uj98ys6ufp83"
+    ],
+    [
+        "bcrt1rk5vw5qf2"
+    ],
+    [
+        "bc10d3rmtg62h747en5j6fju5g5qyvsransrkty6ghh96pu647wumctejlsngh9pf26cysrys2x2"
+    ],
+    [
+        "tb1qajuy2cdwqgmrzc7la85al5cwcq374tsp"
+    ],
+    [
+        "bcrt1q3udxvj6x20chqh723mn064mzz65yr56ef00xk8czvu3jnx04ydapzk02s5"
+    ],
+    [
+        "bc1qule2szwzyaq4qy0s3aa4mauucyqt6fewe"
+    ],
+    [
+        "tb1ql0qny5vg9gh5tyzke6dw36px5ulkrp24x53x0pl2t5lpwrtejw3s2seej2"
+    ],
+    [
+        "bcrt17CAPP7"
+    ],
+    [
+        "bc1qtvm6davyf725wfedc2d5mrgfewqgcrce8gjrpl"
+    ],
+    [
+        "tb1q5acjgtqrrw3an0dzavxxxzlex8k7aukjzjk9v2u4rmfdqxjphcyq7ge97e"
     ]
 ]
diff --git a/src/test/data/key_io_valid.json b/src/test/data/key_io_valid.json
index 8418a6002d..5dee44c04b 100644
--- a/src/test/data/key_io_valid.json
+++ b/src/test/data/key_io_valid.json
@@ -1,533 +1,610 @@
 [
     [
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-            "isPrivkey": true,
-            "chain": "regtest"
+            "chain": "regtest",
+            "isPrivkey": false
         }
     ],
     [
-        "cVM65tdYu1YK37tNoAyGoJTR13VBYFva1vg9FLuPAsJijGvG6NEA",
-        "e7b230133f1b5489843260236b06edca25f66adb1be455fbd38d4010d48faeef",
+        "2N3zGiwFku2vQjYnAqXv5Qu2ztfYRhh7tbF",
+        "a91475d56d75c88e704d6c72fbe84ac1505abf736b4087",
         {
-            "isCompressed": true,
-            "isPrivkey": true,
-            "chain": "test"
+            "chain": "regtest",
+            "isPrivkey": false
         }
     ],
     [
-        "1JwMWBVLtiqtscbaRHai4pqHokhFCbtoB4",
-        "76a914c4c1b72491ede1eedaca00618407ee0b772cad0d88ac",
+        "5JUHCgyxNSHg64wwju72eNsG6ajqo4Z2fHHw9iLDLfh69rSiL7w",
+        "5644d06d88855dacf3192a31df8f4acd8e4c155c52a86d2c1fa48303f5cff053",
         {
-            "isPrivkey": false,
-            "chain": "main"
+            "chain": "main",
+            "isCompressed": false,
+            "isPrivkey": true
         }
     ],
     [
-        "3QCzvfL4ZRvmJFiWWBVwxfdaNBT8EtxB5y",
-        "a914f6fe69bcb548a829cce4c57bf6fff8af3a5981f987",
+        "L2kZaexG69VSriMe9T2m1jkS86iPe3xNbjcdfakRC1PHe7ay78Ji",
+        "a50ee94aefcabf5a5d7c85be5b3844dee03c5604861dbfc77fe388c91e5a30f8",
         {
-            "isPrivkey": false,
-            "chain": "main"
+            "chain": "main",
+            "isCompressed": true,
+            "isPrivkey": true
         }
     ],
     [
-        "mizXiucXRCsEriQCHUkCqef9ph9qtPbZZ6",
-        "76a914261f83568a098a8638844bd7aeca039d5f2352c088ac",
+        "927JwT1ViCr5TD2ZX8CsMNhg17dXmou5xu4y2KiH54zD7i34UJq",
+        "4502a54c0026b0150281d41f40860d1e23870c63cdc32645bbed688f2ee41f64",
         {
-            "isPrivkey": false,
-            "chain": "test"
+            "chain": "test",
+            "isCompressed": false,
+            "isPrivkey": true
         }
     ],
     [
-        "2NEWDzHWwY5ZZp8CQWbB7ouNMLqCia6YRda",
-        "a914e930e1834a4d234702773951d627cce82fbb5d2e87",
+        "cTpGGNPVy2Eagawohbr4aGtRJzpLnjxGsGYh9DUcBM45f3KdKGF6",
+        "ba005a0cb39587aab00bd54c848b59e8adaed47403228567ddc739c2a344ff59",
         {
-            "isPrivkey": false,
-            "chain": "test"
+            "chain": "test",
+            "isCompressed": true,
+            "isPrivkey": true
         }
     ],
     [
-        "5KQmDryMNDcisTzRp3zEq9e4awRmJrEVU1j5vFRTKpRNYPqYrMg",
-        "d1fab7ab7385ad26872237f1eb9789aa25cc986bacc695e07ac571d6cdac8bc0",
+        "932PLCLA19yPNqV67qwHBSGjxi82LVzWBF7josL9ab4Q1kxgPGF",
+        "bd8677e076eb39770bf7e9f9e8d3f2cf257effab9b4c220fd3439ccfc208c984",
         {
+            "chain": "signet",
             "isCompressed": false,
-            "isPrivkey": true,
-            "chain": "main"
+            "isPrivkey": true
         }
     ],
     [
-        "L39Fy7AC2Hhj95gh3Yb2AU5YHh1mQSAHgpNixvm27poizcJyLtUi",
-        "b0bbede33ef254e8376aceb1510253fc3550efd0fcf84dcd0c9998b288f166b3",
+        "cViUpEy8URSsLjUvxwL7cEuNgCVqM7oKBzd1ZPbA4khcQsQJuj1j",
+        "f2b36ade8393e29dc71e52cb75ba1109ba210203cd7d0a5ae881ad6846516203",
         {
+            "chain": "signet",
             "isCompressed": true,
-            "isPrivkey": true,
-            "chain": "main"
+            "isPrivkey": true
         }
     ],
     [
-        "91cTVUcgydqyZLgaANpf1fvL55FH53QMm4BsnCADVNYuWuqdVys",
-        "037f4192c630f399d9271e26c575269b1d15be553ea1a7217f0cb8513cef41cb",
+        "92jddDjJCVDmJtgvBHQ9i58PMash8kwsYhRdNo22ea2MYPXdCBE",
+        "977bf8686f1bcad28f86c4c14afbd33215746bd19203647bf7ff9c6fddc9cc87",
         {
+            "chain": "regtest",
             "isCompressed": false,
-            "isPrivkey": true,
-            "chain": "test"
+            "isPrivkey": true
         }
     ],
     [
-        "cQspfSzsgLeiJGB2u8vrAiWpCU4MxUT6JseWo2SjXy4Qbzn2fwDw",
-        "6251e205e8ad508bab5596bee086ef16cd4b239e0cc0c5d7c4e6035441e7d5de",
+        "cVwAuMoUqRo399X7vXzuzQyPEvZJMXM8c82zHzRkFCxPCSGx8A6y",
+        "f93acbbce02b8cb9ddca3fad495441e324cc01eb640b0a7b4c9f0e31644c822a",
         {
+            "chain": "regtest",
             "isCompressed": true,
-            "isPrivkey": true,
-            "chain": "test"
+            "isPrivkey": true
         }
     ],
     [
-        "19dcawoKcZdQz365WpXWMhX6QCUpR9SY4r",
-        "76a9145eadaf9bb7121f0f192561a5a62f5e5f5421029288ac",
+        "bc1qz377zwe5awr68dnggengqx9vrjt05k98q3sw2n",
+        "0014147de13b34eb87a3b66846668018ac1c96fa58a7",
         {
+            "chain": "main",
             "isPrivkey": false,
-            "chain": "main"
+            "tryCaseFlip": true
         }
     ],
     [
-        "37Sp6Rv3y4kVd1nQ1JV5pfqXccHNyZm1x3",
-        "a9143f210e7277c899c3a155cc1c90f4106cbddeec6e87",
+        "bc1qkmhskpdzg8kdkfywhu09kswwn9qan9vnkrf6mk40jvnr06s6sz5ssf82ya",
+        "0020b6ef0b05a241ecdb248ebf1e5b41ce9941d99593b0d3addaaf932637ea1a80a9",
         {
+            "chain": "main",
             "isPrivkey": false,
-            "chain": "main"
+            "tryCaseFlip": true
         }
     ],
     [
-        "myoqcgYiehufrsnnkqdqbp69dddVDMopJu",
-        "76a914c8a3c2a09a298592c3e180f02487cd91ba3400b588ac",
+        "bc1ps8cndas60cntk8x79sg9f5e5jz7x050z8agyugln2ukkks23rryqpejzkc",
+        "512081f136f61a7e26bb1cde2c1054d33490bc67d1e23f504e23f3572d6b415118c8",
         {
+            "chain": "main",
             "isPrivkey": false,
-            "chain": "test"
+            "tryCaseFlip": true
         }
     ],
     [
-        "2N7FuwuUuoTBrDFdrAZ9KxBmtqMLxce9i1C",
-        "a91499b31df7c9068d1481b596578ddbb4d3bd90baeb87",
+        "bc1zn4tsczge9l",
+        "52029d57",
         {
+            "chain": "main",
             "isPrivkey": false,
-            "chain": "test"
+            "tryCaseFlip": true
         }
     ],
     [
-        "5KL6zEaMtPRXZKo1bbMq7JDjjo1bJuQcsgL33je3oY8uSJCR5b4",
-        "c7666842503db6dc6ea061f092cfb9c388448629a6fe868d068c42a488b478ae",
+        "tb1q6xw0wwd9n9d7ge87dryz4vm5vtahzhvz6yett3",
+        "0014d19cf739a5995be464fe68c82ab37462fb715d82",
         {
-            "isCompressed": false,
-            "isPrivkey": true,
-            "chain": "main"
+            "chain": "test",
+            "isPrivkey": false,
+            "tryCaseFlip": true
         }
     ],
     [
-        "KwV9KAfwbwt51veZWNscRTeZs9CKpojyu1MsPnaKTF5kz69H1UN2",
-        "07f0803fc5399e773555ab1e8939907e9badacc17ca129e67a2f5f2ff84351dd",
+        "tb1qwn9zq9fu5uk35ykpgsc7rz4uawy4yh0r5m5er26768h5ur50su3qj6evun",
+        "002074ca20153ca72d1a12c14431e18abceb89525de3a6e991ab5ed1ef4e0e8f8722",
         {
-            "isCompressed": true,
-            "isPrivkey": true,
-            "chain": "main"
+            "chain": "test",
+            "isPrivkey": false,
+            "tryCaseFlip": true
         }
     ],
     [
-        "93N87D6uxSBzwXvpokpzg8FFmfQPmvX4xHoWQe3pLdYpbiwT5YV",
-        "ea577acfb5d1d14d3b7b195c321566f12f87d2b77ea3a53f68df7ebf8604a801",
+        "tb1pmcdc5d8gr92rtemfsnhpeqanvs0nr82upn5dktxluz9n0qcv34lqxke0wq",
+        "5120de1b8a34e8195435e76984ee1c83b3641f319d5c0ce8db2cdfe08b37830c8d7e",
         {
-            "isCompressed": false,
-            "isPrivkey": true,
-            "chain": "test"
+            "chain": "test",
+            "isPrivkey": false,
+            "tryCaseFlip": true
         }
     ],
     [
-        "cMxXusSihaX58wpJ3tNuuUcZEQGt6DKJ1wEpxys88FFaQCYjku9h",
-        "0b3b34f0958d8a268193a9814da92c3e8b58b4a4378a542863e34ac289cd830c",
+        "tb1rgxjvtfzp0xczz6dlzqv8d5cmuykk4qkk",
+        "531041a4c5a44179b02169bf101876d31be1",
         {
-            "isCompressed": true,
-            "isPrivkey": true,
-            "chain": "test"
+            "chain": "test",
+            "isPrivkey": false,
+            "tryCaseFlip": true
         }
     ],
     [
-        "13p1ijLwsnrcuyqcTvJXkq2ASdXqcnEBLE",
-        "76a9141ed467017f043e91ed4c44b4e8dd674db211c4e688ac",
+        "tb1qa9dlyt6fydestul4y4wh72yshh044w32np8etk",
+        "0014e95bf22f49237305f3f5255d7f2890bddf5aba2a",
         {
+            "chain": "signet",
             "isPrivkey": false,
-            "chain": "main"
+            "tryCaseFlip": true
         }
     ],
     [
-        "3ALJH9Y951VCGcVZYAdpA3KchoP9McEj1G",
-        "a9145ece0cadddc415b1980f001785947120acdb36fc87",
+        "tb1qu4p26n0033720xm0rjgkds5ehdwf039k2fgv75um5krrvfhrrj7qckl9r2",
+        "0020e542ad4def8c7ca79b6f1c9166c299bb5c97c4b65250cf539ba5863626e31cbc",
         {
+            "chain": "signet",
             "isPrivkey": false,
-            "chain": "main"
+            "tryCaseFlip": true
         }
     ],
     [
-        "bc1qw508d6qejxtdg4y5r3zarvary0c5xw7kv8f3t4",
-        "0014751e76e8199196d454941c45d1b3a323f1433bd6",
+        "tb1pjyukm4n4flwd0ey3lrl06c9kalr60ggmlkcxq2rhhxmy4lvkmkpqexdzqy",
+        "512091396dd6754fdcd7e491f8fefd60b6efc7a7a11bfdb0602877b9b64afd96dd82",
         {
+            "chain": "signet",
             "isPrivkey": false,
-            "chain": "main",
             "tryCaseFlip": true
         }
     ],
     [
-        "bcrt1qw508d6qejxtdg4y5r3zarvary0c5xw7kygt080",
-        "0014751e76e8199196d454941c45d1b3a323f1433bd6",
+        "tb1r4k75s5syvewsvxufdc3xfhf4tw4u30alw39xny3dnxrl6hau7systymfdv",
+        "5320adbd485204665d061b896e2264dd355babc8bfbf744a69922d9987fd5fbcf409",
         {
+            "chain": "signet",
             "isPrivkey": false,
-            "chain": "regtest",
             "tryCaseFlip": true
         }
     ],
     [
-        "tb1qrp33g0q5c5txsp9arysrx4k6zdkfs4nce4xj0gdcccefvpysxf3q0sl5k7",
-        "00201863143c14c5166804bd19203356da136c985678cd4d27a1b8c6329604903262",
+        "bcrt1qnk3tdwwj47ppc4pqmxkjdusegedn9ru5gvccwa",
+        "00149da2b6b9d2af821c5420d9ad26f219465b328f94",
         {
+            "chain": "regtest",
             "isPrivkey": false,
-            "chain": "test",
             "tryCaseFlip": true
         }
     ],
     [
-        "bc1pw508d6qejxtdg4y5r3zarvary0c5xw7kw508d6qejxtdg4y5r3zarvary0c5xw7k7grplx",
-        "5128751e76e8199196d454941c45d1b3a323f1433bd6751e76e8199196d454941c45d1b3a323f1433bd6",
+        "bcrt1qz7prfshfkwsxuk72pt6mzr6uumq4qllxe4vmwqt89tat48d362yqlykk6a",
+        "0020178234c2e9b3a06e5bca0af5b10f5ce6c1507fe6cd59b701672afaba9db1d288",
         {
+            "chain": "regtest",
             "isPrivkey": false,
-            "chain": "main",
             "tryCaseFlip": true
         }
     ],
     [
-        "bc1sw50qa3jx3s",
-        "6002751e",
+        "bcrt1pumee3wj80xvyr7wjmj7zsk26x5pn095aegy862yhx6f2j9sgc9hq6cj4cm",
+        "5120e6f398ba47799841f9d2dcbc28595a350337969dca087d28973692a91608c16e",
         {
+            "chain": "regtest",
             "isPrivkey": false,
-            "chain": "main",
             "tryCaseFlip": true
         }
     ],
     [
-        "bc1zw508d6qejxtdg4y5r3zarvaryvg6kdaj",
-        "5210751e76e8199196d454941c45d1b3a323",
+        "bcrt1szqz8hj64d2hhc6nt65v09jxal66pgff2xpcp9kj648qkk8kjzxelsts4dktd799g47uase",
+        "602810047bcb556aaf7c6a6bd518f2c8ddfeb414252a307012da5aa9c16b1ed211b3f82e156d96df14a8",
         {
+            "chain": "regtest",
             "isPrivkey": false,
-            "chain": "main",
             "tryCaseFlip": true
         }
     ],
     [
-        "tb1qqqqqp399et2xygdj5xreqhjjvcmzhxw4aywxecjdzew6hylgvsesrxh6hy",
-        "0020000000c4a5cad46221b2a187905e5266362b99d5e91c6ce24d165dab93e86433",
+        "12agZTajtRE3STSchwWNWnrm467zzTQ916",
+        "76a9141156e00f70061e5faba8b71593a8c7554b47090c88ac",
+        {
+            "chain": "main",
+            "isPrivkey": false
+        }
+    ],
+    [
+        "3NXqB6iZiPYbKruNT3d9xNBTmtb73xMvvf",
+        "a914e49decc9e5d97e0547d3642f3a4795b13ae62bca87",
+        {
+            "chain": "main",
+            "isPrivkey": false
+        }
+    ],
+    [
+        "mjgt4BoCYxjzWvJFoh68x7cj5GeaKDYhyx",
+        "76a9142dc11fc7b8072f733f690ffb0591c00f4062295c88ac",
         {
-            "isPrivkey": false,
             "chain": "test",
-            "tryCaseFlip": true
+            "isPrivkey": false
         }
     ],
     [
-        "bcrt1qqqqqp399et2xygdj5xreqhjjvcmzhxw4aywxecjdzew6hylgvseswlauz7",
-        "0020000000c4a5cad46221b2a187905e5266362b99d5e91c6ce24d165dab93e86433",
+        "2NCT6FdQ5MxorHgnFxLeHyGwTGRdkHcrJDH",
+        "a914d2a8ec992b0894a0d9391ca5d9c45c388c41be7e87",
         {
-            "isPrivkey": false,
-            "chain": "regtest",
-            "tryCaseFlip": true
+            "chain": "test",
+            "isPrivkey": false
+        }
+    ],
+    [
+        "mpomiA7wqDnMcxaNLC23eBuXAb4U6H4ZqW",
+        "76a91465e75e340415ed297c58d6a14d3c17ceeaa17bbd88ac",
+        {
+            "chain": "signet",
+            "isPrivkey": false
+        }
+    ],
+    [
+        "2N1pGAA5uatbU2PKvMA9BnJmHcK6yHfMiZa",
+        "a9145e008b6cc232164570befc23d216060bf4ea793b87",
+        {
+            "chain": "signet",
+            "isPrivkey": false
         }
     ]
 ]
diff --git a/src/test/fuzz/bech32.cpp b/src/test/fuzz/bech32.cpp
index 95cd4b413f..ad3bf73af4 100644
--- a/src/test/fuzz/bech32.cpp
+++ b/src/test/fuzz/bech32.cpp
@@ -16,28 +16,28 @@
 FUZZ_TARGET(bech32)
 {
     const std::string random_string(buffer.begin(), buffer.end());
-    const std::pair<std::string, std::vector<uint8_t>> r1 = bech32::Decode(random_string);
-    if (r1.first.empty()) {
-        assert(r1.second.empty());
+    const auto r1 = bech32::Decode(random_string);
+    if (r1.hrp.empty()) {
+        assert(r1.encoding == bech32::Encoding::INVALID);
+        assert(r1.data.empty());
     } else {
-        const std::string& hrp = r1.first;
-        const std::vector<uint8_t>& data = r1.second;
-        const std::string reencoded = bech32::Encode(hrp, data);
+        assert(r1.encoding != bech32::Encoding::INVALID);
+        const std::string reencoded = bech32::Encode(r1.encoding, r1.hrp, r1.data);
         assert(CaseInsensitiveEqual(random_string, reencoded));
     }
 
     std::vector<unsigned char> input;
     ConvertBits<8, 5, true>([&](unsigned char c) { input.push_back(c); }, buffer.begin(), buffer.end());
-    const std::string encoded = bech32::Encode("bc", input);
-    assert(!encoded.empty());
 
-    const std::pair<std::string, std::vector<uint8_t>> r2 = bech32::Decode(encoded);
-    if (r2.first.empty()) {
-        assert(r2.second.empty());
-    } else {
-        const std::string& hrp = r2.first;
-        const std::vector<uint8_t>& data = r2.second;
-        assert(hrp == "bc");
-        assert(data == input);
+    if (input.size() + 3 + 6 <= 90) {
+        // If it's possible to encode input in Bech32(m) without exceeding the 90-character limit:
+        for (auto encoding : {bech32::Encoding::BECH32, bech32::Encoding::BECH32M}) {
+            const std::string encoded = bech32::Encode(encoding, "bc", input);
+            assert(!encoded.empty());
+            const auto r2 = bech32::Decode(encoded);
+            assert(r2.encoding == encoding);
+            assert(r2.hrp == "bc");
+            assert(r2.data == input);
+        }
     }
 }