1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ac8de7e87ff9bc7c0e83f7a10374fee1aecf94cfad6bdd07def8838f3cbd4a. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0c7deb39-5861-4743-8530-1f2c332ae3f2.json and https://artists.proofprofile.net/proofs/artist/0c7deb39-5861-4743-8530-1f2c332ae3f2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
바흐 인벤션 15곡 Bach Invention 15 Songs BWV 772 ~ 786
쇼팽 에튀드 Op.10 전곡 Chopin Etude Op.10 No.1 ~ 12
쇼팽 에튀드 Op.10 - 3번 (이별의 곡) Chopin Etude Op.10 No.3 Chopin Etude Op.10 No.3 (Tristesse)
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf54342b4989e41892ca8ffc97153a8e6fe7064df6d67d2c5310ee264bd03525e. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRB921920611.
쇼팽 에튀드 Op.10 - 4번 (추격) Chopin Etude Op.10 No.4 Chopin Etude Op.10 No.4 (Torrent)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21de0fb6709ca5e7a28779c52379030b2338895b3d7a4811e53dcea81678087d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRB921920612.
쇼팽 에튀드 Op.10 - 12번 (혁명) Chopin Etude Op.10 No.12 Chopin Etude Op.10 No.12 (Revolutionary)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ab47de6f69e4031e0626fdafb8c7356e2338c02cabb7a6564ba148fed1d4c6. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRB921920620.
쇼팽 에튀드 Op.25 전곡 Chopin Etude Op.25 No.1 ~ 12
쇼팽 에튀드 Op.25 - 1번 (에올리안 하프) Chopin Etude Op.25 No.1 Chopin Etude Op.25 No.1 (Aeolian Harp)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafb25c106f071681aca4f0e1d1e955fa44bffe767b8cd11368efea23bbea8d69. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRB921921633.
쇼팽 에튀드 Op.25 - 9번 (나비) Chopin Etude Op.25 No.9 Chopin Etude Op.25 No.9 (Butterfly)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc99e721783f1c85e13d8834b7dc59b256f183bf45f328f0bb4bc28da96082f99. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRB921921641.
커피에서 음악으로 (피아노 10곡) 제1화 - 추억 From coffee to music (Piano 10 Songs) Episode 1 - Memories
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f5257e20d2731b5860a05753ca58370669e59da5555b536ae774e7ee7f50782. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRB921924157.
에릭사티 - 짐노페디 1번 Erik Satie - Gymnopedie No.1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdde7e40d251bfedb12af52bb95981b102fd4ff3527ae070c1f5e563b685bde60. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:21:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRB921924159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5524f9776a42d8008bf4cf1d0dfd082c2183484d6ae55302d26c643b2353edce. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRB921924161.
베토벤 - 비창 2악장 Beethoven Sonata No.8 in C Minor, Op.13 (Pathétique) - 2nd
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebab1dce55ca8788fb300d1b048b5fe1734c5cab257c733a60027a10c2a1e781. Chain 2 (Bitcoin): anchored in block 958572 (2026-07-18T15:47:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRB921924162.
슈만 - 트로이메라이 Schumann Kinderszenen Op.15 No.7 (Träumerei)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5732a91a201c943806580822b00f6382739fb414f1a37deeac1e8e378f61a3c0. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRB921924164.
쇼팽 - 왈츠 Op.64 - 2번 Chopin - Waltz Op.64 No.2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20a26dceb5483349feaa27a3b2bf975e4331aac4986a28a8a5576f99a9b42557. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRB921924165.
커피에서 음악으로 (피아노 10곡) 제2화 - 기쁨 From coffee to music (Piano 10 Songs) Episode 2 - Joy
쇼팽 - 야상곡 (Chopin - Nocturne Op.9 No.2 In E Flat Major)
쇼팽 - 빗방울 전주곡 (Chopin - Prelude No.15 Op.28 in D flat Major (Raindrop))
슈만 - 트로이메라이 (Schumann - Kinderszenen Op.15 No.7 (Traumerei))
슈만 - 트로이메라이 Schumann - Traumerei Schumann - Kinderszenen Op.15 No.7 (Traumerei)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce163b9b8131a7178733ca62b228f59164b4b9dc0def70d8e5e08b0c37a91594. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRB921926255.
모차르트 - 작은별 변주곡 (Mozart - 12 Variations on (Ah vous dirai-je, Maman) K.265)
드뷔시 - 아라베스크 1번 (Debussy - Arabesque No.1)
베토벤 - 비창 2악장 (Beethoven Sonata No.8 in C Minor, Op.13 (Pathetique) - 2nd Adagio cantabile)
베토벤 - 비창 2악장 Beethoven Sonata No.8 Op.13 - 2nd Beethoven Sonata No.8 in C Minor, Op.13 (Pathetique) - 2nd Adagio cantabile
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3535f8cca001d75f818320d623bf6d43c19757405d07fd294a00d2b3221b0a4b. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRB921930048.
에릭사티 - 짐노페디 1번 (Erik Satie - Gymnopedie No.1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x583acbb368a8452032a5979de298b37acbcd65cae28f04f342322a7d02ae972c. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRB921930583.
모차르트 - 피아노 소나타 16번 1악장 (Mozart Piano Sonata in C major No.16 K.545 - 1st Allegro)
쇼팽 - 강아지 왈츠 Op.64 - 1번 (Chopin Waltz Op.64 No.1 (Minute Waltz)) Mozart Piano Sonata in C major No.16 K.545 - 1st Allegro
베토벤 피아노 소나타 - 8번 (비창) Beethoven Piano Sonata No.8 Op.13 (Pathetique) Beethoven Piano Sonata - No.8 in C Minor, Op.13 (Pathetique)
베토벤 피아노 소나타 - 14번 (월광) Beethoven Piano Sonata No.14 Op.27 (Moonlight) Beethoven Piano Sonata No.14 in C Sharp Minor, Op.27 (Moonlight)
From coffee to music Episode 3 - Sadness
Isaac Albeniz Barcarolle Catalane Op. 23
Mozart - Symphony No. 1 in E flat, K. 16 - 2. Andante
Burgmuller - 25 Etudes Faciles et Progressives, Op.100
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x011c0e30e7f707b9428fc64081e9465c5105545a0d1c307da64b0ac37107a64b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRB920900204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6482dd9e8888426266b2217869067064581c7b66bdb82323e84b3263914b6d14. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRB920900207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x776ae4d8b85fe5a651ba1a5c4a451a4c40747dcc31116f87b05e2e4c2584280c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRB920900214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2159a006fc867bf9a51f88535730a73af9c85fbfeba0398d2468ad87b8a4731. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRB920900203.
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1e5d1d3d4a03bf7887d13300c9d6751d30099a669b510f3c0e215d2a56030e5. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRB920900205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x040e843a72f2399273ac2116c72d9bf078abd9b78cd2e5dff2375ee496d2b80e. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRB920900206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3bc41e180e16b8ee192733f62f5ec95439797b85f1c9ee06ed5e9a5bbc9593a. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRB920900208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x251c0e32f324c01b61f28a07b19271eb3c21df37cdb0bc6cce6475da1ad3d451. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRB920900210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa21b69a1e70ede869add510ccd5eece3b8ad6a1a5a4ed1057de7c516d584d683. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRB920900211.
Burgmuller Op.100 No.11 - La bergeronette
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb66fdbe5ae554067ac736a138a207dba65a619f19273f9173b78b6aefe73fa27. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRB920900213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x750f9d15f435779fa9741f32232a6bd5777bc0521e7124318d808877d9aa1c13. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRB920900217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b45498eccf6b7b76d91cb6765948ff3ce16ea4d50169b36165eb86f3a7b173. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRB920900218.