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 0x51d238794e29e2185f51dbd63c532c53f894fcdf39b11b57f355a2cde627902e. 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/8373f8d0-97a6-44f7-864a-27c331954edb.json and https://artists.proofprofile.net/proofs/artist/8373f8d0-97a6-44f7-864a-27c331954edb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0xfa91ad8b5f5599129d0d25151af861c43050ca35105565cf31002d4255b5915c. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QM6MZ1785822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca219347c83c900ddf474fcc9b5007a7a5b1028cda55e545e43b5819dea1bc6d. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QM6MZ1785826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96ab1b9a1b4a38e787442fb324cc509b802448a2fbd58adc6378846b143fb42. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/QM7281567405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8843cc468d75956865c26bda2f47cfc05afbdd44957e7272c5589dbd90e42183. 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/QM7281567411.
Con Tu Puño y Con Tu Razón (Versión Acústica)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x068b0bcabf159b684d7785b4378f8793793f5bcf4954b5c8772af1db03cdd237. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USL4R2045124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb95f329b88f64ee03bcd1f7aebf4ac1d6300fd2d898fd8cf06e493d1b67b589b. Chain 2 (Bitcoin): anchored in block 958647 (2026-07-19T02:36:14Z), 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/USL4R2148484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x070f3419cb7f7290b70306f1571a23bbf70c83b968a31ba5c683a723a1cf63d9. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:40:34Z), 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/USHM22252722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x745af91d20d290a585a1bf8062d6e4800fbde5e1f59ad837d66d6d1f2f8c6db3. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QM7281567416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafa55a2ffd0ecec3925b2eadd796f9a050c908d4f807fa29872025b807642d01. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:56:14Z), 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/QM6MZ1721265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3936831e310f12187b6cbd794c17db5858c62e649b373c1de39e1920763c7da1. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QM6MZ1721267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7121176b7da769d27e538bf508046346136dae6a9bb019843a334c8e33dc89d2. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QM6P41793967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a32bb6b553c46b71bf122e48d75fbe02b34455af82e748d3d6c2776dc6d5962. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QM6P41793969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf98cbfff4334b4aef4bb7b71586806e007a4c82c57e16231342d79c0574da601. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T11:05:11Z), 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/QM4TX1854221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b1f337a12c5f4881aa00ea101deded666ae6a633971f04e154df7f6d5cf4d2b. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GBLFP2304166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c8be0a3a50e5edbb95cbc0f477f9ed3d4bdb611e2f6eafcab9e2461223fa624. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/GBLFP2337425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e83cbaf70875e7e7132b88ed332702a173fd9b56042fb36d3f8e0f9fa2d8180. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/GBMA22328181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e5dc716551b470e56b604f1986997a94621d939ec0ae40cd715aa97e8a0ef6. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GX53U2441503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd018382d51fdf23b50fa6951aeb412ba6f486e6eea82bb53bd45fd56bec949. 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/GX53U2441504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c43c55432266793a5efe4ae6801b436f4509e02910832b45614f2d434a0c3b. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:32:51Z), 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/GBMA22352930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a54d074ecbe2b4a842255443ebb0a2a51d42d82609ece15ded0d05839eaaf0b. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/GX53U2441505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb06aaca5ce139b9db9003d5c6613c17bb15bfad80469a36e67cee94411a61b2c. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/GX53U2547318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c6674433ef22e257bb1a730f553aa1df63fb57e4f6809afb5d4a7882e661acb. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/GXHG92508301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5abc2b4f66a0d34fec0188998cd165743204d439a16770f1c077b1aaa040f1e2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US6R21372016.