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 0x276ea491038d5bc20e79abf8da99ab2751a9e754d68d3efa58e15bcf97e9ab75. 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/07140e74-9a15-4116-971f-87f652cd1bf7.json and https://artists.proofprofile.net/proofs/artist/07140e74-9a15-4116-971f-87f652cd1bf7.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 0xfb96085112f58a7390e3208e3f2a01f99f8d992bf58dd676f3d3dfff34d31d1e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DKM011900101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c1604503bfc1ca31d8165d75ad9bbb6aae99ed6493a9cd8c905e5b758cf083. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DKM011900102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76e936e8bcaa2b323994e57f7994be19589c82b31089dd84fbde33f489fe83c6. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DKM011900103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc3e7b93ac4b5e70267c4ab509b3ca0abcc336b1ffe5985f6f052440487e8ede. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DKM011800102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabec676e172d7cc5ec1336a2003b74cee925f58a8fef7cce7f2739a8986badea. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DKM011900104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a95c3942775fd2d958e13ccb3569d5e7ed03116275885da7bcb050de24d78e. 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/DKM011900105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d7a1feeb48113f8684e06b4dc215976ec5c7a37c01c48a9a2014941ce639f1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DKM011900106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f528baa9b255071b877d395e27b63868ddb17cfd25b26364f83e443092a7d3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DKM011900107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c737fcaf13ee01114f097ed1d581e4a2d3454e70b52df847080ab4a89ab1ce8. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DKM011900108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d1b37efe1c6d58f4ff1d00cafc3cdbc449c73118622f991d210d1cbd1ffe28. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DKM011900109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe57258bec04a7a13b86ac08355e7a3592bb5e9aa1f81bac4eb3b3ae09d21f98e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DKM011900110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe999b0617f577fce5b010a1653a64619a4a82cdf7fb2988f3c9d2bd8e22a57. 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/DKM011900111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f9f82a6d7a3493106afdad08b8cd9963f02ba8e2cd50e81798bbd97ab33902a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DKM011800201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fdcae6dc6c412e44e3a269608cda2a289872153e7a8e79e1833e338b78c1783. 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/DKM011800202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb04765216ffacf5f5dd00ad6be9948a291597dc99eaf63c144bf24b4c9c2dacd. 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/DKM011800203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5871f825b4d9c7c1e9ec4ad6173d79dcf0409f4807321f4f2756e41847e3750d. 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/DKM011800204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb49ff0aafb857179e09ec5a7650b4bf09c8058dbbe16a95cae35f457d689242. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DKM011800205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x682566e55d622b38fb0000693114cdf6650a12867c25d1017e3e15117a201983. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DKM011800103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010de96c582f83636539ebc2ad5c5af0fc8445e33c483211d5a9db44d80d5e5a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DKM011800206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x890a650e3e6e3a63ce1d1cd3878651bd356ab6c299174af109d740f6a5f4c9da. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DKM012400101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3777838e32717df0422cb3d6d32f8a71367c22e6bd7ed189d91769fcde86ca9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DKM012300201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a84447a4db1f9a5a87ffff97354d28ea90379540150010f0c805a09bdfa9610. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DKM012300101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x904a13b81f9ea58cab8e7c145c06e8bb9811a8104aaabea97339af69130567ee. 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/DKM012200301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda59ba97c2805eb9ae07c4c13fc025f97ad4b2c3c8b58562849af72272784bab. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DKM012200201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3d9ccc346fb2f76493e7af382ac8c6527211afaceb68de8850644b54508339. 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/DKM012200101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x332c0b2333bfbbffdcc56021306285166f283e8ca26ab6f3031838ccaa26215a. 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/DKM012100201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d35a583977afa659a7174e7877c14601924e103f89c26c3175e3c43573d1621. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DKM012100101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b97adef4ed8d406314a7a7d97026b001a55e86eb5a52b2997d08100a77a60cc. 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/DKM012000301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e24616917beaf41251ba5843ccc4c0684c9643f681913e9f76e3ca804568e6. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DKM012000201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe43f86501716aada085140b43e3afeaf73ca09864fe968aaf3f790e5f81d5277. 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/DKM012000101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x920b6056744e1bb13bea3ab4cb4dfc2b6eb4bc900bd0e8114a378d3c13a7ab0d. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DKM011800301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c22977a44250c3e520beb922f7f341b8c8e55c060351a8e7378616fa8d685d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DKM012400201.