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 0x1a18f2252f5a0b076e01cec0092e2ea5840757418a3edc0521a127ee716c7937. 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/d06bf40e-5449-4362-90a9-437623e35d1a.json and https://artists.proofprofile.net/proofs/artist/d06bf40e-5449-4362-90a9-437623e35d1a.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 0x7ab916acd9aab92e3fa91044c7c5ac9b379e62e0b393e233fdf265aa40816ba6. 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/QZMEP2045802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f12e2a345737150c3ff00290c7b6e718f8a9ab18cefbf5e47d87ead8f6cad9c. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/GBARL2101577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x373f6957f5f154421e7e256ca398a962f9ba92924bf622d69b694bbf8e67e0eb. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:03:02Z), 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/GBARL2101891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19cf1c1d766d3c592811a6c192fcbd0591628ef662f0caa361762b9cfd33ea91. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/GBARL2101893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1559036a86b5b3e096f708edbaf254c658df563c02bd30031941998d7af765d5. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/SGB502218442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97178539975951aa22a2a7decd5afe2eec74c943ef7a7f5774f215789a497bbf. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZNWX2221380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x359a8ffebfeb34825ed654629f6f681971f8372668a0bc93f199a0f28d5ca28c. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:07:18Z), 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/QZTB82242031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26a4090850e9611808d7845f53c8f7def2418311ce33fbed22300bb7bce53793. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZDA72343659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6982bab182427764611c5af8ef14ade3b3c9481c4b79bb6e37c3894c337c38fb. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:58:02Z), 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/QZES82326676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f091d34946bee4fe856196a503785ea5aa38a64b5a0545596c3cb6e8ec9a1b. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZHNC2342081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x889b1a06e0f1e4b6e1ba1e49c18b338991d59feb697aa885b5ff1e7ecc968c76. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:26:13Z), 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/QZMEN2404952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99c3848f6879ac91dbe70fe021ac8695792ace3b05dc1fac249872371f9db955. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/QZMEN2405496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b9476d4e8db8a19ddefb164dd41a03075a2e0dcaeeb5648f8e9ec3154790ff. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QZMEN2405500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee3dca55a47742f2f27bdef4be5669689ecaac0bbbeb9a8971e6833ac2287cb. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:37:41Z), 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/QM4TW2567784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d1d604478ccc186c0a46b0a0c4db5d306cd953397e5dbe497eabd8e95da3ff. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QM4TW2582800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb38589144fd93c8472917186798fd6eb993eca7bea34331ef845e95d3c5273af. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QM4TW2559168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c741109d33e63c46564207dec87eba2dfb5811f3bb87be3056754245a225f4. 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/USA2P2345383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c741109d33e63c46564207dec87eba2dfb5811f3bb87be3056754245a225f4. 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/USA2P2345383.