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 0xa62ad15812de808213ecb28e34b21b9947d546406498f1018a43dbb869c265ba. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d342ce87-afa7-4591-9c7c-f2d3386e94d8.json and https://artists.proofprofile.net/proofs/artist/d342ce87-afa7-4591-9c7c-f2d3386e94d8.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 0x2d3493cee550dfe055a3002eea44bc61d9ce51ab78baa3a00b7812bb52e04a67. 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/GX3Q92360746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5267d0aa283860a0d4b0359fbdd691b116da33db4bb36428f02a68ea18e47f87. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GX3Q92358628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af33d20fc2d79e7cd8d7501fe867430da007055b7b88cdeb759cdf21f1fc349. 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/UKXN22256662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddaca62a5120c945092937aa97215cc1b4067d0b2bdd0da2bf051b7b22d6de05. 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/UKXN22222905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf0d24b2ca7348c387cd16f386cecac3277f5ccd5e9b7ce32ad7ffab0b6ba5c5. 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/GBLFP2252019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb93b41002c530395fab991fe438c5a9a64f4cd26825714629ae1f03e1063584a. 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/GBLFP2211860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf243a05eb9a329ff32e15d6d00fafcc06484373d32fc8a179ae0c2308970da5. 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/GX3Q92036800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f9a25e2ce3b1bbd5d8ff1294f2b2613eabc8d386839331c3d983287428949f. 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/UKXN22101644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc3a4e24d772289a52d501601cbfc09e885e86ab709f2db6c1833c09b577db32. 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/UKXN21954456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd225aa073435baee10948538e5dd5df1af60973214961e5b9ead0b055672685e. 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/UKXN22033168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5fdb0e5644a316347bd1e6f90d838503086e10375dfb8a6bec1a8a105cbcd87. 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/GBMA22083690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x497b60913ed968888d65e7ebcb2e325c61bb272eca341f92fe0f713bcab6970d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBLFP1928657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17322e186fafbf5f2d314c12e56fea4b22a624f738995051e9fdcb1de1085a54. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBMA21945946.