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 0xb521bd4db48eb29b2216712321c9a76d3943f259b346e9fd5cdd522786c9ce47. 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/5e835660-4db4-4e30-8288-f02e1be037c6.json and https://artists.proofprofile.net/proofs/artist/5e835660-4db4-4e30-8288-f02e1be037c6.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 0xb12a3945b9fd37cf952d120f70e5d3c66591c6268dea844bbe0d20c833158d41. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FRX282347409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9608ea6eeedf76fa312301cdb248a8898ee633aed0c5b21caefa3d15b23c27e4. 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/DGA062442571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8644c86399abd6a65d4180bc4b5d8b63f134af2c6a4b322bd55ca34f2ad42dbb. 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/FRX282446716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ef5323a1c9f02100d6bb0ae74706e300d4ede2fcfd5e5e967ae00207f656cbb. 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/FRX452478317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5620a431c43b13319a818411ef84394d8ad0c63c2b1c9801feee6f110cd3f6b4. 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/DGA0Q2366393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed1d464737f1bd482ed323eab072bad8c930768af275292b7f5bacbce2429864. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DGA0H2316477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f384117e854533f4ba3b1a4d084c76dcb11d61f4ac6a62fbe1b9d639597de84. 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/DGA0M2340798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce94002a74b6e96f939b298a86411c0f7db2f02015ee240c07921c97b132b58. 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/DGA0R2326922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2e7cf4189dd40d59f7a97f4bf63f4c934e4b6c650ece4c821bff9156cfcd9b. 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/DGA092393951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91efb32f5174da257b6faf68589a967fad8edfa558f25940e013f348e6e10116. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DGA072362163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee425e18dd40745d1a853a40894d1c496284f8cc4963dad81944d9193fec021. 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/FR96X2345957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856de3dce46b135161e0178c773b43b7de4d9c29d793dba05ae23357c83df58b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR96X2345959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d72520970d966f41a62d01c4df55956f0e415f68da248087dd85d3059ea3e2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/HKG731766616.