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 0x7c2ec6f10d2b4fd167c691ba968337433432208d497114da1b2541d8df7f8d5d. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c948e3c8-895d-461d-9042-aec2c487f9a3.json and https://artists.proofprofile.net/proofs/artist/c948e3c8-895d-461d-9042-aec2c487f9a3.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 0x62ada76f7242dc92334b58283fcc5aa0f750602c8c5d39def682113a121316fd. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:44:38Z), 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/FR59R1830014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba77d4e36c33a0711fe6a177194e306ab87363dee379ee299d0fcaf896a92477. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:07:02Z), 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/INS232206956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39da9fbc3b0987611dc519d56e014623e657b490424319e07bd4a41b0f0689eb. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/INS232207671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a5dbb9ff90ef5db4de99a5508cfb28167f9a7f049181b6c9921a75ec9fb23c5. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/INS232500239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed9abc435dcccdeefcd6d0510f5a2d212395d0af409593d8bda0bed788ab1f8. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/INS232500483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a59fb9289231f370bbb3579bbe745951711ce6598080e415bb640126cff04e2. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/INS232500768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedd1a1b0ffd8c4dd81f2e7af7fe0a3b0b43ba9890b6476894d3418004cdde9d2. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/INGE22400129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x435dc3a7268539ce3532f63fdab4f24e9a9ee469604a9e59c1182e6980ceafa4. 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/INS232204017.