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 0x6ffe1601c11b18bd5ab352d85cf3dd32060d0512fafe23bfc74c8a8696b15d0e. 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/a6996770-0b38-4109-a5e1-973757576d26.json and https://artists.proofprofile.net/proofs/artist/a6996770-0b38-4109-a5e1-973757576d26.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 0x4717e8b807437a56682b571263279a5e79b57a4bf9aab690d0e2bbcf60937c17. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QT3F42408525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x867e4846d89a0f9524f8d609572b005fb764896ad1aafda3f6eca7cfa82e005a. 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/QZFZ22515027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa19306ce520ded1739122599a21115375e7c16d1d6e780b5051d49c75168ce75. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/QZDA62554791.
I Still Haven't Found What I'm Looking For (Modern Country)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bae0918bcd809e595358312c28daae42f657f9507a829a3f3d6456fc14b2003. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:38:53Z), 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/QZZ7V2431950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c7ac7e87762d44a49045bbe6b7a0bb55430b0cf023a8d2decd4c121e83b884. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:34:19Z), 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/QZMEM2518333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8340b5e6dccd731e429dd95a5e0c4bddd2e1c03851fe8456f4308ccd531e9d46. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZNWR2556243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31718ffa85d350414162cd942d4a38d1a276885e6585cda22130d2f9c161bc10. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/NL8RL2549597.