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 0xf9d8d958ff67dc3c8da59362c280919786d695914cca9ba284fae9496bf4ae97. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eca457ac-eac7-4575-93d2-06d251b3813b.json and https://artists.proofprofile.net/proofs/artist/eca457ac-eac7-4575-93d2-06d251b3813b.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 0x7c61af3884c0936e097f1bc47f9e94a5e504a3b937a8ac615c09db4a4bdcf065. Chain 2 (Bitcoin): anchored in block 957579 (2026-07-11T14:35:38Z), 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/GBKPL1521207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ebb3f99a5ef8f14efab6002d5312644ebcb1d4a34ddaef0ee3386696e697e5a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GBKPL2022738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa61546e95563ac32809a28f4ad408241e310d960b99d0c27e442ae5f10fed1. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/GBKPL2086794.
Wait for Me (Bangsy's East Coast Tribute Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x510ebc4a7fcfbd229c851eda43905da4faac0dd4aced94e1f2f99ef83a5a70c8. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/GBKPL2086789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa61546e95563ac32809a28f4ad408241e310d960b99d0c27e442ae5f10fed1. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:47:58Z), 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/GBKPL2086794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x708cf5e264601dffabdef71490ea469842db4dc956e64899ace7dd441dc517db. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBKPL2086787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x510ebc4a7fcfbd229c851eda43905da4faac0dd4aced94e1f2f99ef83a5a70c8. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/GBKPL2086789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa61546e95563ac32809a28f4ad408241e310d960b99d0c27e442ae5f10fed1. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/GBKPL2086794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x708cf5e264601dffabdef71490ea469842db4dc956e64899ace7dd441dc517db. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GBKPL2086787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87c0d5c372b6faa2832e2d1c2d32bec571779009c9d5e787037b3d6ce0f21f2f. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QM4TW2542585.