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 0xeb74346589540b5fbad5b1e722c4c2a22a7336184dd64bc0163f25dfef1bf960. Chain 2 (Bitcoin): anchored in block 953780 (2026-06-15T12:02:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d4947b40-aaad-4b9d-b0a9-e53945a212dc.json and https://artists.proofprofile.net/proofs/artist/d4947b40-aaad-4b9d-b0a9-e53945a212dc.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 0xe7aecea11d09e526b876e4bb8a652382586f710c8c37d0a7ce38d311e514173c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/SEYOK2037634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c14c262dd1f9cd3a53012792f8ef2286b1c64882df8e55c717cd041cfd134e. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/SEYOK2037636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5173c48fe17f376b5f8aa31e74d422d6220c7e83fc96af7200ff84c54d6088a. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/SEYOK2026032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562674f3f6cb39c382b297ed391e385864c0b5aee7efe0edef17815de0ad2625. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/SEYOK2026033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12f14ed2217f85de0964909901438d6c9629fa9cb83e0e830bb8b0eb1641b8b1. 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/SEYOK2026034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ddf7ccc883be599e028426a0a9ed3080d86b920dd5ca648b8faebbfe777411. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/SEYOK2026035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16fed1a848fbf2d4798372cd37c30430c9d135aa6ee13fbe2cbf50e6e1ce576d. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/SEYOK2026036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0978fbc9d234168c3a730a89b044069b65705238ea8ff2119b0a1bcf7a3c96f2. 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/SEYOK2026037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebbabaa85d13b1dedf5d951ea0d8e39c3c6e610391790abf21252380f2b251e5. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:50:56Z), 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/SEYOK2026039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1127fab63e66c9f0a40618a53ee3cc3c78cecefb9c76111359858f6117267ae6. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/SEYOK2521285.