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 0xc58e9a7467cc640ca90c6e63abfbe338dc4848ae0d314280eba796a161179b0b. Chain 2 (Bitcoin): anchored in block 954742 (2026-06-21T20:46:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fd719e35-16be-4523-90a0-e83b37795597.json and https://artists.proofprofile.net/proofs/artist/fd719e35-16be-4523-90a0-e83b37795597.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 0x3164a380c115ce24bd8b3a1d56684e357bd0be7f7dccf7bf4b5c73feed59c79d. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/FRX872594867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x042d4c9a529f5c7c5733e622a4b1409bc9650ed5c83db6286119121fbc8b7c0f. 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/DGA052524181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf4e76e335fdb8844fa56b3811c1ef1ac80ca54689792e440b2731f5ae1037e. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DGA052547180.
Ez-Buma / Çukek / Firyabam (Live, Cover)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf38fa62b25283062bbb1929b2288cd963dbbf0f033cee9e96e43c238f179a64. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:16:05Z), 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/DGA062511902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc293b6a58e9a751b6dbaae8c99b743b5f1b2fc72e7b6ff1485290998cd097359. 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/DGA062511863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b1fdea422afaebba3c025e7a7bfa720f3b3f094666a613d4808826b75ffe59d. 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/DGA062542461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4491951d09856fdb2f23447dba344d142f9d5ba2c9538ccac6d8c8449e68e4cd. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:41:57Z), 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/DGA062560373.