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 0x5dba041c5cad37d2486eb4ee39c307ef4a93397dfd51e733297757edf77af3f5. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dfae885a-7b99-4cc6-9905-d74fe1c5f617.json and https://artists.proofprofile.net/proofs/artist/dfae885a-7b99-4cc6-9905-d74fe1c5f617.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 0x983e8695494780a4ddbd395365f23efc46952c4e6ff91b834dab6f92cd3599ec. 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/DEXN82524317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a69024b6fd81f74b88126c6c5c3b49a8d3a735c3bd1d0fd51c47a961db37293. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/DEXN82524318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ccb3d5966349058333f8b2debc7ee60192ad05670c4aac404ed32a1df933bc1. 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/DEXN82524319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa12eb5bbf7446d1354bd40757306d4313244db81365714cd7d4b85edb77e4a93. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DEXN82524320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba20aaf1c1f7c1abf87f829cffdf93bf4ee04d0320af51a639cd608c2b5c8f9. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEXN82524321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca415ab9faef5be8cc17929c8c31f12576acaee5af5c7e4ab6f29084354c8bcb. 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/DEXN82524322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe2bdf27275ff5d4a2187813fe8f9cd0e948df1ac74f15ab95422284d0ce35f. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/DEXN82524323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x826de143d18ddc0e76d363d6791487464f2df98d32ac1340fbbf93235a171eb0. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/DEXN82524324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe80a3f3dd0f26c3bae22ffa1fefa5d8b4c61fe03c741f21aa185208a3abfa600. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:03:40Z), 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/DEXN82524325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49fc39a600e3c1d64aec8c1161f6ec8f3c60f09d2cef6bfe7767ec2e429bf899. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/DEXN92529814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x593ecefdb0fc1520f720990de3e70634dc29487c5365ae1e83c3306f97ef84ce. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEXN92529815.