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 0x13380f9e87a2d9d55fd948688b61f2325573f7142e1e5cad506ac9caaa843fc4. 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/db8add9b-d313-4815-9414-c9235547d650.json and https://artists.proofprofile.net/proofs/artist/db8add9b-d313-4815-9414-c9235547d650.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 0x870397bebc03fa65149a54decd8bf4730e8fb96ce73feb44a8e0aedc142b5ab6. 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/ESUM72500966.
No es más feliz aquel que tiene - Fandangos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25868ff09652499519e73c2c858cbbf5a53e8a7be86562c74f81617e1e484480. 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/ESUM72500991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x870397bebc03fa65149a54decd8bf4730e8fb96ce73feb44a8e0aedc142b5ab6. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/ESUM72500966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f69a65f37b5f6547df66fa68538c2178804c13dea3c4f19906569defdc9940. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/ESUM72500838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ed3ec53d9b056db0c52207095fbe3de576be53a2cf3a0c448f13dfeabd371e7. 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/ESUM72500992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5171257a5e5af30d33aebadf64e452b4f36524d50b8ababe911cfda16559980. 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/ESUM72500993.
Con la sonrisa en los labios - Fandangos y bulerías al golpe
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86f2ba466eb00017a46c89b2b4147f2b312bd7d40d94b0589908820d2185580a. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/ESUM72500994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa49721386bc451281ec495431fd83118ca2a8b650f9803f27dfa864966ee17. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/ESUM72500995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e79fcf6eb65541ab6cdc4a107389ff08c9690eeeffe9e47b4081cd5e538034. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/ESUM72500996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf68298d3ea77f5183982708b4f9db5f5e0334d7afb80f2dbcc2b94442eb85587. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/ESUM72500997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba7885ce4ec2f51c065a252fe5e13498bf0377d38f426c8e5dc4aa5330dd83a. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T16:22:49Z), 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/ESUM72500998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4439d271282bcfc1b74bf770b8cb81dc320f62e56044a0bd54acfc1be9ca095. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QMDA62402451.