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 0x20f9806981b92cda3115c2ef10482479903a8b33cb8036996583589636386b56. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f8af3070-5f34-4a5e-b9c2-85f623900aa7.json and https://artists.proofprofile.net/proofs/artist/f8af3070-5f34-4a5e-b9c2-85f623900aa7.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 0x4b8bf52b1c5f12d3e5d7f6b7a223cbf11869b0595ce05550e510ff5e9ebffd9f. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T03:07:41Z), 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/GRW019000007.
Βόλτα Με Κλεμμένο Αμάξι (Έλα Και Φύγαμε)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad7f66a590248cde04eb4926c2401284813c32a5504005434d880ce981e73d74. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/GRW018800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d87f7319b3404c5e258b00d76e74f8c8d8b273816ddb6847f0acb287ba0b18. 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/GRW018900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b923dd040aa77b9dd8ffeb916e98ec6cffb76b8a7693ae03d1064b422823e4. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/GRW019500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0095be7d54cd4943b33766176009848db6e5ec9c39986ed18928ee5e2b072b1. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/GRW019800259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8346b902c76e564db8e8b74cf4ae28888f90685c4a09950abc0f63187f4bf17. 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/GRW019800262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8241ac2ac68b72dc69bacfaf1b0a0b0246b4eb026ebc77d35621e832453406bb. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/GRW019700061.