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 0xa140f5c2e1203a8b5bae262d6c2c6582ae61165e30d1f1c466050a8fc57cfcb5. Chain 2 (Bitcoin): anchored in block 953714 (2026-06-15T00:43:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/82e7ad0c-da31-47e5-9173-a7032c101962.json and https://artists.proofprofile.net/proofs/artist/82e7ad0c-da31-47e5-9173-a7032c101962.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 0x25bf6ccb930b203376d7d137e30910617555f06f60a4c80f778d3993a823feb3. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/IDAB30600662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x890ccf6094b7ba63b6f3c56b7c2b4e4c7a11ef72a0e02c5923ca399e9ae929e0. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:16:58Z), 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/IDAB30600665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb3686676463a5122dd99d08f071334c81da893d7d6258140b1b5b41339c9292. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/IDAB30600667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b98a793a968acbcc3418dc23d0eef77c87837897a50f50958eaec52be320a65. 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/IDAB30600668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da2c4c11818453e1841f87636aab64d2b8544f55db1998d578e7aa4b5aa4505. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:23:32Z), 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/IDAB30600669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f8179c44c66748a6f7c525c0723058b87464753d8834fb2137286d09c2602d9. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/IDAB30600670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f97b033b92a65ffb25bc46c1c3b9730e83fbde45cc606facc20d3401b85278. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/INS181400289.
Tauba Main Vyaah Karke Pachhtaya (Punjabi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f72a3f142b0469ce7b2fc5adf2948dc4aa51f60e6a555cd774200b386d0a527. 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/INS181400325.