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 0xf980ea370e84eb4f135c64d12426ec898412459c0165ccec75e41d5ff2ac52d8. 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/d9ffa483-7245-479f-9afa-060b143c2e76.json and https://artists.proofprofile.net/proofs/artist/d9ffa483-7245-479f-9afa-060b143c2e76.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 0xe1ca8495b709a5f83b9a8595b9f87cd2a4736a61a00ec9e60d4b0020f7dfea75. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:18:14Z), 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/AEA0D1871366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c6a064bf712fb2dadd869305bfff1229fd428736db3613380013d9fd8e2efc6. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZFYZ2084010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f13b321a7bdf2d4dd15bc2b1aca93e1d32c528255cf444252f298961fe4c08. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZK6N2046687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6953915340af50bdce053c725c4020d485760b3c1ff8c69d5ccaa92814371049. 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/QZK6N2046689.
Welcome to the Fightclub - Void Stare Remix Void Stare remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a545d98e0cd46a37885cd66e23b0c3a7524dcb0d37f1691bd644d6ef2476dcc. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:49:47Z), 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/QZFYW2194639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83950da0355b8d65a89bc521663bf8bf32333087571a1dd849f675b8c409ea73. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/QZFZ42204435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc58c4771a5351877033c84d6fedadc44863efd01c54c6c99d2238db2e6c4bd. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:43:57Z), 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/QZTAY2334469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x140edf3ea2c6f1c068cbfb6acc341f47cb2bbccda5510b6f3d978dd05a27ff85. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZTBF2567782.