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 0xe5fec7c60c76864b46aa93eabb9a0049cc1a92e8c6b524a8df82b761f9340c99. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2eb4c0d7-1c64-47d4-8a70-1b7a2ad8ec88.json and https://artists.proofprofile.net/proofs/artist/2eb4c0d7-1c64-47d4-8a70-1b7a2ad8ec88.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Who Am I? (It Happened That Night Original Motion Picture Soundtrack)
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 0x3ec40b8d31c24c67096a88c6695fd7ac22aefa7b71116990d78eb7c0c539298a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCAHN2379394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf05637f50b9f51586c645685bf3cc9175b5d9890f7362dbf2fb8165bc3c5c9ed. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:11:06Z), 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/TCAIA2495749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb916194b1ec9e470d9edf7b3217fbe86fe453b93a083f72f0c5b293ae81c8109. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCAIC2489214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4748a656d8f94bbd5d2c7db830f0abd486a5fc03bd5ac1d770160c474480e8a9. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/TCAIO2429353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec99cb30d09ddaacc06bb49dee73f8dfbbd7d6df7ee4a33815f1cb237d896674. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QT2VB2427060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e0a8c5a259ed5bbb7908c5a08839099304f4b8fbf29f8446f8b2eb12b914c0. 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/TCAJS2516492.