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 0xd5784bbf9b2d97b20a0c48fc4354df8fe4d5b5988a094f6f2cb24f0794cfb016. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/536f7ff8-ea9d-4384-afd8-bf45bc10ed67.json and https://artists.proofprofile.net/proofs/artist/536f7ff8-ea9d-4384-afd8-bf45bc10ed67.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Tahiti (Original Soundtrack from Moving Art)
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 0x257a23df5f7c66f9a1a144990a6ed0da8a64ce968ab53f8eb870609d8994b0c0. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/SE5BU1758221.
Love Will Be on Your Side (Finland & Aaskoven Mixes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x414539044a17db647d4cc23224922eaafdc903ad90901435938dd4a69f4f0dcb. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM6MZ2430136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb947d19f5abca527d0c0e9be16746931ea9bbb32ab82e83610c75db310b10f1f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEGE91700079.
Pora Sotunda - Finland & Aaskoven Bliss-Ful Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a2aaad1a59d97b5e706c696c0e28dc84822fcb7617bc7bd7be03af8a93510a. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QMFMF2128714.