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 0xa6737cd0f84016374893edfaa9b66bd0094665acd6ac8d2b734a080e635c3b2a. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ce6d1c0c-6662-4427-b429-9d04d4e2745b.json and https://artists.proofprofile.net/proofs/artist/ce6d1c0c-6662-4427-b429-9d04d4e2745b.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 0x30329e61ce420e9913a1895e4ebc4ed6d686c2610fb3388f4c6da53b5bbbb687. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/NLV4N1700005.
Tuintje in Mijn Hart (Like Jesus Anthem 2018)
Tuintje in Mijn Hart (Like Jesus Anthem 2018) [feat. Reyer]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14dab97be7b7fdfc9cd3bee863775da170e393848a2ea422086c4422f6aea2af. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:04:40Z), 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/NLV4N1700018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db62dbdc4077073e68ca76013dbf34ad1008a2d205c99216368574193d9f726. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/NLV4N1700019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3fd604997999858524dfd859d8797a9a0413bf78e09bb6bd6ffc4ca3924c344. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T03:57:37Z), 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/GX4R52151576.