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 0x6bff26cbaaf2a6b1686ff95cc52c928355191ec2090f205252ec5198ea6fe0a2. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fcfcfedd-87a1-43d5-afd2-a40e8fed1a66.json and https://artists.proofprofile.net/proofs/artist/fcfcfedd-87a1-43d5-afd2-a40e8fed1a66.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Brilla Brilla La Stellina - Original Mix
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 0x6bc89933b9579c0b65f9f8f2b2a865cf00ce741a85bc5e907e7b4b8420c082d0. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/ITN9E2100219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c09278358658bb50eb2501960e8ed5955d3e6a86d33f5e523b5f0ae839279c5. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/ITN9E2100237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e1e495fa97c48d11acef5bb20a68599d530d66d666031cdff512f434466e5a. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/ITN9E2100255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeac329afe1569da5c5298ca51fb668cf32aa16208019f316f70394251c102bda. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/ITN9E2100400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafff9d7e235f12f5346c5f2fe1f262d8c75a2b1107feae823213a3d789eaee8d. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/ITN9E2100402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88468a226a7bad22b7ab90e6a1d2e8d89d67cd0d1321bbdd381cd55b6cbaf117. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/ITN9E2100404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd27eeeae9d7d9f3c79c8b2352ae66fa701e81aae1271bb1c5658ac120eb9fa4f. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/ITN9E2200406.