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 0xbc5c2f30cc2428072ae807d50ec93b767bc426dbac64b38df4dfc462ad017555. 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/061d63d9-5502-4932-97bb-1ffc212ed042.json and https://artists.proofprofile.net/proofs/artist/061d63d9-5502-4932-97bb-1ffc212ed042.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Saint-Saëns: Le carnaval des animaux, R 125: XIII. Le cygne
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 0x41a6bf5d8372277931dff73256c6dfd8b4f3116aa2522df511c6aedc450836e8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEA809001401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a6bf5d8372277931dff73256c6dfd8b4f3116aa2522df511c6aedc450836e8. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/DEA809001401.
40 Most Beautiful Classical Masterpieces
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a6bf5d8372277931dff73256c6dfd8b4f3116aa2522df511c6aedc450836e8. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DEA809001401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a6bf5d8372277931dff73256c6dfd8b4f3116aa2522df511c6aedc450836e8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEA809001401.
All We Need Is Love (& Classical Music) - A Valentine's Day Collection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a6bf5d8372277931dff73256c6dfd8b4f3116aa2522df511c6aedc450836e8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEA809001401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a6bf5d8372277931dff73256c6dfd8b4f3116aa2522df511c6aedc450836e8. 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/DEA809001401.