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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c70b00ba8d987a225754c4c2a9f93f741c1e8ee6f588ad4d5fb62b9a61d43c9. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/72beb6ab-3e4b-4d22-9bfd-644e92f2e98c.json and https://artists.proofprofile.net/proofs/artist/72beb6ab-3e4b-4d22-9bfd-644e92f2e98c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Workout Beats, Vol. 9 (Musik Zum Trainieren) [Winter-Edition]
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3b8b7d3e2c8f90a24aca5f19aa21b77511672a6c94a1af8353c8b7fd215bad. 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/DEN061600856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae457319bc1b7e16d81f4fc2a7ff743cf837fe1c485b0834a7cd253e79c0e301. 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/DEN061700236.
Flashdance, What a Feeling - Extended Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ae2d737bc8ac83474797b2361b3bd3e24b1f3b3e2cfa0e74f8f145dc7ed25a8. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEN061700135.
This Time It's My Life - SPYZR Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ee6897215cd43945c2bcee0423f59d2a8c61d1850f6aead81b9062228729990. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEN061501099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc7110dfe63485101842398582631faf26d9e4f7e127c0f503a772f5d321fa53. 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/DEN061501098.
Kontor Sports 2022.02 - 130 BPM Workout Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd9c9cc6f6a96d00b4b882947a984a9649debcdff6f820462f486bb7cde8ec8. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEN062200242.