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 0xf7c10ce0c31b4e77005538fc1bbbd416527cce56df6611c3db1497ba5650efb0. Chain 2 (Bitcoin): anchored in block 953819 (2026-06-15T18:31:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f90d91b9-9fe4-4400-be02-7f58ca94c3a2.json and https://artists.proofprofile.net/proofs/artist/f90d91b9-9fe4-4400-be02-7f58ca94c3a2.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 0x697b239d19bdea1af959d58c1e90977180b44bbac385018d4fd2d0c5028a35ab. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BEUM72100044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697b239d19bdea1af959d58c1e90977180b44bbac385018d4fd2d0c5028a35ab. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BEUM72100044.
Zeven Anjers, Zeven Rozen - uit Liefde Voor Muziek - Live
Saved along the way - The best of Absynthe Minded
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f8ab8902778467fa90e77e1ca3480ef707e44ab08f15625071eb83834cd5283. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BEG332100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54fd949a44066f7939dd7fbfc534425bd38cbc235fdffb470697be1de76d08df. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BEG332100019.
Worth It - uit Liefde Voor Muziek - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4261b1d1d69e1590e7561fa820b53c8b3590848fb730a6e85d4642334f2e8f2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BEG332100040.
Off Shore - uit Liefde Voor Muziek - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x828012b705e210c58e3622b401781ab1b2ee4cdadd55ffd2cd881e5ec6f24a3a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BEG332100047.
Walking the Thin Line - uit Liefde Voor Muziek - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b3f67e79c42111a206dc32ab122f2fade45aad9f6a15899256428f227a8be41. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BEG332100012.