thumb|285px|Dan Ticktum, Jake Dennis, and Sérgio Sette Câmara (from front to back) driving at the 2023 Berlin ePrix Formula E, officially the ABB FIA Formula E World Championship for sponsorship reas
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 0xc2fcf8bf0a90ebf7a77caf3357e85f43ba0e2dda4f927b50e153c22557632d87. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3c1a6857-0fbb-4fe1-9930-d34df9666e81.json and https://artists.proofprofile.net/proofs/artist/3c1a6857-0fbb-4fe1-9930-d34df9666e81.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Change. Accelerated. (The Official Formula E Soundtrack)
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 0x2a2e2cbee2e891810aa301c2e84ad52f596e627843e595db0c7ceb6812dd82f0. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/GBMJG2303058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb981060050480e6943a613993be16cf9caca13bce0d057ecd3b426214c0d64de. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GBMJG2303059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe18aaf024da43831e21cd1e9b34b68680dda85b3fa723ccc00759719b392e6d8. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:35:15Z), 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/GBMJG2303060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x097e89608ff61462d69ad5489643900efa22c7965bf671ec4712cdac6c410c8a. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/GBMJG2303061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7701aea87c0a6fbefd812b1f970979e0dd6da307f023ace84f627468957b34d1. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBMJG2406390.