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 0xca95586d91739fbb7b2d6219ed39090b6502fe7be3c3f57e2527e3a5c69467a2. 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/fae5d23a-f2f2-4da0-bfcb-06fa8b86b77e.json and https://artists.proofprofile.net/proofs/artist/fae5d23a-f2f2-4da0-bfcb-06fa8b86b77e.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 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 0x83ad87eae4962693455a343da25c866738395071db6ed8a53a3a99f6304f788d. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/ATGI41100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f1ece4577aad3c483d50f255f1a006d8bcd50403a69fba8f6d38589b50872b0. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ATGI41100019.
Sometimes When We Touch (Dance Pop Edit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f63e06f52d2d9c509f4a6c0f6c410513b85f8133d1dc9913a289a406e9ac86. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/ATB350401331.
Sometimes When We Touch (Polgi E Gabani Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc617c4515a84146389e9a07061a83034111adbeeb69477f3fe76d6db02e90b0. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/ATB350401334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f7fbd185c19aa0626d606556cc8c9def4fb654e0a4fe067c9120bbc74445a70. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/ATW770850004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd28beb793ba79b80e29abd047a6757da2b3fbb3d556ba9a5db530a8dda95b176. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T13:24:39Z), 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/DEN951300321.
A Day in the Sun (Sinful Nature Remix 2014)
No More Goodbye - Jean Seaman Remix Extended
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc900f4d6aea31587c3102b6ddf01f9f5c0dd1bee8a9f449152807987af20139d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEUE12123198.