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 0x4bf2ecb0e1c7f5e540ed6776da76cd30466ba23a57cfadbbd8f39a5f04922895. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d1fdd4ec-961a-41a1-835c-67eae920781d.json and https://artists.proofprofile.net/proofs/artist/d1fdd4ec-961a-41a1-835c-67eae920781d.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
IR17: Sacred Power: The Steven Stanley Mixes
IR 26 This Land Is Not for Sale / Ivere (feat. Asian Dub Foundation)
IR 27 Shadow Wars: The Jamaican / Hawaii Mixes
IR 34 Galdino: Truth Is What We Need Dub
I R 35 Galdino Dub (Transparente Remix) [feat. Tapedave & Jah9]
IR 38 Waiting for the Right Moment: Adwa Victory Groove
IR 45.1 Sacred Dub for Nelly Stharre: Dr Das African Anarchist Mix
IR 47 Language Of The Free: Dub Resurgence
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 0x235fdf88a1e01b706fd0c0663581a95b7112d4681d26375c9096be53715227e3. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR96X1861561 — a six-check JSON result.