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 0xd3b3fab5637a6032d7c9953b05e4332631fa46dd40bd0cfbe23b67617a1a90a1. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a6a41810-153d-40a4-aaaa-de3e2fa61e6e.json and https://artists.proofprofile.net/proofs/artist/a6a41810-153d-40a4-aaaa-de3e2fa61e6e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Baisa Ra Beera Mhane Jodhane Le Chaalo (Rajasthani Folk Songs)
Bannu To Mharo Mehndi Mulave (Rajasthani Folk Songs)
Chalo Piyar Baisa (Rajasthani Folk Songs)
Jodhana Chalo Ji (Rajasthani Folk Songs)
Piya Chhod De Tambaku (Rajasthani Folk Songs)
Piya Mhane Audi Layedo (Rajasthani Folk Songs)
Saavan Ri Rut Aayi (Rajasthani Folk Songs)
Dhora Ri Dhari Pyari Laage (Rajasthani Folk Songs)
Devariya Ro Byav (Rajasthani Folk Songs)
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 0xbd9a2eab00c14b8a5ef40eb7e29e46c0e88e437eda7b25b4955046baea38d401. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/INS6R2000076.