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 0x5316bcbf99703eb5e2f417cad5e174c8c5e86acd6de62a008c31b5145088537a. 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/80960cda-1afe-4c96-8638-bf1bd6d9ed24.json and https://artists.proofprofile.net/proofs/artist/80960cda-1afe-4c96-8638-bf1bd6d9ed24.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Lafz (Live at Pepsi Battle of the Bands)
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 0x943121c1b221d2c6570e7ec6b7aba03ed4ac83b06e788fa45967c311b597d162. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZK6N2138021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x071d884345c8e1b924b0cdb4fa29b75c911d41cab326da025dfa65e9c84548e5. 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/QZTAT2140231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x982ccb0e42fa7037302f2e0f99e96bf487a0a84f8c0a47ebc481ffd84a842aaa. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZTAT2140232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5c4bd3fe20f184a25f07d29bd8794e67a1af6bcc966b081f2f4169d4ad40723. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/QZTAT2140233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x951f32019a5dc0ab8257768b41ebeb8642bec4b893c2919a5017665da5cf92dd. 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/QZTAT2140234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be8991373186463328523d8cb0183983b864b74dd7ef9c5d78737d3fec4e873. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZNWZ2045537.
Saaz (From "Sumit Sourav: Vansh Ka Naash")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x511bd127d8cc5f2613d8285bdd0f5c9dc9a6baa2048a6922972c3ffeaedc1ef4. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZDA62509079.