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 0x1a0dad6c27c20fd1ee0c4f2f9811c9a406875c6779cdc9d23a2c72fe9f292fc9. Chain 2 (Bitcoin): anchored in block 954618 (2026-06-20T23:05:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c89f7a32-7282-4969-b2fd-4c4262e8a5a6.json and https://artists.proofprofile.net/proofs/artist/c89f7a32-7282-4969-b2fd-4c4262e8a5a6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Homage to The Alchemist (Dept B Remix Roland SP 404 Version)
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 0x6c4342813d441b0a1fd103b63b1655e15c031f9a43932dbd622fb515e47f5caf. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:29:57Z), 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/QZNWT2390229.
Homage to Scarface and the Geto Boys (Dept B Remix)
That Chill Jazzy Boom Bap Joint (Dept B Remix)
That Chill Jazzy Boom Bap Joint - Dept B Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de3908a5b85b7b1b3f44d3f695df3c9c347c2d2b5ff568f95bbe00d0cab4e09. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T09:08:06Z), 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/QZWFH2378883.
Homage to Madvillainy and Dastardly Caper
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c79b18f811de0e14ecfeee330b341b7e53cf920786062c9e0f626eaaaceedce. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZMEQ2467756.
That Roland SP 404 Thing Part 2 Louis Benzoni
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b90f6e765b03f2aff5a65cc264bb4bfed3de0fd695d4052a66509fedb02864. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZZ7L2423362.