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 0x84cca8212af5b26fab08a69b507662a12dfad034e314e0ac7a3acb5919ea865b. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/73f6bd80-f73d-4334-96d7-718c339f2fa5.json and https://artists.proofprofile.net/proofs/artist/73f6bd80-f73d-4334-96d7-718c339f2fa5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
A Decade of Decadence (2001-2011) [Deluxe Edition]
The Intelligent Indie Band (Pandemic Era Classics)
Linus and Lucy (From "A Charlie Brown Christmas")
Electric de Chocobo (from "Final Fantasy VII")
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 0xdc679614f28d8f629a6351ce2b8831acb89330bbd8fdcb31ad0a9c1323bb2d17. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T16:01:25Z), 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/GX8KD2214424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29cfdeb2e419b16080cd130b10cf3f8eee04641d1ec89fa757229cf7def97dbe. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZPJ32446671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec9f2ffc6dfb8ae2268c4743cd87ca53effd70e93b619d080803998ff6701ad0. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZPJ32449176.