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 0xfd5a8d70d76a8c65b51d937f535937a46a157dba3490cf6827493287b1840ff5. Chain 2 (Bitcoin): anchored in block 953678 (2026-06-14T19:23:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/621d3101-30a8-4329-b137-000fff004ada.json and https://artists.proofprofile.net/proofs/artist/621d3101-30a8-4329-b137-000fff004ada.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Last Dance (Produced by Spider & Gonzalez)
Michele McCain presents Marivent Soul (Produced by BKR)
I Betcha Don't Know (David Ferrero Classic Mix)
Midnight Train To Georgia - BKR Salsa Radio Edit
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 0x370ff5eccf7a0d3ff2b92db14bd5311a956ba7ce34120c3e1e43480532161083. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QMT581105401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8951446ded26fcbce1ee797e5b480ba4f791b593e10001ae2e0960c71be4ccaa. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/QMT581100315.
All I Can Do (Gene Leone D'Street Mixes)
I Betcha Don't Know(The Remix Collection)
Angelitos Negros (Benjamin Kristof Rakun Edit)
I Betcha Don't Know (Submantra & DJ Umbi Soulful Vocal Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a0278a2c98e33f29f1db912c9742269ece90e0649650c55a4e936e8b1d1519. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/ES5621300225.