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 0x9baabc6e6e08bacf168ea8babe99ea4f35438d7ff9f5f4d46660945a298b3cb8. 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/4c809ed5-d312-4102-a313-1125ae9b92f1.json and https://artists.proofprofile.net/proofs/artist/4c809ed5-d312-4102-a313-1125ae9b92f1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Currency Exchange (feat. Fly Anakin, AJ Suede & MILC)
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 0x793f797d392149591b81b944c3cae56848215eae8eb96ac94c31b616b39ee256. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:01:11Z), 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/QMDA72565249.
Seeing Green (feat. ICECOLDBISHOP & Blu)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ef893daddc16bccc800f523899b8f21078562100415878c4e1eef302464aba4. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QMDA72565246.
Delta Lounge (feat. Mal London, MILC & T.$poon)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8a4d4049b2b2c68a6aefb01f25908225ea0ddc2ac08544f05d96af5290203ac. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QMDA72565253.