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 0x9f4c6b1af970ad9e1fe741b3352b2310f64665458954debde385be9fce6046f4. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c3c905d9-8e50-4e49-a4c6-7fa64313b792.json and https://artists.proofprofile.net/proofs/artist/c3c905d9-8e50-4e49-a4c6-7fa64313b792.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0xa23511c3fbd6a65236a79524a0ed503cb22e25448cecbe82d56711879a7ab782. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:15:00Z), 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/FR2LC0700150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c8da09063227f1f8b4cf75229d31c569203223c27717d043639fba2b6627bcf. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/BEE322405009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4165ca7e406bb4215547e5baf3080be2cea9e27877316e6d3d343a99ac5df99. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FR2LC0800040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb3785223d5242ad6817d58f15943f7d75d681d0c6589a19d10b66aba45ba2a9. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T02:05:14Z), 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/BE31O1105320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f051026a21bf31c7a4b63026712a3da50b46f57b983b013b0967f5aeeb1ce0. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:24:22Z), 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/FR6V81389171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0077e561fbab0b5284941bbcc4f9965780d7dd8e1485106ede40791c2972f1f7. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:19:47Z), 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/FR6V81390797.
The Theme from Chicago Zone (feat. Mr Noba)
Again's A Melody - Dawa-X & Eight-D Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0d2113e6592c8f274e550a7204e7d4bc3613d5ebe23effc3dde77c45fec85dc. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QMFME2378531.
Again's A Melody (Dawa-X & Eight-D Remix)