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 0x4076bafd0a65c5d783877369ebee69bafbd86ec85b7518b687ac3e476ff23a5e. 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/4da7a17c-b2c5-4231-ba2d-68f66e824444.json and https://artists.proofprofile.net/proofs/artist/4da7a17c-b2c5-4231-ba2d-68f66e824444.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Nothing's Gonna Stop Us Now (Acoustic Cover)
Stuck in a Moment You Can't Get out of (Acoustic Cover)
feelslikeimfallinginlove (acoustic cover)
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 0xb85a35842656ec8645d53b821c04153af375d1c32cbffde0368edf5d703eec34. 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/TCAIM2473824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a332e2df104d42a1ff6e509ce819437eaebf82d8966c7902ddb83bee5d25c2. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCAIH2466818.
Everybody Wants to Rule the World (Acoustic Cover)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x125d61db068f95e2e49f92762825fc1490892e1d1673939519f3d16b68cf7948. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:03:24Z), 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/TCAJI2597966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f842279e548212174e40c9f76bd77d8ffcf9481feb8a68eb4f862cf209a119. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/TCAJO2510372.