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 0x2866305429f08682cdf65fb804b0f2aa497cbd64f9b8557ab7eeda6371f86d3e. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/465a5af8-ad83-48fe-bf38-bf8dc661d8c2.json and https://artists.proofprofile.net/proofs/artist/465a5af8-ad83-48fe-bf38-bf8dc661d8c2.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 0xe51db62df833e6755882565c714037a960a48ded2f847e66b7b7f2433749aad8. 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/ITA872088053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b71f506c6c66c11ad8e35b60e8dbf66b254e997fd3a18d8bbd9223c2342a035. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ITA872088140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf8f723e7da885ad853a4f007687098ec01df07d20aa3d9269da8e4d69cf960. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ITA872088347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc214b4f7145ec4894807c0ea51294d30d49a8b552c98a7883d66a314833f4e5c. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:46:36Z), 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/ITA872088380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66644b7bae8a8d3ac11da9fe020355fe6afa2afa790ab2923ceca10e8a196752. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ITA872088423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5305d79106fcb663fa8708528ce2917d599ae73d9b428ab29a2bcc690c9bca11. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/ITA872088425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf8f723e7da885ad853a4f007687098ec01df07d20aa3d9269da8e4d69cf960. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ITA872088347.
What Is In Your Heart Disk (95, 2 Megabyte Extended Version)
What Is In Your Heart Disk - 95, 2 Megabyte Extended Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf457ef15728076c0b7d7fcdc283a9f3daad30b388b92d51c2a77c81db596e63f. 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/ITA872088578.