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 0xbd6a63f03d9900bd3d23c4555a1beee3a163b4659a0e11975b2c65a3070adfef. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/abe3e169-5ca9-464b-8ae9-a9d83eff7545.json and https://artists.proofprofile.net/proofs/artist/abe3e169-5ca9-464b-8ae9-a9d83eff7545.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 0x502ce1ee361f86aef0866def811421a0261b2aa67e82e56ed62b5e248f2b4452. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:47:49Z), 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/QZFZ72239043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc43899b46778f99820b5f9715191ff51251d7929d6a8fb6c3329dd87168e932. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:25:28Z), 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/PT9EY2300298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x434f763fa1b79dcbf1cf923cbe8c8be18b633e1347e6d9b476abeb2c23f06b27. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ES71G2413062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4861e6da4ffbc406c640fdf6afa62850b0252934f70990b5361ca488a1040ab5. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/ES71G2426754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c8ea707c217acef935052a7e43c34d8c1cc287f5b78d3b964585bc14fe0f5c. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:09:28Z), 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/ES71G2426756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe67567569c00f468f2989f722d25c79260282eca91a84ad72937950df08a001a. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/ES71G2426761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6302e7a7352e28ea57edc4f68a1ec5318fa8c386ebfb03a8fcd0ca726e2c6d4f. 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/ES71G2426759.
20 . 05 . A self-conversation is too loud for an empty room
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19365f373e4adc9f378fcac1a9567dc98a2cf29579723eac79bd9ed2bcee2d41. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PT0FY2500001.