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 0xc2908a458e1f6181cb4200989de693c8884658c8738212224060ecf3dc663473. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/878edc7f-4d94-4f08-b033-1b5f4ba9658f.json and https://artists.proofprofile.net/proofs/artist/878edc7f-4d94-4f08-b033-1b5f4ba9658f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Live: Teatervallen Kalmar 2024/05/24 (Live Teatervallen Kalmar 2024/05/24)
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 0xd0e76bcbf2a5f5147ffdf6e3999b6aa24f0cb8a47c9fa49fca92d467954ebe7a. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/SEYKV2510001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c06cf268d9b8d6d05b327152ba099331fffdaa2ea4a25015303f81d5ca265d0. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/SEYKV2510002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8839ca4612b05787593728e127ea51ede77f71f79a6624b38e047625c1818743. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/SEYKV2510003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x347a9bdaf73a9287ad3f332b06366d09d86eb2b0749c40bb6eb707bd00d0e3ca. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/SEYKV2510004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe02276db0bdb8ca0d32eba9bdf469020c7f2a41a4c987a00796c28ef6a8644bd. 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/SEYKV2510005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca6e682af8112b02fefe678794bd0cafdc3d3aa4e5f492b5966ec7a01808f21. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:33:45Z), 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/SEYKV2510006.