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 0xd5fcb566bbaef68133e909c3cbe1fdd051957408c8ea96140715fb6ed5809036. 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/e89438e4-8511-41b5-ab1e-6776c51e03c5.json and https://artists.proofprofile.net/proofs/artist/e89438e4-8511-41b5-ab1e-6776c51e03c5.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 0x0d14b1e32271850629c7d85888b269e156b351bcf36d5ee236a1669207c52702. Chain 2 (Bitcoin): anchored in block 959018 (2026-07-21T16:53:05Z), 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/USHM22254027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c9982ef80e4c12b31d754bf7fbd408f4d4b4fc7e4846405feb0a75fcd8a4c6. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:57:00Z), 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/SGB242401292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c9982ef80e4c12b31d754bf7fbd408f4d4b4fc7e4846405feb0a75fcd8a4c6. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/SGB242401292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ebdc00d7a732288aeab73d99ab3e4b176e6cbe6459eae04e89ce105fda06d9. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/SGB242401440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb65cc720d206d85cb9b2f534c269dd577cd34052d42bb8b6fa1b8b963ca86a1. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:41:22Z), 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/SGB242401371.