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 0x0db6b09512c40b17c3c5f4f08f7c749dceee03bed5a5a076d08d6b913c322398. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d2ecd03d-3f3d-43ab-886f-822b883efaa9.json and https://artists.proofprofile.net/proofs/artist/d2ecd03d-3f3d-43ab-886f-822b883efaa9.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 0x4023ebbc69e4a2f28184bcd3c249c591c81121475ced9b9ab871a6488b4e03ef. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GBMA22518540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fde7d10eb59100a7206f5efccc169073e48f2b14c94f5145f6730080feb7b38. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:08:18Z), 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/GBMA22518612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x262434644627a3f5294e1e24dc7afe6b6825eed3a94147767aa2751d69e9bc30. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:55:09Z), 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/GBMA22522197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7765fe81aeb9fda534a80fe79677aef3b1c707a40a7056c46c93e87295d8690c. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:59:06Z), 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/GBMA22522189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab45eb5af68ebe75b7230e3fc04f0a2da113a17f2f8fce42434596ed4c1aca4. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GBMA22521340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d4806b4610fdad2be6a82972907a972050462ad9ad4bf94f7c6683f7dbfa67. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/GBMA22524343.