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 0xdeeb650cb0763ea2c32aef859a1f764acf502514dfae5ffb560eb6ecfbdb35b8. 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/dbe55a89-e81d-4099-8970-37799b4bb25b.json and https://artists.proofprofile.net/proofs/artist/dbe55a89-e81d-4099-8970-37799b4bb25b.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 0x897f894f1f44e8819cbc0cfd7613c153708a2da46f3005878c33362d80e9fddb. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/GBKPL1832541.
Another Day in the Neighborhood (feat. Arlissa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f29c9d62bb5df90497787139378dc282bb2fec51e2947c1a2dc6d3a797b493. Chain 2 (Bitcoin): anchored in block 958882 (2026-07-20T15:35:11Z), 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/QZLBC2200780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x522e92eb1e6382b6b387ecf579905b551c3b29c073c22cc4a9aafd3efe953bb7. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/QZLBC2200785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b37f71b128d74d4a8da66236e894c2733708fbd086fdfecd4342881eda16ea6. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:21:59Z), 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/QZLBC2428818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1082f9cc20361b995941dc66d2068e50f940fe9644ed94475301cd1afcc76642. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T15:00:08Z), 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/QZLBC2428819.