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 0x8cd446b00f21448f496a3b9855e9263103ad8fcc51c49bb3365f04174ecf92dc. 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/af8d0e74-a631-4174-98d8-e1f4b8ba352e.json and https://artists.proofprofile.net/proofs/artist/af8d0e74-a631-4174-98d8-e1f4b8ba352e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Kabl Ma Nessallem We Nemshy (Habibi Funk 020)
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 0xc68a74ec9ae50ea59827c5769b15738fe8476a8803833a98e64a215a03f8e31d. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:43:46Z), 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/DESY21401433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd72293c24f667bf3cf58ca33467e580f986b745e7ceba787a4b5c10e1d6c3a. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T13:52:33Z), 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/DESY21401435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1620ed46bd5d698138f1bddeee5117986a5dd5e44a97b53bcb6d66306ad2af34. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T00:37:27Z), 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/DESY21401437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e69bcc65b61a317d1659af4e141cfee32af6df3b83634acf3a7c03b41665083. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/DESY21401438.