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 0xe6ecb187511f1485a4feafd4cc3078b573175a36564d1525f3d1b379ff5683a5. 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/95a43a9d-5736-41be-b387-f81c88fe12a6.json and https://artists.proofprofile.net/proofs/artist/95a43a9d-5736-41be-b387-f81c88fe12a6.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 0x2bc518f96a4793b4483379c3a35690083ebf5c623d220fa2ac8bf1753e2b5ea7. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZK6M2085556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ffda703011a680ed911957367574066e65f2c89aec5e6ce6f1637f037fd13e2. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:00:57Z), 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/QZK6M2085559.
Do You Think There Is Life on Other Planets?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76ff6fdefdd9f5b2bde2ddbc46ae9ca572a1e80583a6b194e9da1aebc2a63797. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:20:49Z), 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/QZK6M2085561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76ff6fdefdd9f5b2bde2ddbc46ae9ca572a1e80583a6b194e9da1aebc2a63797. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:45:47Z), 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/QZK6M2085561.
Television / So Far So Good (voice memo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e1d3facd02c70fd198086d61fd0358d4774445069fb951c27f464c570b6e74. 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/QM24S2201423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd00accb184b2c4646ab56dfa038b545733c5f35e15726b64f85a720503597b. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QM24S2200194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9948954fe289fb40f1b342ebacaeb75e32ea13061ebbfbcf91d80ee0370d9a2. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:04:07Z), 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/QZZ7N2449896.