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 0x7aea2853c776a4bdd508ed073146eab871b18c1be04d118ddad0d6083cdae6fa. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e868b886-69c2-40ee-96d1-b03b866dc4d8.json and https://artists.proofprofile.net/proofs/artist/e868b886-69c2-40ee-96d1-b03b866dc4d8.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 0x33db1a68871a3876ba8f11a5b939194c31d7fb6250a3e11bb4d748f0235a63d8. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/US2S70524002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cf71b948bca74f93063e4cd9939c0a2fca34bfa018d4a993cf1bae4eb8d4741. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T21:35:23Z), 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/US2S70524003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa00fc842d15013f67b6827adf82e56d432c89211d3acfa92ea422587dc59c20. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/US2S70524004.
Shades Of Blue: Madlib Invades Blue Note
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b9042581da0f6b54cc42e14b76adac76afbb25d04fd22915340616a7f17b36a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USBN20300113.
Yesterdays Universe: Prepare For A New Yesterday (Volume 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x121ed68ea1704ce86ef9344f01b915299fa5897582d065456873ba9156eb7ca0. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T09:09:30Z), 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/US2S70758008.