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 0xbad0da0a42bafd401144aeaf15283c657940eee26da34d252c6db7f666959809. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/53441f8d-a669-42e5-93fa-7a963c5c35cf.json and https://artists.proofprofile.net/proofs/artist/53441f8d-a669-42e5-93fa-7a963c5c35cf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Remember Me Grandfather - Lakota Pipe and Ceremonial Songs
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 0x68ea4db94cf2b95513c8dcf1e59f68e9ad71cd7a57f018c7a1d2e9fa2074b5db. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:41:46Z), 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/US8640640203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68c70176910ebd6f7a718dcaa7744cdd8a85b45e8795b0ffbfcfd5a2ac1eb5f5. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T23:07:38Z), 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/US8640640204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2347616ac2e16800603b53b231dc69a867c3713766d3cc2835546c8810635114. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/US8640640207.