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 0xde4b4fbf8bb7bbe99fd0b67713d09e39b871752769d59eb23c717369967b8e8c. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9e90eef5-f101-483d-af84-6186b64fce39.json and https://artists.proofprofile.net/proofs/artist/9e90eef5-f101-483d-af84-6186b64fce39.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
I Don't Want to Be Alone Again (feat. Keenan McDaniel)
Ten Little Indians/And Then There Were None
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 0x08e982cdeb67a1d745c944625d20057c32595f88a05fa5ea8fb1043b460fbaf4. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:41:09Z), 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/NLC241900087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc89c0c2a89a7731ba17aea929860d2be4fa6b257614c0de44352aaf2051c253. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/NL7DA2300108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01330d5acb97f23a80ce74a265fc087007a19504485e5422ce4190bc352ac21a. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/NL7DA2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26f105512d549c826e41e77dfa196970d4566c17f0639b6616e34178d12a1129. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:37:34Z), 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/NL7DA2400005.