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 0xda0d8460d4d32f1918e0f5a1c2e89172b288157c5f3709f4db385644a2b11eb4. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8cd66ece-037a-4d03-a823-f52f9308642a.json and https://artists.proofprofile.net/proofs/artist/8cd66ece-037a-4d03-a823-f52f9308642a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Notas de una Niña Jazzera - Piano Version
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 0xc848aba5a85a648964db0d3de8b008d394d68f9695851324ab4cf1e9bae01078. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:13:48Z), 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/UKXN22422327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5c0697c1d480a30ab6fe942f51c62c17c48a1af42d4f4188430c59605d0ca7. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:23:59Z), 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/UKXN22422329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e3e8f8e85f08cb4d4b463ab1310e2e072f22d995cb8d56b53ccd4854d01cba. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/UKXN22422335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde137a9f5edd13e94d0c48ec4c93b51ed4a9a3fe397507c0aa983ebdcea084ae. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:10:37Z), 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/UKXN22422330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87225851e848628ed5882fd93e5b53e87fff8e5bb404209be32684b0978912ea. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/UKXN22422332.
Sinfonía Saxofónica de Lisa - Piano Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53af07822b52bf190d53834c870a7f38e391ffc4624246aae471710db660ece2. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/UKXN22422333.