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 0x30a5597a3554b634f203e9aab12cd3919144edb740691f52c67ffe1256e257c0. Chain 2 (Bitcoin): anchored in block 953588 (2026-06-14T04:52:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0188e8ba-79b3-4596-aa29-40860489ab39.json and https://artists.proofprofile.net/proofs/artist/0188e8ba-79b3-4596-aa29-40860489ab39.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mix Septiembre Regueton y Pilita (Remix)
Mix Salsa Fuego Vol #2 (Special Version)
Mix Salsa Fuego Vol #1 (Special Version)
Flaper Civic Dorado Mix (Versión Especial)
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 0xaf4e99495ecf80d4d3dde8da394d2a86f3f94c38f9bdb265f70ad4a9cf161e9a. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/TCAHZ2432138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0962f06a09269214cd947fec9e05aad11c226402d02631bf01f6d84280db0a53. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/TCAIG2400141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb55af57b0b9cb8203f289e3dedcadd89a64ab445a1f6f9b33f678b3da8195bec. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCAIF2400906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdebc0af65c875b870dcda3d0d7f2419ffbc589020b8e82cb0c5e3320dbdc450b. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:46:18Z), 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/TCAIT2437060.