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 0xd66cf1b9778f1ba7e0397a4033d4c385a21de4afb7d990a7d79a6183f91088e9. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6f17f1f0-06f2-4a55-9e1b-4118ddbcafe5.json and https://artists.proofprofile.net/proofs/artist/6f17f1f0-06f2-4a55-9e1b-4118ddbcafe5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Permanente (Tiraera Pa Don Omar Kendo kaponi)
Ombe No (Tiraera Pa El Mamao de Don omar)
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 0x3703892045223635af45c6e921ef15ef754a3f08230a7ff113e79ad11f1d362e. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QT4K32503420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5ed43e4b9b1cfb707bbe6fc157641196ed8171574e93b74839947abe10fe55. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QT4K32503413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95426d47394eaee7384e34292f8561646dbba501f79381a5469259e99fc03ef3. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QT4K32507298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d30b01926a010f87cd81a796f79bf3a689c39040f924cc3d896d1e5b00081bc. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:48:41Z), 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/QT4K32507311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ffc3e7537d8acc1fe1028f52b82f147ef08c61e53f85bee7f119a986ed44eff. 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/QT4K32509135.