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 0x192b15d395f413d8d55b20574386c9fcafe24fd1b1d272fff3b1ecb07936697b. Chain 2 (Bitcoin): anchored in block 953768 (2026-06-15T09:30:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c0e2c9d6-522c-4eb8-ba92-3e135c974582.json and https://artists.proofprofile.net/proofs/artist/c0e2c9d6-522c-4eb8-ba92-3e135c974582.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0xfcf21bfee68d29daaf6aa066ef39e13e44a8db98544750d6dd2f85973feaaa7f. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZAKB2012411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa61baf1d2b4f3b82faf7e9070fc9a959ea3c77e13cb6ea43f13f50116c56c336. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-20T00:25:24Z), 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/QZAKB2012412.
Hush Little Baby Don't You Cry ft. Olivia James
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37353c59eeab1278722e94c3f030abea55b3d96db96b7ef0c63a81283d8fc7a2. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZAKB2012417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a94205087ba16c71133b3ea9087a30bf9c0189c2049178d6e8718cfdf9851a. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-19T22:43:15Z), 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/QZAKB2012418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ff91d5743560abab044d7beb6b2477218db31bbee6e3e61de22b16b87fbc2b. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZAKB2012423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab4c838a40e352352e101dad18bf6742fd4da050cbb42da131310f9dbe49c77. 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/QZAKB2012429.