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 0x89f1db31d6fb58001d5934d2cfc70de39993bf4ba9a752cb3f484b0428a256d6. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1476d81b-5061-4217-8ea5-5bde1d5acb96.json and https://artists.proofprofile.net/proofs/artist/1476d81b-5061-4217-8ea5-5bde1d5acb96.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 0xb783329c9c8f3219b93d3af2cec0acaab91353682b150b43ca092bf357364672. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZES62569641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c00003535c3c316b11daa4ea3f1cd90aed631a37c36a43b0f3d25e2d71ebdd. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:33:51Z), 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/QZHN92548990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ed5775a211866926adcb787b4be1f1c9db8ed811adb4fc98e931ad5ba48bb8. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZK6P2579850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58abd732e5cea927f48c4fa590cd396048f093efd6ed8e2a05a8da7bdc8c050e. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZK6P2579851.
i like my women like i like my coffee...strong and bitter
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6a51c2f593465223a58f0d165abcf2fe5608f92bb4fac989f29c6af26b41d10. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:21:25Z), 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/QZK6F2577022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82cc9f99c5b4927d8e8c0ee06c952488d3e1ec9d566a849d75a68e50c56d82a2. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZK6F2577023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a195449ed58a6e2f4dc4e5459e5996af3b0d33d9f1ef0f9f417cd66e2d1937b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTAT2511464.