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 0x009acc63412c2c4ebd57ee50a49dfd1275588f4ccdb9c6cc32fbd0d2ae6d518e. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dd72d36e-a65e-4807-96f5-79535040269d.json and https://artists.proofprofile.net/proofs/artist/dd72d36e-a65e-4807-96f5-79535040269d.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 0x35ae862e203561cf3a8638be0a431510cf1a65f1cb55bbaf1a762ec9a197358f. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FR2X41406600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0f8fd09934b23939a9829412b56f52cac1732963a88385750213619ed2ede85. 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/FR2X41542173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d39027e834924fe9d4174740d17f876d274d2ad9ba34fc8a594169464ecd4fd. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:04:43Z), 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/IDA601800770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c1379b4a360471dfa6613065e8982faa970a1c3cc7371bf7caf23ce87126835. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:01:37Z), 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/IDA601901122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34ef14fe005f028314dac17f0f5c105dae4b6937e788e018c8cfb059ab1972b0. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/IDA601901358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe907b55d3927c68c59c6ae9a204186dcd0606b24d4d4d3623ba89dfe5486636. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/IDA601901397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59325c81deda362ec41664a9045c8f45b1514e00173d22a60019045981e565a4. Chain 2 (Bitcoin): anchored in block 957569 (2026-07-11T12:44:25Z), 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/IDA601901616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x980c148f339e1a371fde43dd05c0c014faf6dd9576047a4c78b827e103a2bccd. 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/IDA601901655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0581f3cbb8f1c7ee107486c975fb94c0ea7c2a6f6a52a673c584151af847715c. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/IDA602300294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x105eb76c627d5e256b7da174f76d2eebcf9b3eb0c65c9aede83db0fd0c2f8d44. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/IDA602300305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc9b3a509524a83073e84415734d5d81a51cc09305d127334fdc90a84f52608. 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/IDA602300838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee559f43bd706ac07852c6c6e9795c57727ded7b6cd7ddad44d6311929acbc45. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/IDA602300914.