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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x145556edf599155acfa198d285c0c46f0b8361904f896b34f8af5b5e90ef3e36. 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/49ffb760-ff45-44d8-96ac-722c5a7413e8.json and https://artists.proofprofile.net/proofs/artist/49ffb760-ff45-44d8-96ac-722c5a7413e8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Cannonball Adderley Quintet In San Francisco (Remastered - Keepnews Collection)
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91941dd45c565e9539a09fa522541f7b959b45e052f11b6f9860c870d3b007db. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:04:46Z), 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/USFI86000104.
Live in Paris, Vol. 2 (April 15th, 1961)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53b915d3bbb284c7aed593e129f86b230f795b00fe78ff557cf9b6368d53783a. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T05:30:12Z), 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/USCA29001531.
The Price You Got To Pay To Be Free (Live In Los Angeles/1970)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d0ea2663e435ea0c4fbaa053fbfef9768335ddba26864134492106c99b73ce. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USCA29001501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4042c7692dd77ff9f0a407c8896daab3b05ed1e46a1c798940dbe6aa7fcddbb. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USCA29401007.
Oh Babe - Live From The Troubadour, Los Angeles, CA/1972
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ee9568e5e5124e53e521c32d11a7719f34675eb1b7a0bb7600db7c188fff0c6. 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/USCA29400994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1bb5569a9a093432a9c2d378a1846b64204c1a67ef061f4c131d343c159875e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USCA20001535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21b184333ff1bcf027cb98664a31b11601199cb18e1779fc6dab1da41438d58. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USCA20001536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012066d55ea0a134c9162f38180bbed881b63f92faff03dd8f8a6c9e9d367122. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/USCA20001537.
Azule Serape - Live At The Lighthouse, Hermosa Beach/1960
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe2b6638bdce58fab657b089528fa070ba2e71408f25b92a1cd444ae81c172e. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/USCA20001538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed435ee1ef97e40914d331e04bef20961b8fef349ddca56d65f99af565cc535f. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/USCA20001541.
The Cannonball Adderley Quintet In San Francisco
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0033ebc8798bde1e8ced6568f6f1d9c5bbb551fb9941fbe4212b1b16841d4e3d. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/USFI85800223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ea25be5708318330f4e474f479e947be07432bed8d2c432b6bf73d8d264f8e. 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/USFI87700166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59371d62a752741a3012aed8d635618c05d058d0ff86ea1ed08479194434dbc3. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/USCA20000122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x709dee7ca89ce4c131deebf868db58142d4eca529fd4a334ed956a643f8088b5. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USCA20000125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b6ee779baab72a59c863f0cdad9a8b35ed38050cadc8dc31ed5392629559fe5. 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/USCA20000126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89756fbe062af6ccbd2bb885711b46e22949c3e96c559a58438285bfdf80cc51. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/USCA20000127.
Cannonball Adderley Quintet In San Francisco [Keepnews Collection] (Remastered)
Volume 1: Montreal 1975 (Digitally Remastered)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01264d0c806b0c3d8a85f55ecd37854a5ad8f594a40a576837278853a9be87f9. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:52:48Z), 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/USCA29501885.
The Cannonball Adderley Quintet - Exodus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf8031bf8c268ee63ad7fc9e59a729b366ea5d531ff0603cf5b6ace173adf09. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USCA29501072.