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 0x8372ec172c5d9a9f3f0cc11789e9644a808f062af6db297ad79a67703bff7daa. 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/cac26054-6e98-4dff-a884-802b6c8aee12.json and https://artists.proofprofile.net/proofs/artist/cac26054-6e98-4dff-a884-802b6c8aee12.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 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 0x9ee9a53c98e9da0a4ec097838cddc340ef0750a512f27cd587a7c3bc881b82f2. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USCRB2300106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce5429e09a1b65cb0a910f01392466abb3fb75d11c6ba83592e760557615bb67. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USCRB2300104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f60b9411493710211b12a9ff37f8f7850fc24053e16bc1fd7a7073b9021c53e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USCRB2300111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c31557318b97bce23549cdc445aff2f575ca3d04e46078efe0bb5f2ccdf8973. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/USCRB2300110.
40th Anniversary Reunion - Perfecting the Crown
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44b593692dcf1983350dad3dfde6f45a86f9bf59ef065e91fc1c1967409d5d09. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/USETB0811468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e282513f90714fa19acdaaa823f2333c440e5051300d9e6ab34603b4c3e4aa6. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-21T22:00:50Z), 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/USETB0610637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4462e6b65593402411f604dfff140b12d62c21af3108db60b1bde2af8f6a3d18. 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/USETB0610872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29344090c91683c0262a7738281c1e9c4c381565a0ffd5e5f3d62178de695472. 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/USETB0610878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe74d59449e3e6241ff01b1e688bd52be1215d6539877a1a8040604057a797d. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/USETB0810080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283c27d737bb2899c944a7f5b772d47967dd598feb0a05201be2a03323dde20e. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/USETB0810089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda0276e176432aa82dbdcb78200c81f74febd2ce99db9a09bd502c6e7ea43b4. 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/USETB0812865.
A Kingsmen Christmas (Made Popular by The Kingsmen) [Performance Track]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x177370800d4807f31b8c6d80f792ab627ed8e0803b6466543a177efa6c3b0586. 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/USETB0813217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ad16d37d430e9e74db54216f6ac227a341f0dbbe871b47c349ab7fb3e41e51. 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/USETB0813044.
The Gospel Of Kings - [The Dave Cash Collection]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb2ad27f876750b2d82e6fb5816484bf2760e0ad2e29ec0e23249833e57c9b18. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USETB1100829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb5c0d7679481c2cf74c62ec7f71a361bde2adb5dcd1f736a012e8c31bc82ee. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USETB1100831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f64529db0a2c8c968f3a49e2039263116a88053426f37720d8000d0bff6b22b. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/USETB1300373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce05de74575626231d06857164a23f35d37868e735895a033caccded9277d831. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/USETB1400525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa475b3cd1efef66694718fc3228cdb52c8bd8c1629e9f62aa33131d2bcf427f3. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/USETB1400526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99c1a9a81d347f17e4cf408aef31f45d6f97872c11adf6cd27316a4760079744. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/USETB1400528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6946ee973cc15a79d94ea8b3a01a401a273dd74fafb95f082eb533421504047. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/USETB1400534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3332cb63f50e23c515117f043742f07b83662a40982e0e97af8c63b202cdb7e. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/USETB1400535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08edecbf29995974bed23514846a487b9910c7463f8a318dd50d3b8b627c1dd. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/USETB1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19d4dce606bcda36218bb8ab9fd05157ce0bc3ff9c1f88ac5623b6662d64e43. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/USETB1900008.
40th Anniversary Reunion (Live) [Expanded, Remixed & Remastered]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cbbe1064b27784eb98965f4b13ae821d4e5ecc308f28bd45af9d8de7bcac708. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USETB2000213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7968b797af23b68c8ec154a162cc7212c988270102423876262329a038a193ab. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USETB2100418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x424c6782cbf53a436c8f7bc152d5e2a16f30f6554ab7d349f1783833ab7b741c. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/USETB2100415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a48494f61257fc201b8d776faf8a927ef477bb980fecf28463c5f449dd0f975. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USETB2300298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93fc896d9c6e4584c6af35ed7f4c3be6610362de265bf1ddb2d3a9fa173c3219. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/USETB2300302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1512654621c329637f6bf805d6da823471e96c9539f0c6acae3cac05412b4e1a. Chain 2 (Bitcoin): anchored in block 958535 (2026-07-18T09:42:49Z), 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/USETB2300303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cde3d17461a07bdd77e10eaa4aac259a81f63b3898526d00674bd9ca3717148. 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/USETB2300297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d59abfe69213b49ca34aaf2dd7c42e1b4d4ccce6f6aea4568bfce78630df5a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USETB2300304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b9266f323f7c43a07ddf0ce846a4222aa4896cda089c2bfbdc81ce7c23296e3. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/USETB2400210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c060e6bf387eb54fa1ebecfbed036be23a4b7a8594790f58c67105d70bf19d6. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/USETB2400212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e23883a8b6550b0f1c4dccadf52482c465bce34b38ea164fb74b9ea91709663. 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/USETB2400213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ff7430f75d0e4a748f2ada2e98bd0bfa0585e5398c1b7350e62ca9d9a7eda5. 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/USETB2400214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6642cef6cd778a9e7bd6b99c9da162ea913d35e620add1c7b201e8756d1eba4. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/USETB2400215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45af939f27b8898fa2fb26d889d8cb43110c25f509572f71125fa0637a1bdf6c. 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/US3270403176.
Louie Louie & the History of Northwest Rock & Radio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97e698c1f170cd475fbf57ee4b230ecc70f6d1d1465a231457904e405c7cc7d. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/US6X81200207.