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 0x99b487f17161abd7dff5723258d00d151df0bc04ce1667dae576301dc716c8d0. 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/13e867db-be55-431a-abcf-21efea99549a.json and https://artists.proofprofile.net/proofs/artist/13e867db-be55-431a-abcf-21efea99549a.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 0xe85c57f27d12c198518c198d1bd6fd49d0d8aebaa00992e46539d4e07943e612. 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/SE5Q51800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcfec5ead8969621e2a7a61a45d77320d134a6eeba7bb83b42c54bd41eaf3ac4. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/SE5Q51822576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe85c57f27d12c198518c198d1bd6fd49d0d8aebaa00992e46539d4e07943e612. 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/SE5Q51800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b828728b0c2c1bb5cff4ef5cf75a9762c1324cd854343f4ef90fe4536b532bc. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:47:45Z), 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/SE5Q51902172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2359de98d54b32f8f12d2c3e0a73611d3dc044ef99b9165d316017cfde7d7ed1. 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/SE5Q52101934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd76924c068069d4d57861b24cc54342eda4ca46dd25029fd1ad69f4608004ea9. 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/SE5Q51901992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd61e119a236a42ff5a27235324140b7c6b2d25e78a02bf5f299c0e65625a3c1. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/SE5Q51902755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dfa03de1b60057d035d18fafed8c11a3ae39731159d659a616a171639777cf4. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:39:08Z), 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/SE5Q51903224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01541a3b3cd39eb6890283bb9289656f30c7960fca298ac4bf09a79107c0a005. 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/SE5Q51903791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf928356295371aa25c5f580aa1b7514dede32b1c9028e1ec445195e0933b9810. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/SE5Q51903790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a6b7214bc0153a852e50b966ef441c8de9c775498a0c44c3bcd5554dfd1d7b8. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:37:49Z), 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/SE5Q51903771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe77ca5dad9308ad32a271783123a8dbc47cd8686dadaa3a6745def44ce1ee4a4. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:04:42Z), 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/SE5Q52002230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f3b55cc6ac48c167807f9a3bf3b196e5dd81496bee08bfec6f190226de92fa. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:38:39Z), 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/SE5Q52003052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7e76b3935eab989192b12ef4b4e3a214fbff594a5038eeaca9466af491377d4. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/SE5Q52103022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a1f2a7dc9ab896ac3332e4472bfe7ae9b0176149eeab9f3b7a010d4fcda718e. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/SE5Q52104416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75c58a6376f48b90af70768d4ae664e270688e18ea730f7d354a07a9ada62664. 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/SE5Q52201681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36c6f9d3317e3db06dcb8ee873745635b633ac4e5afc7e4a939a802645f0b2a. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:20:54Z), 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/SE5Q52203160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ee097bb453f5ba78d28771b1bd6f74e770e066b2435ab39752a35b83d69d9c. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/SE5Q52300317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f3d74fd037668a92a63e7a2d2293165c86b2b65e700c3dc8cd9d0d8bb7d8727. 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/SE5Q52300766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4686ab33ac1a8950e840d4056d24d47e9675d73db3efa5219f8bc1c63e701baf. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/SE5Q52300765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e659773e5f0eec4ac9b2a0d773c67d46b23fd92753ec42aac05ac691ebc0b91. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/SE5Q52303412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc2e345f9b754a45869c6247103f3f0eba56711b3f3e31629ce5d0136860e1c. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/SE5Q52305039.