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 0x6e9bb81c79b7a4e679f33268cf4ff14cc54b8a46e58552e9953c366168ee260d. 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/4d40c69d-58c6-4504-ac89-8877fc8c6fee.json and https://artists.proofprofile.net/proofs/artist/4d40c69d-58c6-4504-ac89-8877fc8c6fee.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 0xc1d4e8abbebe7e2e72b7060a92869781d897c0b3b5c0813e5091f5d3205e7380. 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/QZTB62281647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x799d460ed5e8bc1a8bac22af9b58b75ddd1305a258c914efa173526e935e1833. 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/QZZ7X2413306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9869785bcc008c6a3f72577b954662f93189adeb74fd04e43fd0b02832da32f. 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/QZZ7X2413307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43222ac15e4115c83f29792c1a2857ec411b0da7b2d6e3e0aa1f551395496a3b. 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/QZTB62281648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f05aa6cc1e9b981d3c3906fb7b6ad46e406d0b0e56a40afe29dd2046873a5a. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZTB62281649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b97d3a88b9f58fddbe2289953dc392fd0a576212dae92c7ac4524c7572de312. 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/QZTB62281650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ac6c571024acecb90b8be9cd79864f33e9a89c7d0b75afc3d48d3e1bfaa4081. 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/QZTB62281651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6515100b10287a0d77b0d49a52c67a8fe977551a2da45fcaebbba84077a766. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/QZTB62281652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb66c63877f0978ac4dcd983bda10a50a757aea4a90bf4035c59251b44bcfd09c. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:32:24Z), 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/QZTB62281653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd2976ff46743d7a8a9176bbe6ca62a0300f7dc89e8067cb6e989b48e5e962c. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZTB62281654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf314acdef58b90ecf7a6849d74a0ce655f99032298d7eecb5b60bc11d3951700. 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/QZTB62281655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8176fbb79a95233ccdc466958b5a2f2ce39a02c763f909d8eec2cdbc1e179af. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZZ7X2413310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5655d58914af8aa194225a0960192949b0fd108cd427faf465550ae88c6e426. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZTB62281656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24127d956dd0c7d6d6a9c7a192de027616c43a593b3d4e7b10e43f1aff47030c. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/QZZ7X2413311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07bbf65f731a8f1d39773fbcc71f9ed29b06303c3ece186fc06b019d255ca232. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZTB62281657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92ec4d832bbc511f4e210ac874a0481d73b5293ecf4bd90c55f6e82af4017b7d. 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/QZZ7X2413312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b6ac0c2814c25852e3500d2a1140d8c0e58d232d19384848698d141c38ce8aa. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/QZTB62281658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c03e7f6e41076252f072714617359f9f1c03784e14e2e44b1473c51e7293a2. 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/QZZ7X2413313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b1e3793427af225f7d15a8fc1ad54a6216176214a230424d212eb0b31eec16. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/QZTB62281659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbedcd43cb5c31d4d069320376d210c2690bc0fe88842fc64245da1d9d8e6b49a. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:18:28Z), 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/QZTB62281660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe854829125b56a2fb77c568d9f3924cd3d970570ebf13f17b391946cad0b43f0. 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/QZTB62281661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e596c176469c270ebf178ea333131d8102d4f310cbf1614d3d1d78dd54ceeca. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/QZTB62281662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d0b9aa44e0380114830fddda86a35bfdc3451bcbf648099e580501ed7001be. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:29:56Z), 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/QZTB62281663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73de79e471b57fd928c87b440dd619a4151d4de7ac6db1e52e7b9cf6ad4d1a41. 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/QZTB62281664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f55289086cb5d4f4e810baeea67714bde34f70e2fd327ef20396730819c770. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZZ7X2413314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6054a50fb6dd38ef8b482299da93e68e4853b0c4b1b934c1d74903be4ed242e. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:10:55Z), 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/QZZ7X2413317.