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 0xbff34995be497fd211cbd1b61776002200d780efd593cea9ac68b8fda2009bfe. 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/897fef5f-d220-4427-b436-854e53ad2651.json and https://artists.proofprofile.net/proofs/artist/897fef5f-d220-4427-b436-854e53ad2651.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 0xf5cfb95c2c6a9f692f98bb769add00c1a28a25ff9b101567cf8a418e3e016263. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/SGB502508726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcadba3c3dc2a255c590752a12bae48ec765787b100e705a9fa55a620145534fb. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/SGB502502395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6981c5145c6161a605dd39d7d180367ba0844211dd8261b91115a3477953d749. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-19T23:55:45Z), 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/SGB502505241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37395ae3acc89ddffbb1865d55f8be0f64ddd6271e40f5fb56633d7a1d7ed2ee. 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/SGB502508483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x358bd59659526acf5044ad5c3336d0540b6a7bb7a6fbd48bc0ad42904751ce16. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/SGB502506324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef477f9cf0f36687d767331c5a2b63cae8d5eee9b1c1bab1c58806f9d42395f7. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/SGB502503968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672f4eaf1cd670ecce74f977f05cbb4e188610bc410431fab29aa5c0d85c89ac. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/SGB502500126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa22b76e7f64d7719de753a0411c1215d461aca5ecdaae701f647c2163db03e3b. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:24:31Z), 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/SGB502502158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66905d47cadca6212a1b7aa5c1655a6eed2db707af8372f74ab8894c3b0a85eb. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/SGB502507167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fcae1004ec6a5bf15f04c7d74c41a9106c561a8871707f9f8dc7c6381e8cc2b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/SGB502509742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f650f7ad9d6be723839fb400a7ffbe46e5fb9c2e367557c03c76ca450abd59. 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/SGB502508669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x086b4f88bb4ce19439b81d7ae626c4ad76d38bc7e3ab3e14c6784ca9fbc2a86d. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/SGB502501738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb12866cefaf2c571d4e186e8d63239677b3f384aee8b9a361e82b1d59270231. 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/SGB502506736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd08bc0f3531bca5bed63bdf039c8309500f5c91f54575876e6a0bb4250c0c6. Chain 2 (Bitcoin): anchored in block 958579 (2026-07-18T16:26:17Z), 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/SGB502501486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ea49a176592f7b9e4394a421a78f82eb1f8273db7150d35e013defba9702ec. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/SGB502502004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10dd07f428e3cec194f282889e53acad4e7e73d67a52feba217a9b405764ff91. 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/SGB502504376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1c5c9b2acf47f7cef357f516c5c031c4602bdefb174ccf49eff942912c15967. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/SGB502501144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c52766458c0779f6a915d42171e0e6b797a71ed6cbe64b8597ba2cd491e0165. 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/SGB502507999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x494ac602ed8e3d5e446dbe05213247ed46f412ef3c3180930485b83bbf73b7f1. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/SGB502501542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79f5be88a250836287cf46912c8fbe6548aafa7c3456bd3de0b49c45d0628e67. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/SGW502506353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4ced8c066582009e35ff1bef6f6710627baed94e28fa20b35214869dea98423. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/SGW502507121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ef421bacd41cde339fc82d71343a073c2f595aa15779105f0b89e3a11c08d0. 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/SGW502507155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x814d46f33059333d0ab62d7d5e9e0a1abf2ad17dbb451f59ff228f7c5e0c18b0. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/SGW502509109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16b45938b55a7bfbbb12e2583c3a56b7fc868b25ccd638633429d924ebb88f37. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/SGW502507011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb713986e8eee9f142580ecdcec1529f018532bded57187a2981ba358d03b019b. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/SGW502503449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa48d5f51b90963e757a26a8cce4d18d27dd729a42400453d6ee4bb7435a06061. 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/SGW502502324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeed4dfe5d5ed6bcc098c8b6437c854d66694e594926d710bc2a76ef6a4558b47. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/SGW502502366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a70692524ff0b0d117bf7e0b1bd152bae91989d55e4c5d4075c9081009ef4ac. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/SGW502507851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x350e114aa2272c6637dd155b8121c0a90e224db5164f65bd9d14c2ea256eca5e. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/SGW502507257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc6cd6aeab90ab5aa9c59028ff1ea85ee84b51d4fb0c7a7eb1a02c8ee2b30ab. 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/SGW502501021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3336c0d1d44e2f27157a72890e1717be6586c3e4767d81b32452df71010f779f. 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/SGW502502948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f302174b7f57cb4d62b60d611e9db2c60b12fd58320687d03bdc5df652e15ce. 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/SGW502502238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b8132f2207e09a834c6e9a5f5ad0125ab1988b2e6f7f03f02cbd2dd9aad195. 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/SGW502504505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe631bdfcd4eea2d172b755ea09259a793e1c21bfa1f1a1c9de878d30d55c26fe. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:21:28Z), 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/SGW502509031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x425ca840d6b462ee8470d06650c19f782253bbe7d4f75309289ce3e8c8083358. 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/SGW502506969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x798a1451fc307ec822149cab8ca8744970a5c7ae36ca9c69687d361056faa460. 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/SGW502502994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d1365559d4e21ac549f27b038a11e2a68ac76921c672eab7c8205578dc3432a. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-19T23:56:07Z), 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/SGW502509439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b7f89ffb0992b92912a94d006aedb0af066a059cb184fdcba7349e7c87d968. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:19:28Z), 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/SGW502501870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0308b98c8ec7df97a1676423a81060bf3490eb287cc9535fed8f9de451e0f6a0. 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/SGW502506776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe734778885ebb94098834d8e5d4451a9333d1731632910d02f4d567105a18437. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/SGW502508598.