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 0x0ef74e7fa1e51a6d1f82a4c02a61ea2bb7592cbf9b970f5f738966c1f1d4d611. 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/9e038866-d65e-4eaf-b005-e87bd16d3466.json and https://artists.proofprofile.net/proofs/artist/9e038866-d65e-4eaf-b005-e87bd16d3466.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 0x4c72f2d5efb6fa6e297274801476f57aa34fff0846423b417c99415169ebedaf. 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/FR96X2289498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bc2bb9e09aec4267efbed3eef94e62d12693ddbf1a9e5c695446d5cdd612efc. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T08:35:19Z), 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/FR96X2289499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d585a37233e8a9ece5a738dcced535894b52ea5617d94a70f3b777eb3f3cc1c. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FR96X2289501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012930419bb07b7739604ea771f38e99f25eec62ee557cb30d8f49bae381f324. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FR96X2289503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdda92649fd6bd410bddc5e8265585efde5c5cef5f2426af41e0a4024003d1cd. 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/FR96X2289505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b48822806958f856269127b8eb9feeb782f079e86fd5566961929556ace4923. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:54:44Z), 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/FR96X2289509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d2f6dfbe9e9179149513471d1709ef5ea172e846781347bcf86e75c299b0eb6. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/FR96X2289510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d6b063754c1a6a16fe04554503c34aeec92ba6179e1e756a5ef47b93b1681e6. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FRX202200808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe64dadfd95343a64bd37af069e5efcc9b2a761f8a0166f46c9480e0aa57fab8c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:43:03Z), 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/FR96X2293516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x474f317f91b8b6ffdd13ba319c060b6cf7c7477a8623a856c0e30735cff911bd. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/FR96X2297897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb768151e26d81de460867b1c285af247972b4420e4f666838bb6e51b281d90d. 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/FR96X2297898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7529a7a10d7a9df67e21d487323632575396d7cde5c8462c24af018e2a7869da. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:57:38Z), 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/FR96X2297902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b6290bfb2eb7f0dbfc0980d7dbcc1e26bcad460aeae8bbdbb026433561a1ea4. 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/FR96X2276912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ab555cdddd3815ca3f2a898c9ede6c7a9b27b48941cc4ba568e2d1ca3917e01. Chain 2 (Bitcoin): anchored in block 959034 (2026-07-21T16:34:25Z), 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/FR96X2276913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76af207cbf92e05287eaed0fb168c7df7a170671f5772096ab9d53ab534b3fda. 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/FR96X2276919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec9cecf065c86374e40cf57d1bbc3e01b171501860e2c699126c3137863c7a47. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/FR96X2276922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc45e53ac00a1c0a0ee36104faa418a77126cef4575e15a0f1aafeed5708f69. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/FR96X2276923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94103294dbac408391fa48a05d11603f4eba11ac9e51288a184901dc036da9ed. 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/FR96X2276936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c11ccf28b14d56f6c506fec5a459acce0398ad5ad777b19a48c7828f5c3ca66. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/FR96X2276937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21e866e16abc478682bbc4c31d4ebfba4685b65b0bf805ed0f0f5a327958b2ba. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/FR96X2276938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae280b94ca3ab2debc9a0f0fe586f7dba05c52644be139120baff2d21e50f2d. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/FR96X2276943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x646d28dd9f77fdbf15cfd522e90381a179d7092e576a6f4982c87c87fa5b581b. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/FR96X2276944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec5bdce2b0dbb24326963824d7ea866ae176895ddd4fe25883bfe1d1d3cf77ec. 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/FR96X2276948.