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 0x25581a81369a7febba665843aa3a53f709b613a43664bf13bc76f82db6774057. 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/5a7865b7-13e3-42e7-a32f-76f992c28631.json and https://artists.proofprofile.net/proofs/artist/5a7865b7-13e3-42e7-a32f-76f992c28631.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 0x5ce3beafd2e6545bf31621cb02f27db3ae7a35e6f62038ce663912286ddb8c69. 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/US7VG1734251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe6a1c3428239d0d6402681f7c86614eb595666ec441c7b8521bf10c044eb87. 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/QZNJW2171700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f825d928e9b19348d248108c47f994870006f79e8ea8183f26546c4b5f3e338. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:57:19Z), 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/QZNJW2171701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa41e7e6e4ee0c65c85037e6aee41facec4208dd124806d0a68d060ce36d36fdf. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/QZNJW2171703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98aba11292352608a76cb7f87e36106fa134406d5c1a8d099dfa4ccf58290474. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:21:51Z), 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/BCPAW2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a462ddc4c234f6c5fb987f186d770e2618b7fe25ee6aa2e364ed71d5d810431. 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/FR96X2328100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cf315d7f0806f3922d7b2ee6bb68624b1cd1cfde23a9aba807196b60fb09e01. 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/FR96X2328101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa14d00cc62c266a7e4a9c4c84908333ce39d76d47acfc28d1d2ba2698051613. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/FR96X2328102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0aaa02f701dc04257fb7665f677950e4c1f853a405dc496a86847f24ae4c15e. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/BCPAW2300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d19461bf147220047d133356dfbcae630e39fd7c20c01f197840e624070c07. 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/BCPAW2300036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed2654686df0869ce78110a102fc7c586feb1acce4d2e42fa23de38a2ec8e50e. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:33:20Z), 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/DGA072384008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b97b1bd2eaa8d309d72d1d948b4cd96ffdfdfa39cb4596c300cd783f1a9bc22. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DGA072384011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5cf3f7afd7838114a8f43fb99f16a5ecb1a44dba4e2eb3c5ec4ea108f6ccca5. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/FRX282417683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc945922b24cb0c94562f083966b276e1ee7633fe69f82064819b46b7b1ba7c97. 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/FRX282417688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1929f0b14866093b83cc567ce0dabe2874e2206f5322388e97662391566e480. 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/FRX282417678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93313a4c629c807738acf25c145d868438b832f9d78c10c9ee791ca838f213b7. 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/FRX282417679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5cf3f7afd7838114a8f43fb99f16a5ecb1a44dba4e2eb3c5ec4ea108f6ccca5. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/FRX282417683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc945922b24cb0c94562f083966b276e1ee7633fe69f82064819b46b7b1ba7c97. 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/FRX282417688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x951eecee940aad12b01ce7eee99513f63acb4c7c94467ca7f4b55291725bdb7c. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/FR10S2587930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eecfdffb3d5775d2a19348c37c9bb95e9ac0ecc97104d5b3b2ea8b5f2f62934. 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/FR10S2587933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d65870002840f89aa2971f4342dc24fae23cb7d3f38c20b97b0a8b18f27de7. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/FR59R2547676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dd05dadd3cbad5cc0a8eb16ee4eca5d4671febbd69043ca957a80d161ad49a7. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:35:05Z), 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/FR59R2547677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23d34230fae4cda8c31ef39c3488d10e6d132c17f3fa63bedcc70dab5756b44b. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FR59R2547679.