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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5026d68ff6ce81b39105c7d4a2c3d07196e9cccb8775ea706bfd45816cc6bf2e. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/03ffe3a9-86f8-453e-a436-448daea2461f.json and https://artists.proofprofile.net/proofs/artist/03ffe3a9-86f8-453e-a436-448daea2461f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Game Over (Latex Diamond & Mr. Cashanova Remix)
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce16ae6498a6cf041589e73525bde57536f402c93271e2e079558bad3e75995e. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/ESA011970846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa91365d58dd1cd8438cfc7a05ad129c78801ba43cb69a995bd7e35d15db445b3. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZTAS2105163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf89dd1841907311aeabe7ea80cbe316cadc3659e3625cf2fc9fcb071cf96cb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZTAS2105165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf4fa249897b302a6449f55b34c09a5caec2c9aa0584a84fd36539cb904f6737. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZTAS2105167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc64d17dd6dc3e45d0f1b84c687ff6bf56a7f594f81ecd007300e29c14fe86f9b. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QZTAS2105168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf34133022116aa01a24fa0899f33c78fa7b99a90548a2a68f61b3fe81cfa7fac. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/QZTAS2105172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab1c39a1686d286c2181cd79f47d3b740dcce11a05287b1f7fccb04f51e3449f. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/ES6081081209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a5bbe511e3e26f0ed212d1ef14e856860aa811cfbbd90cfacdec6c8a2e206ea. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZDA72315397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4439656b50e997301c108597c03bf11549b100816e5210aa95acf7f1aac32005. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/ES6080781301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa742dbf00662aca39f1ede44629b096b3a68451774979e8bce4ed942ca26fbcf. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ES6080781302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc742680b60c2cb0efe3980ff18ca0e4055d143765e1c17bb5c7d22ce68cccc82. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/ES6080781303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d8743be66cae700c942df045450197e22325e249c1b7af5fb5474ab0051516. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/ES6080781304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94528a877f275467d7dfc85ac4edd2d8c8630fb1282a19d97918a13b33bf6daf. Chain 2 (Bitcoin): anchored in block 960407 (2026-07-31T13:26:30Z), 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/ES6080781305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e8430dd3e31fcc520eefd4e35f5c4e36f9ac95e81eb2a45661d6bcda3b37416. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ES6080781306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd6a3090c33fd39f3d4cf4b26141abb3dd157b596e2362286a586f0ffc78c0b. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/ES6080781308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af605a84a3ee8e5e2cde9d6c6801ebe4de05bb3de4044e1265c9089c3462af0. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/ES6080781309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9369fbfcc149a3643290a003f0fe662771f2d2b91eea86a21691e0cb2213a1. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/ES6080781312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de58613c641914851372f91ff2d6035a966ac7764888f4911b68a53e8d205c5. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ES6080781313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c57e4d68184ee4016dc1fc2125536108227a7275106483e2901276cf6ffd54. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ES6080781314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x068f4e688c4f9e2d82935bbfe4e17271bf8d3c477d0fb923d969b27c67748cde. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ES6081083901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f8c001cfffb5bce9d556b63142b125aa292a42bcee9abb1998222f3be3b2bc. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZNWZ2456404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f81c858075151aefb98c46d1a18aa8807b7b391c9352f97b374631a6c0114fe. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZES81977365.