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 0x3e940f12ea1132dea353dd28f3aa92989bc860a3c9150f2f11b08d1c46404b01. 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/4a636a24-bab8-48c1-8817-973d31574b14.json and https://artists.proofprofile.net/proofs/artist/4a636a24-bab8-48c1-8817-973d31574b14.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 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 0xf199e15fe74c63acda061393a3fd4a74bcda2e249fc1b8f77d05c74047e55776. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USJ3V1339239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63d84eeb954023d15207c8cf5f7dce4c85fdaeb1907c5d3665fd39c40b553b41. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/USJ3V1055265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae2c31b3258a6fd164603d481bc2b6fa401a298d2522f22293a20e1e3c583c64. 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/USJ3V1055266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3e8bb6746e45008e3436d4659de780e3e9f691c8b2b1b9c99413f58d0ff6f5b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USJ3V1055270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8749539219b63e0ede42ecfb377417d952e5442b604e4003c99795c41aca6636. 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/USJ3V1429607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a5f9b3d70b63173cad5c6654b502353b17bff37373aa8eb531cb28e5bca5535. 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/USJ3V1429609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5325867cd82887b47d1c91e068911cb61d3c75d46995d0eb4ec64b267c51da72. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/USCGJ1800956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e2130b882c00969310f5853bf9f57a5367601d67fe0c83626275a0f68b6f0a1. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/USCGJ1800958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x392a3d949ea98ee95a8632f15202e439d58121057b5943f44b777adf29c39134. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/USCGJ1800964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b4798428dbad2ea7d7214a3f40efd9c4c06ad5a5ed98c064986d0254583304e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USHM81686432.
Dark Side (feat. Lo Key, Myzery & Kid Crusher)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6fc251c907eb0e8bdb7851bf6b9a108deeaa54c21f0234223aac6e9fcdc868. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/USHM21612315.
The Creep Show (feat. Twisted Insane, Mastamind, Kung Fu Vampire, Scum, Kid Crusher, Project Born, Damien Quinn, Sutter Kain, Skitzo & Bulletproof and The Fool)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x640679ebaec66a004b6ec8152051443d7d4643873f9eefce0cdb47604be0e1d0. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/USHM21557681.
The Descent (feat. DJ Clay, Str8jaket, Kidcrusher, Jrumma, Project Born, FamZ, Skitzomichigan, Zitro, Hard Jawz, Doc Gruesome & Stray)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5db31de2d37ca9289c080b516e219b9ae9620940aaca3fb04bdf610d6f1a6638. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USHM92246872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e780e3c97173a4038d3f8b1a41d2ac1f043ee7731e0fece9e216c7fa394975c. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/USHM91343263.
Maniac (feat. Kid Crusher, Grewsum & Mr. Grey)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb86b6fdf4a36484038f96e0239378565149c28414d6a6b2122049c1f179b407e. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/USHM91343284.