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 0x8fc5381e10d1d9e7dc7001b8d41db185927e2009ade82de4c69fbac33c702ba7. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2803d9c1-9d3d-44fd-808b-8f69ce54148d.json and https://artists.proofprofile.net/proofs/artist/2803d9c1-9d3d-44fd-808b-8f69ce54148d.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 0xe8f40964868242364531659492ade6d6e197ce700feba293a773c4bee6433e23. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/US83Z2213694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9475c6aaa8f893bef4d42936f725aac3f7d78c31dc80d0d2197ec97e48682a8. 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/DEH742001184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe810e23ca509903d9b1fdb5439dd8baa873350bd5bcfbb86d44d915264c0a670. 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/US83Z2490399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c5b3e94d8bd45b02e48a00b8a72c3f00bf0376c06dcf5ab4d91ec9391485cb. 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/US83Z2476618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x301935b29fb44e44ba51961162b3336853181527f98f601b5574dc1bb18f4444. 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/US83Z2490419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca3fc7cc13731904ad8d55d52e3905448f52ea40ae61f94ccc43a10d923cb9bf. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/US83Z2475195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b61eaf144ff690b32b9b69cb0fd2aa83db283c48b6dceaf05a663be0bfd6c7. 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/US83Z2480243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0887f62c045542d165e6b48fcc884be87863dccdb0eb35eec0ee9b4940d99e70. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/US83Z2496054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b61eaf144ff690b32b9b69cb0fd2aa83db283c48b6dceaf05a663be0bfd6c7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US83Z2480243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f4472695cac8135f0a01f11765c0dfdde66d0ae6c894e43bca812b5f016bb0. 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/US83Z2493085.
Mangalam - Ian Hansen & Sergey Nomad Remix - Mixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3fdb7621d8c3db557943056219f69892c33de8ae6fe7829795c5c69da0ef9e9. 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/US83Z2337784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47481e45f2696a003fe82b96b419410dcd0157d11b56544378315bbfbbbdb3a3. 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/DEH742050646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc97713dfc04293fd7ffc167fee0c01c40f0e608bf695800c8061dc24985200. 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/US83Z2120770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc37ca5d80be875ff72850c7540275fe23e03302cf9c0352c9fe6e519df88ca62. 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/US83Z2238035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0fb39dfc771fb1354746581468da0c16a9b9eeb341bf67de0ad1f9d6a3af5a6. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US83Z2310465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f59c76050b349e868c0bf3fad1e4be3c900bb1b066e02a0e61c5d1f67644345. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEH741909313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c3f80175fb7862a4191e742190bf2b2c55354f1393e7c1c927352bfd653faf6. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US83Z2475617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c30bf6ad8a00d2c77b8c8c2e5911283560f7e1f8abc51537c81b973088ef7bd. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEH742157788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da2cc3f240fdc2015bf9102b16529b7cc74eb2b7d2317dd28291d320e1671a1. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US83Z2350056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a9ad4a6b6e69813d1299f7b65e700165f2f643c52ede47629beeb37a9ece2b. 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/US83Z2308186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe248d60b907a0fb35874164c7073baa452c63628230ecb0c8761e3cd8530a0a6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US83Z2351202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac4ff1f4629bfdd79110524058e6624f3b2ad19e120ccd08b3ee0a3179dcd4df. 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/DEH742008551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5b8e0bd6556f08907b227a94ecfe733f847e027444091d6897a3b64c8422e94. 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/QZAKB2363467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73efa7b3cf26ba754f6f10f94e5fa1c90058ef1525f4106ee162d46167aa0b52. 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/QZAKB2342774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc59bddd36b83274ef87db7604c45d7cb8d8200bfd1aaf3abad5f1ac63241df3c. Chain 2 (Bitcoin): anchored in block 957246 (2026-07-09T01:49:50Z), 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/GBSMU8585478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d2a498c853e22bbf6923fd3798b682870fd6c23590e1883d072c096d2158b0a. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GX3HH2179405.