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 0xc3a3b2d87c344cd7f66c879237df019f2e9c32ffc327449ea64a98e3c545fb78. 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/7b75b911-58ef-48ba-a02f-c57907ef27e5.json and https://artists.proofprofile.net/proofs/artist/7b75b911-58ef-48ba-a02f-c57907ef27e5.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 0xacd173239832a079e7279ae2677f29e27aec265a4f98e0a596ff05f1d9efe7fe. 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/ITB841100341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x659a0206be839538d76e93d55eb819dd46d80ba143a24bcaf5da54d7e98223c5. 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/ITB841100342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9202134e95667683090c4dbd90f0ec29b3de7f9d83ef101304d84222dc338d1. 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/ITB841100344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b2c70bb5a9b6504691ed8c43bafe46d0b069246e33333cd1f4232e901c4256c. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/NLCK41037109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59eabf7f6699a205f0e648c210dd018d207650fb26e8f83f0ccfab361aeda0d2. 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/GBKQU1786032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b66cc0396cb5c7530e674e25f471b240770f79487ffd135c6af4fe02aa8825. 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/NLCK41047713.
Chaser (Monkey With Shotgun) - Original Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeeaa556e04ba7b35005f485cecc274cbc00a3c063d362f57a43d58a08f4866f. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/NLCK41047714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x196a68bcf76db1c58bae99b5b14ae9c9145a0e6f77d45ef67908fbeef7046fce. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/NLCK41047715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16feff519d1e5115a68ddf16bfd058c85b50862b5f1981d97ece9e6c15e452c0. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/NLCK41047716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb49a82369fef18323ba0f2633b1438bb1d7ca6dfc8d6585262a904fffa2e096. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/NLCK41058477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd509d31d4e96f5091b2d3b16d3bbf0ba66d212f89ece53ba34862b8533d12943. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/NLCK41083713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ed6ff6eea59ded47f697e3977c18adb825fa012a924a7f203c3ca7edb828451. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/NLCK41083717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc9f61d11e1d3c4eec2135d277b711a39f55516db2cdcfa1448bc82917fa4124. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/NLCK42217247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40b06a6bbaf5a89c925b5b2ad62794c19bd3c633d7460281ad95f31f0cdb348e. 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/NLCK42217248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14aaa9d9bb74e02d4e2d07fae13ba1c374d781b515d864e67de18cd88dbb3ce3. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/NLCK42217249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb05ca92ff930d63e1dbdb04386757abbe6c68ebdc1d9daaeb108f6d14de5095. 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/NLCK42422498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be05ac5f9acefef246eac8195a192f3f60e71c1107faba27d98fa2a90707fac. 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/NLCK42422499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d102c69ca61ae4abb1631de3214fb4e39afe45821dbe3ea666c883053b1623. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/NLCK41047711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x963c8d10bed3a990f6764f3050c58403968201864a3da68a96584df733dde872. 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/NLG421500042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0041334e80912f575f038c82090d4aa021301f26efd56b9f11d0daf56587f7a1. 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/NLCK41067453.
Hardshock 2017 Mixed By Igneon System & Sjammienators
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x963c8d10bed3a990f6764f3050c58403968201864a3da68a96584df733dde872. 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/NLG421500042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x963c8d10bed3a990f6764f3050c58403968201864a3da68a96584df733dde872. 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/NLG421500042.
Ellen Allien pres. We Are Not Alone, Pt. 8
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa06d6edab636a274f39c652359a4b702837a44e7afe6b60fbea35549778d8f. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/DEAE62400060.