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 0x3cac1048edd710409b09a4e3de9d478fe2acccc240fc2f95df866e5add961ea8. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/229a6c0c-d4d2-477d-972d-a0c8e04ac95b.json and https://artists.proofprofile.net/proofs/artist/229a6c0c-d4d2-477d-972d-a0c8e04ac95b.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 0x22f0a22cf77b15fe27d6442628d27cc3e82a7487a46f7ed878468e993469dd56. 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/USFHW0600323.
Lion of Judah Riddim (Zion I Kings Riddim Series Vol. 4)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d70a68c2fe2eddcc60461834e599364fd0a41ebb01d1cea0b4a4e53f4f551fc. 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/USFHW1512345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c75786473f78ae75fa68f413b7161f0b3a955c38951a89bae445c3892bf606. 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/QZPYN2472088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa60b149059a14762d896d985fdc6bdb943d77c82d7d959c833e393d5b0d4f847. 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/JMA271900528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7863a0e0c5f2f7e9b4afff4f6dbde7af712592ec9649c24df4a4ef2713893f25. 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/JMA271900530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c5274d8563d14ccc7a7e9dde1438c07532dcf5474ecb341d2995ed4fd665a4a. 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/JMA271900535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb25040d97d3bfe613ec63fa59a3f8e9f6410334bf47e2663bf8d6dc762ad9227. 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/JMA271900537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddead720b041bb621fb218711a1413bf028dc9d80c7dba2d3ceff80fd97ee435. 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/JMA271900538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a635ba52463befd4e39345c49f92129ecf0e330288d512f62948509ab5e13e7. 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/JMA271900540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316c2a6d48e6b83bf95d68f23f023e1eb856571b083093595af3b21acc1191c4. 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/JMA271910539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd55e0a4027105e5904cbf1094ac40f5e6d68ff46ec40716d56799a03ec33e3e0. 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/GBWUL1911311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6bf8e4442267b51ebb67f29fe7078e9d81ee775638e8df11492da861a7eed6f. 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/GBWUL1911312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a24fc65a41e2df3dd1776ea7dcf606d665e98537a09a4c94a20e482f435b1d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBWUL1911318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89edbef755953e84901653055943ccf812adb1c8048386f9449dd0f64fe2b2c5. 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/USLZJ1987809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a77681b6d7c1719dbef44167e20bea95f875e38a55535b2fde1a1528d3bb8a9. 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/GBWUL1913412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x744ddccd2afe048a58caab597590ef111a909e8af7c6af04da9b70d8a69bc2b5. 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/GBWUL1913414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb09f135cdede40beb2b6d8dcd0fa21d68b839ffef8b5d591b8dd6ec0bf805d89. 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/GBWUL1913419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd29701371d6b35496f7daf3f96113b6f2bb113b32d40751e2325251120092ad2. 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/GBWUL1913423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f0833629f3aa70e21f1e64b0770ec5060fb257c5da47d74a05d405647954b72. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T16:20:51Z), 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/GBWUL1913426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c91bbbf0f7c89693eb77edb99db60b3fde45b1608333cf32761fa5ac075349. 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/GBWUL1913429.
Dub It For You - Just The Way You Want it Dub
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0859ccd56473b8dec489514ff3d49fe1181db2dcfae05f48c8d2dd4f3937c872. 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/GBWUL1913432.
Dub Thru The Night - I Grade Live Dub Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x414843305d9cc02f422190a55c8f0cf177374f881021163564c539613c19386e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBWUL1913440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1648956c9b699cd2e1f440dbbd72b543033b538a4b27abdf29ae3ff523369f17. 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/GBWUL1913453.
Eugenics Ideology Inferior - True Lineage Dub
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8caac3da34a46c8ae2405088065b943da3cba9a2a29562422fff1b940c5447. 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/GBWUL1913457.
Warfare Reveal Dub - I Grade Live Dub Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1be9a4b66f07cb177b960085a96c64d15da41098599da1cfee0bf990ab875c8. 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/GBWUL1913463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeafa937dad11f7bdd737cb93822f0f43a8045ddfd343cc103b438318237208d0. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBWUL1913466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e55cee73ed6070be3d17dbacfdd1724fdc4a6536ae1132f273cc5da9e15db26. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:03:17Z), 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/USFHW1300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe13150555b2831f629b2887151fa28528b843d5220a27351c75364a1b30068a. 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/USFHW1300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x531619d7c32e60eba0e05aa9e487ed39fdf4126a05b22ac615a992b19d4a8034. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USFHW1300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1665498e0efd720984564df303dfff52b2f9afffe80014d7c0949ab88a002858. 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/JMA271455747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6862f45d15211d180befa465165f7e147b8123c93ad00c866368e9b3e141c95b. 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/USEVN1600018.