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 0xa3fdcfe9e1dcd2f5a9ca26c77803c3fa2497ed9c2a1b4d12a3673d8c381c2942. Chain 2 (Bitcoin): anchored in block 954174 (2026-06-18T03:01:36Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7f1b5533-9e0c-4c07-ace6-068d5c760209.json and https://artists.proofprofile.net/proofs/artist/7f1b5533-9e0c-4c07-ace6-068d5c760209.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 0xef6750d71b7d334a237bf9e00bf2f43d26ac29ec6f0778a44c0b600eaece184b. 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/USLD90811332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae73b318638e2ef1f08d127bca55fef25ede5c935d7eef706727dfc1e74eeaa1. 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/USLD90811333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93c7fb613de09e56e3746bc6adbdb0a9be8688a661019c5fb90a4316e16e2d63. 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/USLD90811334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1a228db1d2a0508ef3bc051e96a74768e57260fb89da605026f37185449ae2b. 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/USLD90811335.
Thanks Obama (feat. Lyle & Phil Divinsky)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5124367ee6c870d3b45cff425c341c540af9c080d4be091ae8147b39b339c400. 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/USLD90811336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d500dea1ba69f37dc02593d417a731f5befea2d46991ab6bae3bd52c44d539. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USLD90811337.
Little Different / Obituary (feat. KGFREEZE)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa91d367cf0affb2a1086c01619393e26a99e15f3b7d964c746afe33713632a9e. 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/USLD90811338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x045519905ba8f68d16e8b3d998e83d839154acb33c9f67249f76006692cd45a6. 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/USLD90811339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x610ac8a632dbb58abefd62a84392fb247da9348245ecee563148d4fa16aa9b11. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USLD90811340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x474fd498730784af62b9a8884b96c0738b5e51bc462525b7a7ea3afe46972e46. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USLD90811341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4025c2f2319726c2c25004176a9ab856b69da76f48a719dcb54f4fd17dfb4ec. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/USLD90811342.
Why Am I So Happy? (feat. Renee Coolbrith)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeed760995cf7eae5d9285052184bb426148f5b631a5b482826f42420bf877c62. 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/USLD90811343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a4d0e87b74f3de4fd86691e1ea67f84ff54aeb3e909f0756790f40d0e3fb36c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USLD90811344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x836e30a25c669bcb971f9bb133d3d23d193956dee79512222503be7d2fb4caa3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USLD90811345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14799585a29d83717b60fb6382daabf248f959213029406a59760b1f1650f9c4. 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/USLD91700865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb5e95270e1a94107211b3e5f7611ed5a4974fc8584a68192f19074eb2ea9f0e. 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/USLD91700866.
All You Need Is You (feat. Cam Groves & J Spin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c01d5b49c090346d3f6723f94967368f44ff20addefa3fada8eb8032d68149c. 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/USLD91700867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde50357948392ba211b0a43799a4b3d77b04d74523c8e9c4ac23ff9850472172. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USLD91700868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa13e87e4e4ac933360a0cd81ac9b38ed4a09f861afdbda948099081c95ae275f. 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/USLD91700869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d1e383903837e0232bdcd6a97cca173912089b0118b6604fda77137f1a26801. 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/USLD91700870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b0000226c86792b0ecea09b598b1ce833830d1b89924927a95ab8af29d05622. 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/USLD91700871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa33cf0368ba956633fc45efe9d3394e0ae452829cc235bfca5c43c5c3e102a3c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USLD91700872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e1388815c1b34fd342de1f1247bf4fd17fe6744bc4cda25094e9cacb852ee6. 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/USLD91700874.
When I Was Broke (feat. Dave Gutter & my wife)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x868db3c7637b9efa1ba94bae9e2080f2e726e8845d102245ab68ecc57e4dee87. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/USLD91700875.
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 0x39789290f73db15a4f5d4c7dd0a9239bd33c2038ac7790dcc7326284652828bb. 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/USLD90812750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe67b887567fa348ad8d3c41cdef7abcbf22b6583581182fbb4829014b955c317. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USLD90812751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc06daae1adbbb088dd003d51f06ebc8f0ccb4e34f21cec6b73e9baa1ff1ea2e9. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USLD90812756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6097e58c135a8ce7c4f9e6d90fe3c218934a90f89afb5ddc3c503feaa42e8ef7. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/USLD90812759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b3d9443dfb4d5715fa61baba2e53c3c5ed7b098b4ef2cf2725aec1a49fb8d8b. 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/QZ93L2108796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0f2465bb87730f8f7284e39b42754b32fe28b250485ee7f59efc906baaabb68. 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/QZ93L2116687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26550e0cd30f881762badb48cf4c204d163349531309d49f701724f2e56cef7b. 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/QZ93L2127565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27536333c553811a430bc6ef3476e7c7e1a7b1037501a21902588783af0a700c. 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/QZTAY2328551.
J.O.Y. (feat. Dave Gutter, Thommy Kane & Shane Reis)