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 0xfb1d0c6643e4cecb46ec4cbd57e801ddde94fa3f8d6427cca4bd72f6b0fe899a. 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/2f5228b2-b502-462d-b4a8-deb5238a9fc1.json and https://artists.proofprofile.net/proofs/artist/2f5228b2-b502-462d-b4a8-deb5238a9fc1.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 0xa8e1c08af815b03ec4767d2acf00679ec2c973196596b06988c4ebcaf9b4a976. 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/USUYG1227249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c7cb0162474dc95bd25f0f7550269018b44d9ee677b6de067c48323b2cbe3a1. 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/USUYG1204257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x409e4a1ec7d0f95c8c8d3c40e095820ac8a3ec71b35f5c53fe6f856702d18b64. 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/USUYG1204263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5245ae50cb5dfa218eab2c11aad8b6d935ae5a56039d55a21d69385d6cd5a832. 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/USUYG1042058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf8bacb78e49206ee810bad4998a3bc2a27e740882ebe77a3c0fa749b804fd6a. 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/USUYG1042061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50bbec97d2e466e90199c290f94c4fd007da1f8b1c5b7a74d988f600078fa494. 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/USUYG1042062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x642ada18bb0c4c8085d87cd9ac3cf1fc5eda867a008658a097571c38e63b0592. 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/USUYG1042064.
Keep It On The D-Lo (feat. Mitchy Slick, Compton Menace)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca194f83bdb21493d60e64a4e90fc6f28634b2002dfb53c597554a0ecc00af02. 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/USUYG1042066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c7dea6ff963052375e3e539e5a40f3756499406ba8607e468fa0e41a7ef66e. 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/USYVJ0910052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba1a90a0213a4e18dbfda707e3005b3a148de199d4f84cc3ca6e191045ead1d. 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/USYVJ0910053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59748dc5a38dcaa41ba5fd932983bd5f7c2d2616b6777fa13a51abd7d0705db4. 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/USYVJ0910056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x847f6174b70334b58b18d483b2c922ddc48b56ec2a1726930a2e5327e859cbb5. 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/USYVJ0910065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c163dd753d309656bf3f5d3a5cdf2e6e4035af46c70695bf20abc28e8686427. 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/USUYG1541701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150db8049d5f4581fef439a54a00e2c6e49ddb454e55f8f4b586186b78ba49ed. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:55:34Z), 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/USUYG1541017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba935c59b7e9ab7096e7b9c95ead27ea89cd1d52bba759525fd5a28c7fca7ac0. 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/USUYG1541288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3678b36c50f57376883dc00206ca92c6804e5dd865b0dc50d234912fa8d4d54. 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/USUYG1529056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b6754f3ca586389c03013c0216f447518c124a86671402b55398fb1193a720e. 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/QZES62379104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c5da54c8ce4d3edec8877c13a1e7f94aa603d3567101e6a7c4c9b7867f5e610. 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/QZTB22207090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4670696d228e0c72948384db98bd00d84937d8b017f4d23d8461576fe2dab5f. 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/USUYG1286078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a3ef432669009be3631c4073969454288cf4616a5ff20b685714a83ed02daa9. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T10:15:33Z), 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/USUYG1590721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x039fb4bcd204345ce4519af68ac4cdaa4b108718ffb4ff32de52d3383e607aaa. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/USUYG1589679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x773448aa07e6ccf693bdf469cc5a72b9193f8c539584bd67fe998a019b11045d. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/USUYG1589675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7208b44d6e848c670c58dfb6b31279a1b11977e242986c30f83ac4f3396a93cd. 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/USUYG1589674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd578cfbe51a419cb876ba62684308d15cb36aade302d43a261fea5879fec10bc. 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/USUYG1589677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc601cb21abbc601b031172094a3c57979590c5129e33586bdd86a24a6a61a7e1. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/USUYG1589684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab6768d6c910d39fa99510280e137601a987fcfe718e520f8861afa321f98925. 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/USUYG1589685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd77da4791049862f22c2df9cbdfccff2f20ba4ca43e76396fc48b82e9e824284. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:38:39Z), 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/USUYG1590728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d0d587150e43f90562c11f1123fcd7cad763630999a8610d2afc91f96d98b48. 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/USUYG1591116.
Boyz n Tha Hood (feat. Mozzy & D'Barbie)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aa1847ea097906f557ec39a965c4664985c713e021564de6fa2b2882635c402. 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/USUYG1552106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c163dd753d309656bf3f5d3a5cdf2e6e4035af46c70695bf20abc28e8686427. 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/USUYG1541701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc08607d3fa78096962a7bb0513c91444d8da25aa7fd4855fa654196615f258. 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/USUYG1552109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x425953b50672bb758c706191d019a51df02160a9d457a2e568862fec766fb89d. 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/USUYG1552111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x581cfd640c982df669b4526d2d3635f84ae332987bd9c0f7e83c2c10dab64e0e. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:35:32Z), 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/USUYG1552114.
Not Allowed (feat. Mike Sherm & Shawn Eff)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b3959dcd05fd7f9ed47f6caeb7f0111623b648239f93e1a522f2f53422e1811. 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/USUYG1552119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55dcdcd79d16a7cd16efba5be753e5b8a88655d9bd7a57a9288aca0998222404. 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/USUYG1552129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa5e1e027fd4292262ff59f896725ff0681631ef8cb63d3c3b176e48681f8efb. 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/USUYG1585224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3eb414534b94eee48032792abf105108ce160eeea3804b3f6a9491c154e9e3a. 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/QZWFH2455674.
Tha Team (feat. Rayven Justice & Baby Gas)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534ce63d17c20a49b7e0c21af16fac446f0efea020ef50e7f2b13797c962a00f. 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/USUYG1561661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f9f598b6898c4b790efa645bb5769dc28d077c192daa69d98465e2b9297514. 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/USDYP1010144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf9e003b3b9074e1bcd5a54566bf9f54f1a3036454106c627cb10a9864a41361. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/USUM71416471.