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 0xa53920ff2d539395be142b92855a9d27fa77b942fdd2394f821a81a186aa738f. 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/c3c33438-6383-44b5-be8a-c48acd0eca48.json and https://artists.proofprofile.net/proofs/artist/c3c33438-6383-44b5-be8a-c48acd0eca48.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 0xce1be718737c31f06b20696848e4fb66ad8af16b188f261b5a844eda08d5fb82. 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/FIWMA2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x849c5309d0ccdc1085dde31ea07cf95781bdc58d125e1364df1152fbd5dfb231. 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/FIUM72300294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd71cfd436d4c57fa8d314ee734b5f5e080e8e353ffaaee047349a96b950b56d9. 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/FIWMA2400171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36fd81ec2b56ce05589d178e624af76ca13c1eeefcbc1379b0c45c3bcf736e32. 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/FIWMA2100035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56e311847dd0cb4b2408ed21344c576efb1d28d28c302d636c7a96371a3cb8a6. 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/FIOVR2000075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee11acf4ddfadb5211ae5c8dd5583249514507440153b93d1ffc041cff78f66f. 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/FIBAR2400191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b8fdb57c53db52dc2bc8d2530b75ac584dda86516edf7b7e424277e9713734. 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/FIWMA2400135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05750572653f94980d7d37eaeeea1b03a0f2cdffa9b1b7ca195da09bc89b198. 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/FIWMA2300579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1add968181f0f7a7ca140b7428b7e9bc707c916b15076119bc17bf4bb3bb6fb6. 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/FIWMA2300580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e821b9c91500f5fc4226a23f4c10195331b5dbdf310c12cdcb1a30b0481569e. 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/FIWMA2300581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe88cb5b8bee161413f20f78850e1017be7069f08c954384b7da6cf90a725480. 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/FIWMA2300582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a9e64114a1ec71a434ccacfa9ccea52bb3c90d464e95cad84f6be78a2949972. 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/FIWMA2300227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b081d831ecd4e8f926708a51f8b0c49d57dc5259046bc68b76e9cbff5ecf1c. 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/FIWMA2300043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x425029e22a1aa4becb9eae0c08e49164ee4ed78a2d23cc27c96b90ff558dd4d3. 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/FIWMA2200273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10842448f2aa4b4f5cca06493922ca395ce724bb0225b57f52c8ba2b86d3578c. 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/FIWMA2200186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60218c239a16890855ceef662e124e373d407d7fd0e29c137c68d58119bed600. 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/FIWMA2200078.
Epäkohtelias (feat. Axel Kala & Gettomasa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a3a9dff839a16a0b83363395b3aa74b2a1c4c61739f940438942fa4b5477584. 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/QZFYZ1999052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf713584d0cfc759b0b51a3a1a1f3b8a23f2690b7d96014537fa53746f4115242. 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/FIBAR2100181.
Million Dolla Smile (feat. Pyrythekid & MD$)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29cfee48dfb0c940cfe091f09824e9a9e5c453a11f33c450de0cfc320a4adb83. 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/FIBAR2100183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9994669b4567d55b2ffe58126790ae525858077bfd5d037793eb0b6007658890. 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/FIBAR2100184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7504c52c7e135ee6e5a0b934ae1b285abb4072cff0160a8d9267c5c35142ed84. 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/FIBAR2100125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ed60de9fa1e349ce165e4bdeba474a49954a56d86c287781b611e5242d4e6f. 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/FIUM72100341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7648ef32c2ee9ed5b898a4b6b5777411d4a9c1211f63c8e449da32cf7ea22e2. 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/FIUM72100346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a48d1846c41ffacf5ae50f042379787d4220b75d7bedd126c19bb674bba695. 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/FIBAR2400461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a77c0b1c72220abf4181d6daa748cea638b95ed9eacd22ec3bdfe4ae8612be5. 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/FIPEB2100080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09e0d45b73ee19d7ba0de37a3018db6b43e314ae0dc3bfa205a4c61e2324128c. 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/FIPEB2100062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aaa7de80f3baf18bdd60be256dfcec097975d3d821205ab3cc3818b971554fb. 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/FIPEB2100081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e0896ef08e3832d3b9f8bdf9f3613862e1af28c8656aad8b27b2a7c3ce972e2. 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/FIPEB2100082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6043ae229c62219b7474f3da3dafb17139fd2464fd50415a2726a9d606e67a87. 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/QZK6L2102019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6390107bbe52ac6e8572abb5de73dedab20a6d4378123540e6e3b575083f9b7. 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/FIPEB2100083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d7edb8e14fc7ced4bfaf87951cb89827802bc3532da0f24e6483277c8e4d5a1. 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/FIUM72100182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a94b2941eae76ab38919cd5501be88163339feb1a5b8d7fcd0549739db3777. 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/FIUM72200167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x154f64298d8b5ca480e2fadf09750e9b0f18d588b5b7a1c97ea5f4ebda0eff77. 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/FIUM72200205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba4cb4e677ab59039efc3069e22605a94d7284105af9db91d58d02a6e21fcbe. 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/FIUM72200226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10dfe180326242293fcf3178af92304ed66faccd5f6abe424c933e6e7ed0f209. 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/FIUM72200227.