Pariisin Kevät (meaning Paris Spring in Finnish) is a Finnish indie-pop, indie-rock and electronic band from Helsinki, founded by Arto Tuunela in 2007. Pariisin Kevät began as a solo project and remai
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 0xce90e30b4ceaf6c376a7c8ee9e24276cd6a9b5dcae5d4d3af4c7ae9eddd03b12. 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/5496ad4c-0818-4d1d-8006-d0bc6e590690.json and https://artists.proofprofile.net/proofs/artist/5496ad4c-0818-4d1d-8006-d0bc6e590690.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 0x2769fc2a93b2a8e832ee62a605e794785c821be5d1cf71ca8c87358788a4a91b. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FIBAR0700180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff832c559c57bc6b8c480ec56b85cada5c358ac19bddce3183d4c862ac5fcaa1. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/FIBAR0700601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9820ab3d0821639b726f07a31aacf9c00089b73c5894e4e244d7b5fb69bfb12. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:07:56Z), 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/FIBAR0700599.
Tuu rokkaa mun tanssilattiaa (mitä sä vaiheilet?)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27edeed111230d3915ee0ed0d2bbef441b10ebf005834bbf8b6304caa0a3b873. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FIBAR0700602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b92de3da7c4e8ac4b361b2881739dc32e4b8f2f6c7cafb0ac5cc9b83780189c. Chain 2 (Bitcoin): anchored in block 958724 (2026-07-19T11:19:01Z), 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/FIBAR0700604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb47e9a71f1eb269eb9248087389a4134e6b33e0e5c3ae49e14c7ccd59e822d82. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FIBAR0700606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbeac912f0221dded6debac4c5912d4f6f541e561d71dfcc43f687f4a6bd3611. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FIBAR1000105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x223afe55d29f16ca7eacbd41ec58d5824c2951191d1702d0d578586f05bb9736. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FIBAR1000113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6858edc0bbcba9ef97ea0656e94011f03f123c0ebb9ca672ef3b6c8e77e3db28. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/FIBAR1000112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b1f3af201bf3ba8ba7cfde535072471397c16d274896c00cfe588069f271872. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FIBAR1000109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf445c2f6214e75271eb7462f560930c658b44f97004a5952890e7548f2cf71. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/FIBAR1000111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc2686724df2af5993b0e02f0821d9808deee4f3ac8e95220990ed7d495b513. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T19:56:49Z), 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/FIBAR1000103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd82467e9932df70ae4183f2407de654ab22f726caf45737c0d22278035d6f445. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:46:58Z), 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/FIBAR1000110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf613433b485e2f80257d3f46ef6ce5d5c06f1ae9144c301bbcf8ecc99760307d. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/FIBAR1100402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb4b00c8f808702d501a9ada0671a20a94817874d76568b59d027452582ff518. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FIBAR1100403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb212a1f7020f7e76447df624ac39ea705a0e985341809be6774e12800cc8075d. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FIBAR1100404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1e8e9f34e02cec8aa934888c1d4829a73ce1dd289c90c1607292305a7ffa6c. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/FIBAR1100405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a92feb6cebc4c828bb60dd4c8422f8e2edb86c3f8ff05b08935ecb7cb0b628a. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/FIBAR1100409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x793ef9077527856aad07773bad8b02d157a4cc8c9c0a3877fbcf9bac93ee44a2. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/FIBAR1100406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8d0f77fa394caa4198c5d6a4d7814a928b11c5bb760e8b7b641802f1483d1aa. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/FIBAR1300287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc4f4820fe290ff2e1b893a0b3a5ef34cf13d4a1cc28ee2672bc0f3889c60d32. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FIBAR1300288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a5610af50cbe448b93c4346f0bab46438d17a8c4fe8c55b70e02497aa60d5d9. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FIBAR1300291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e8f277612103bfedc8736bab09a5c84fc269eb50d377b6fb41d86a4a88c2b1. Chain 2 (Bitcoin): anchored in block 957583 (2026-07-11T15:53:17Z), 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/FIBAR1300281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05244ba22954a9c1dcf0f753fa0e27deb2627b5348564faf9bb2d6c3e1acf0a. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FIBAR1300292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1333c22931b51328f2da3870d1b0e82d8d1b943cd30d51fba8c20ce809d2ee4. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FIBAR1300293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaddaca743d39b779995c484a614a88a2c811a7e7bc62ebd3038d2db93368650. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/FIBAR1500091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36a9b604024ce29ae5d00fcba5527e060b575e2feecc998002bebac91e162309. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/FIBAR1500092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb70843614adbbafada1a0c147440bd07d0f2b7a5d5f9d6c0f599ea69de026d9c. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/FIBAR1500093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf08bd767f9b8f6fda81c9994d4fd063ee8278fad3d685871015ac330dddbbf7. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:05:52Z), 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/FIBAR1500096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d91440c6547f63bac90c46c8ccd36fa9663e4e76f2037a5ae301fb40eb6c318. 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/FIBAR1500097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd1f4803cbf56f261b17139ee4046c057b4d4eca1319e07ba8978e7dc162a81f. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/FIBAR1500098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b1339c4babd29a455780df9ad06785dfb0046fa493f1e9ac1a791012c2e127. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/FIBAR1600682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe995c3091251dd7bdbe362eecec8265f6211e1cafa9ede3406d7843e264033e5. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FIBAR1600559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4500fc3d1e445a35d0f025adc5b5d29c27044d24b513e0261ff3ccefd441aa88. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FIBAR1600684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada12f63571ede985db8850f585d3846ff4a80e5876fb7f59e4694c1805f7d4a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FIBAR1600685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ccaabf12338e56c83c16ea6c5e4819f9934b8a56c2e0eabda4324c3130127b. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/FIBAR1600686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ad73cfc80ba53fdf05ff1fd4174b239aa93913c940977cbeaf64b1673fd4d4. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FIFR51900014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99eee5802a3cd10a7896796ebbd32b7366831acb9c2455cd2ca24c86ee56ebd0. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:43:55Z), 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/FIFR51900016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb989605b99b6a1f34c562ca173175a185ce5dcfa0179550ec9c8710986b3b470. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FIFR51900018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ced3ad6ed1396edd691a4c7ae1bc520dfa9a341824a97441d8697a0c0aba09e. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/FIFR51900020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x837b9d71bc45accf12f26bb63f44dd98ad1686206476f850d96dc44de8569ad0. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:55:24Z), 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/FIFR51900021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x573c0530e83d3b2f567ebb44450c72cf188d01f1e93ba7dd907b822da2297352. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/FIFR52300044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d0db51b13ca939ff9e27311384dbf145859dea7366ab3c2b941b06dd2560f2b. 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/FIRMX1400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54e65c2b8873439e59ced8fda4f58bacf75fe6d258cc3b10dacea2504e34eb35. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/FIBAR1000465.
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