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 0xae05964eb964cf1c3627b2d0014d1ef94bb205ac40b65b79bccbd7b8577183f6. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3af9afbc-4aa9-4230-92b4-772009b9b903.json and https://artists.proofprofile.net/proofs/artist/3af9afbc-4aa9-4230-92b4-772009b9b903.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 0x1d0405391eca695c37487b491ac49a8a162a14b16ca2c548e29ce39573fd1d64. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/CZA100400165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b6d3bb76a3d569ec4155c65b0cc247a1b9c6ddf88ce4f66c3028bdd35473ee6. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/CZA100400166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf5258a7415ccb0486494d054baf61fa3d7f0dcac69938b6a8d536bd35d1e6f2. 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/CZA100400167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b9ddaebbfe885bb19e7102a582a7b868fb49d51d5dd71c360db3bca2cb14b1b. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:32:07Z), 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/CZA100400168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f723fcc48c331200b86c3f79ff13876701edfb92e0e8a1b09d4ad7f5deaf7bf. 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/CZA100400169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e335771721ecaf30a74b64666936693a3505eda0728e567094459465a5af29. 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/CZA100400170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa344217b6aad783223fc1b25ad76c7c7659f14a7471314d9750d9b567b561f0f. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/CZA100400171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9238c40eb6b95a45716f2d9178f34216f50b13e117d4ea7af4776c4ced62d1cb. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/CZA100400172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61cda097bcd92cf36536532dbd9218ce812be2e754ec1f671863b3957be27e4c. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:37:55Z), 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/CZA100400173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b78315077f40a9a7179f0fef0b207c342de9365aefdcfbd81ba03eae695b56f. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/CZA100400176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea3d3d6c45f0dd96258e9020ab3c199db87b258804f3749b145048dd7c1e1df8. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/CZA100400179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b9843638c3e1b96d026eb8a1979e6d0d10b9fb260eaf817307cf181893200c5. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/CZB730400081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e280d0748a5feb37c66ebaf4f437dc6358505d8cd28386f518256e84459d16a. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:30:44Z), 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/CZB730400082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a40ec4ebfbbb7f78b7d01700ee0c66bc8a53f914fe3a96e3c8de3db322adad. 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/CZB730400083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4df4bf5f11404fdd99245318e0d11d844ab52ca46ce826b77c4748bcd93b7279. 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/CZB730400084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f8f1c0c1c09f180eaf320b2b76a226e13433a28efee87a5e65bfd762643017. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/CZB730400085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0895c250e067400a8238c3301de6f7dac45bccfe55f27494dee4fed85cb08045. 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/CZB730400087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb08a5de14fac343f8bacf4f97142a9f50c906e3e8835add518b5538326c65f61. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/CZB730400088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0731860e6d9c6a8e8fb8b33de982199825728634c91a888b6bff6bfa36c52fc1. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/CZB730400089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0769a71c3a023f3f5a156e7917832360cec00e1dad715c078da9a2a33245a9de. 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/CZB730400090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7249d901251da80f9672d593cf57a9e3e47bd18235d28fb4bcbde1cc8d4afb22. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:31:31Z), 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/CZB730400091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff96a56c59fe96399e3d54b245ccbb0951563e295b00a228c1f3543636a230dc. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:02:32Z), 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/CZB730400093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfea1e3ddfd92da8dba8d8efa6e834c859ebbc07e44cc38ac5d9465b0a1c633c. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/CZB730400095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7125bf99b1f41b7db8a72d44d43cb284fdef1cc706c20ad6bdc2f9bc5a8ff415. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:08:41Z), 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/CZB730400096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c51a797e055b1f70cd3d997afe6810bc73e76779837fe1df40aa0714b66f1a4. 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/CZA120007016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d20dd0d5f8181851681dc2b8e76ac9ecc76caf90eaaed63f165d7e005fc1467. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/CZA120007018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x327dfa3ac6734e59be0364104f0f087688d8d10cfbc4062c81b9b97099dcb6cd. 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/CZA120007020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x206a11bf7f53179ec20ef6e43e6a24eed912be38308d59d35d0dde52a5c09fca. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:17:25Z), 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/CZA120007030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba9a85fb55e25cd5702155af2ab95f6d667ca24295b34897b6bad04a55576bd. 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/CZA129911037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4fca00bd9cbe432ddf66259a2b8f93d1b7f16e31b0bed8cc420387110611b44. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/CZA120105001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9e65cbb9c19c5193c7485c579df353c3573a3a1f0adb053f0597ca927ead60c. 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/CZA120105006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bd3a1e0b9607ca9901f16169c6b145a17d19707040a859c2ee70bfc60c35ef0. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/CZA120105013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900fc4a7cb4c07b53d16edfb285d5782b743f7b427caffb019686e3a1ae56ffe. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/CZA120211005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb55aff44431dce09603609ebd9385494f536fbd5d365c42f12c0390984e0ba38. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/CZA140200034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78177ac89ecd1cc9c8fe3f0b4da8a0afe1a692841a69582c21274461be54bc81. 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/CZA140200036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43b4bb42052728756280c2e5db93e3a4a3e347760c651acd50257fd081d2ee3d. 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/CZA140200037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1945a1755f7055e292b32e6aea614375a6cd396d2a7ba2a3be993e74d9a891cf. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/CZA140200039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3adc848b04a72f2ecd6ff30a2158781bbc0197a63d5bbf441fde7552b7b1780f. 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/CZA140200043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc01215ef2ddb47b553a4ef3c993c06034d2611c92109212c04c22229e54e8a2f. 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/CZA140200046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb01f7ca9efc291dac02888129524f1993563f078fcc12628e791b4908a7dd365. 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/CZA140200048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f9bc39e76ea6f3f3e356813b157354de5ac3861ce04297d8ea1e8a967b5feeb. 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/CZA140200051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94ce2907d788279b2c34151c177140f752b845179cb5f8a99e5f272f165efcc8. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/CZA120306317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7359f4f29f6ef181a86901cbf3654a813de37770206033f1ee85a9bcf6b764a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/CZA120306304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc693ddd2779b53f10f7d5181b8c9688c72e7053cef232160204d5e0f73998a72. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/CZA120306306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f19ca1da4f413d4d628b075d1d19bf50f268974ef3d32ce311427a9b78b5060. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/CZA120306309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b9f2727499257f286007d5708a8fc4fb68ef6012ed58cc5c7f799547db4a604. 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/CZA120306313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643cdaf6ad4c985fb17857d0775681a567d8b985cd08be20b5680a168f7244d3. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/CZA120007019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e7686300bcee890e2b4d881d47803b6b8e6715db106dae3613451fc2b7c25be. 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/CZA120211010.
Hej, Bystrá Voda (Oh Fast-Flowing Stream)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b3ecccbefe8482fcb543934a28f9b253f707161d512146a26b74d97a2a830af. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/CZA140500200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22c5bacdefe69c23edb0acba526ecdcb6f317fcbf15c542accba9fd61f5a872b. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/CZA120007023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bdff6a9c2c7d89445eba9024c56a38ebe747f5f97b9684d594ca44c39cdae6b. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/CZA120007022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde83f6ca31ca2694dd38223b5317a8ea210d27e1676907eed2a54157b5993f07. 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/CZA160900959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b7b3ba476bf5abd35e072af436aa61e884b9de10db680b25854099b890f78bb. 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/CZA231800027.
Když muziky hrály (feat. Martina Pártlová)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb04d5834bd34dcdc2d7b8140f8c638a91f66c9b6c552d6a137a2c3016037f10f. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/CZA231800022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x705b3b37943dd3d72210232f392814f38ab1683968e0d9d4ea1735211305fce5. 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/CZA231800018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12f711d2f7c64402cd9add9abb315813c0a210a41916651ad33fa9e222bc4430. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/CZA231800021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x096152e71e9ff214c908ebd9b025260120c25ed239d172dbbc56190c15b710fc. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/CZA231800028.
Mamko, nedavej me..(Jinak) [feat. Roman Lomtadze, Adam Malik]
Kdyz muziky hraly (Jinak) [feat. Ian Kelosky]
Kdyby mne tak bylo (Jinak) [feat. Honza Horacek]
Co ty ženy (feat. Martina Pártlová) - Živě
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5762e7a305876266c6b453bb18eccbb7681fccbedfe0b1aa9bccee04a3b5692c. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/CZA231900372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x096152e71e9ff214c908ebd9b025260120c25ed239d172dbbc56190c15b710fc. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/CZA231800028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67531af7333c931553ff8692acad28e837a638bd0ad4bebd3e10bf0cacf6a5d. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/CZA232000904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4abd2d59b057fd93853a204049c4be2d6de4a34038a0356e705777dfade2c40e. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:22:58Z), 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/CZA232000906.
Já mládence měla (feat. Martina Pártlová)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2caec082d6e10c71a0ca414bc2ab06362597cb4c9a0ab0642e4ee75c6521d831. 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/CZA232000907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f3e41a811055ed69879790ee96608b9ca5eac5cc809d3b0f7ef6b6387014f0c. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T21:00:49Z), 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/CZA232000914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b2db1b13f8a6611a6c0e04e0d655f89d29a3d78db71dac3e35af13041e88131. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/CZA232200924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71fc123dff17aa9221f8d9c68acf0d1082c7a85e1d579562556d51b4bf6ee147. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/CZA232200925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ec3c8c47f770e0b57bb6b5fca60a4261ee103200394e25e9793ac94fccc7a2a. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/CZA232200926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf593122f1967e7bce29ccf95a234a700c62e3dcfb325fd3d90ba9d33427b9c21. 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/CZA232200927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb99f94e7724e4fc9de88eef20935f2909302501ca6373b0ce0bf2cc1e83c5b38. 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/CZA232200929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b0014ff079e32d9427ff5ae88495f2b75efc1e832ebdfa6afa7abe92a945b32. 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/CZA232200930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90defec0602f82de12ae80856693f2f225a07eb6818d3981139213087745a0b2. 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/CZA232200931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf19bdf8d85ce1c1abdfb4c1391e6e57c82710d5c0db4df080d9ca1e46ce5548c. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:05:50Z), 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/CZA232200932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96920891e5af6ffcb6a133b5371ada8cb594ab4d59b3e1bedbb4e6136a04e4d2. 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/CZA162300341.
Až já půjdu (Všechno nejlepší, Martine!)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c3af336a0115203a4bc6c11c9d4a3ed68793504f95e971ed64a14be6bd077f0. 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/CZA232400686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6105955e69a9ad7f7ad420d5d7bd5d4349909876ed4b3ff9c41491b30f65cff6. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/CZA232400682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0afab3dca41369c8f1db4c9073b0cca51692d39aa385e0e638560b45847994e. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/CZA232400683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73f4e06a89cb4d6e27ad1ee863cad92d022e1e1c135168d0eefb31660a7f66cd. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/CZA232400684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09889c5c97bf97db35a876d1bdd7c67133e553d1fc098435c65e2db6085fd367. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/CZA232400687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f96f584b692c086d36ce99b78be24e4b97e1e0b699f263d0069608a9b3a162c. 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/CZA232400688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cecc1e1b4a86c361b1035c6a5498c53304c9c44695ab6d6afb41f6d2781be86. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/CZA232400690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57fb252dc47a8f66ae8019d6fb31b826d2363ae74f701c373b11f8bf7145ebcd. 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/CZL962206001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x169cb2e5521ded122bbf31610ca3a550ca112f09cc67624c42fddc5b2a5e8d9d. 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/CZA120112002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf32319b995305cec078fd49513d1cb949a7e64db0af89e2f6787a5e790f65fbe. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/CZA231200374.
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