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 0xb6a3174757924368f4e245a871a72e92626a6c95236e082975c6c05a0ebc6dff. 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/dd12d164-cef8-4530-b532-05ea7547a72c.json and https://artists.proofprofile.net/proofs/artist/dd12d164-cef8-4530-b532-05ea7547a72c.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 0x70b8f9bbd95c73eef4d6a7d3d481ff4cdaf01f4de5e9c755549aeef844de8c96. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:03:42Z), 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/PLV362100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecbe22b0d97388d32005800fafcde5f00749e52c96802c00b0fa3c2c05d3b530. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/PLV362100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d9372e1647e884fe6860bb3a63cc1eb86720fecd95dfecd47dec74de65f8e4f. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/PLV362100022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1057d83455c6a2d6a634a23fbe446c6ea30e121829a28ccc39d250d180fee19. 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/PLV362100024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa05099953a74e8a41c0fa3886d3a455aeebad018eac9afbd384166c0ee9d488. 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/PLV362100026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e78e9b06afbd05064afe446c039cb3c0d484425a21918356052348511e565f6. 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/PLV362100029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77cb423ee7f703a237c2bc3546e2f8faff88d2bd40f303aafa800b68eab714f4. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/PLV362100031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f00f1be9b2288208f1b562394c1f68f366b3059cb5913407d40b021291f474e. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/PLV362100034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x693c43bd66bf4b37a530cc6ad95ed7fd3fff1a6107464c4d8c0a3f42054094cd. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/PLV362100037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2fd2df519992a4c32a54c6dee371dabed2366cb50657949eb8d6a29edd3c5b. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/PLV362100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd09d2d3ce471a38be63c8ec7250199174f3042235fd53710fee8c638d5ba13aa. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/PLV362100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x378a15bd3d4849d899c5a69551afdd387e553ae7c70e83dec85fa43fb24a9bde. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/PLV362100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x325b253e864463591c87cd0522b352084544d096f7569937c27f7cda60ac6bb2. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:37:24Z), 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/PLV362100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b3a4c86ad0ef640c9fa76899f5daff31d95e74a86687f5131aedfe5025c016. 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/PLV362100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb4248edf0e8219d5c217cdbc640701e222aa7198aaf333b69a253ffe292069. 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/PLV361700031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c03b562d42724feac050eebf68dc3fd0e6f780d78510029bf152b0c27524a5. 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/PLV361700032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56aaed4cc6976d23f97b81aa6b542be9eecd24884561859b41b086287922a660. 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/PLV361700035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef2e1d7e6184bf3d8f2ac61ae377b6330361507978f35d250978177d557aac1c. 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/PLV361700036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a04e06b740bc3a41484842b176f6991ae6a51fa894869d5ac38a461f26051e4. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T03:25:59Z), 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/PLV361700038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49152af860fc284eef062d3a12e641a893bbc1a93e647441bf4dc8aa1033c120. 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/PLV361700040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e3ce086a7283185f8a86347112957b236af3dbc41117225617fe0f2fff174e8. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:57:48Z), 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/PLV361700017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf60ea27d1bf5348e1a5474408f47d8883dcb31eecc9c5d9ba2b749dd56aaeeff. 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/PLV361700018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c30e4a9c7fde0ccad9f98fdc81664d39caa22094376a74ea44b05ff98be9121. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:50:41Z), 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/PLV361700019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49446305999596b19986ea988cb70522857524ce8a8a870983fbed82fe2fdab2. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/PLV361700020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x320f06911109e73257d6d1bdb55faebe682028bc2bf800631e48a44f04322003. 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/PLV361700024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a6d27b1fc27be79009ad6310154bf6d05edd9b8c85d522b55755f740332933. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:56:09Z), 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/PLV361700025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95ffefd457a3188d750e01eca8cfd9a1aed5ea75b43bd3ae41cd9f75a0cf3242. Chain 2 (Bitcoin): anchored in block 957726 (2026-07-12T16:04:28Z), 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/PLV361700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65d10433d505c8bfcc8ad62a1b70a905d5dad6001c4e19c7fc2c6266d58c596. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/PLV361700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f7de37d788808d95bd3bf6fa75dc8bab7583b5857d51ab607b5aa9ed3fd0f59. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:25:19Z), 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/PLV361700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec52aaf0afe85d727785cdd5d718871f8545a575229a87ca2cc613e1ea0a666. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/PLV361700011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f9bcae42b49d985e8558344e4e62fe99a89c431dad393a0f737f6783cfdaa3. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLV361700013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb812383d657f5ef516b03050b46d9ddee2b56c9a2fec000812331cca2fb2d25. 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/PLV361700014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ef6de129c48bb8c9436bf6d519bbcb29ac82a21625986361ea4f6f29512ad2. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/PLV361700015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae9586f3055e0310501f686d2a994787232fd49204e600f4c304234262769097. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/PLV361700016.
Bez sentymentu (feat. Lukasyno, Nizioł, Janusz Laskowski)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb4f490fa5f9aaedb6c49bf8a69c4b2c1a9bcd4b796e9aa43d220b8a73c268d. 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/PLF241704808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb4f490fa5f9aaedb6c49bf8a69c4b2c1a9bcd4b796e9aa43d220b8a73c268d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLF241704808.