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 0x17bd03b1f2b5e1e0ad53fbec230ac77b1a280ba75f00224a2da9e8180ab03447. 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/28abc476-0c83-48fa-abde-1434a796a1ad.json and https://artists.proofprofile.net/proofs/artist/28abc476-0c83-48fa-abde-1434a796a1ad.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 0x9fc554a25f39813174774dcf84dbce7429007e247ca053b70c4dec4076f902d2. 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/PLI362544430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e25910dd08e4e144d62dc9d5edc8d568bb6ab2b465cf9182843d5d6872edcb. 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/PLI362544420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f4a0b937e65648c630acac9992f1bef440a82813dd5eb026481d7920f3f346. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/PLI362544440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a438d2a582c23d67dbbaa17d568b9e806fc8ee5fbd0a3eb0ee3a0e80ff61ee9. 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/PLI362544450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x905bb0fc538402d2faa4ee3ae2a142a507d193299ac4fab0e850eb0c1ea007ef. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/PLI362544460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be9e214d32a3e2b701699f3d1d0fd6bb9a780e05dc7dd5cc09fdec0a0ec86ae. 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/PLI362544470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e4f714bafd2a83469a6b456bc8b9585f1b6325c7b9aaac653585e08b88590b. 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/PLI362544480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3877ef65cd76eb50243b9d26df91a5af07cc36974cea4e986052c807fea6f2. 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/PLI362544490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47113cc61687c58ff3f6f6132ba1440a523727f99c57f850737bb280d3dc6fa3. 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/PLI362544500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1823371605213ec2ed6a527687b939bfe6c7a9324d64cd7361441d75f256ec58. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/PLI362544510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41f18652ae136f3e0f2e5dc4c290c0bbf06a9fa397757cae5be968bb2de330fe. 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/PLI362544520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2eea685c1c4d4f7e2004e955814f2a4ab94d83cae991381cebbd3ea8f93950c. 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/PLI362544540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cdf9515a911ed6d681e1e8d50617420ccd5cb1b9027046eac919bf5321da6ba. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:54:48Z), 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/PLI362544560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf3efc6d6d6901ec34367e880eacf08718b9345cd668618ac47c710a8ea02269. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/PLI362544550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c1cf72c98d3290dbdff32f971ed94e0794d9fb6ec40590117890be0acb245c. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/PLI366590860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe64306ba1f6f226f26cebdca3a0aaa9666a1c74e9fe270247adf640b6947564f. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/PLI368244810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad5f1888b4bc6e6bfbe57fa2045576fffde48aa5f772181fff8cac5ce780051. Chain 2 (Bitcoin): anchored in block 957634 (2026-07-12T00:26:43Z), 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/PLI360376310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f770beafff462464303517d7275af020a955de4f6153c47b4cee1d0e01c452. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/PLI361512060.
Banger dla panny młodej (Szalona piosenka na wesele)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb25c83167323c7e789ee44cb5f3cbbb9a5c64350cda669736983315465d0e2ea. 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/PLI366371930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdfddbe71043a95daa70a694201188e454d0aca0faa18348d03d86b0f5ff4b70. 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/PLI369928240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6859af7e9e0aeb3fdffe960fc29a0d41d59c6d7b7e44f527d60174787fce5097. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/PLI362943560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b0a62d9fc3e0633b934259ce8e18833dcc72b91be4344fe9e18bcffadad184. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:47:01Z), 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/PLI362948530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda6af94cc797cfc97135939180a388df225798bb07cae33e85c611631184944e. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/PLI363631470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x177b1c7f54c16573a709fa3db4ebdee792297e356475963b3e7edfb047f0ff0d. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/PLI365167010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9aac677d75c7a8de69e9241908398eeab623de7325a40915f88fb9d0ed5e9db. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/PLI368084371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff1ce4eb6d07400961d393988095f1c5b20dbc506938896f99549e5fe525b5f4. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:51:12Z), 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/PLI362241680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f08faedf3b19522c43f0b4d5e107e1465b1006d34f9e909b5465fb36a3413ca. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/PLI361557990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9b7167afa36135aeaeb8b0b6e454ff79df4c04d9c9ff847896534fc045a9dc3. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:15:59Z), 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/PLI366062760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x814684bdb3e1833e5c971792a0f9c4d449e4ff2f8820a36908bb7626d8e98bf3. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/PLI362258720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5734e605fbb249fb93429cc3bf4b3df312450a1c3846c8b59180eaecbf839fad. 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/PLI367940080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0417e99e97af3c5be65db35e4ee5c22713f2ea65e7d8d0e2fee05a795c8891d7. 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/PLI369054210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29472892e13699403d1fd97833a7ee08a301657af777427d6128cf8d2716deec. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/PLI369208320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e63e29c5fa1c54c9bdf48953066f6c23244afc74863964a5dc0fcdb8d03af4. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/PLI365091951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb11c0124588d21536d5c609a072d029ced5029d8c984a2d5e2b8df48e9b2e6bc. Chain 2 (Bitcoin): anchored in block 957634 (2026-07-12T00:26:43Z), 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/PLI363886670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc24cacc6bd428ed89d86f75f7dfeb36a0138f299e55fe1ab7af2333ce17357b4. 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/PLI369301000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7864eb8c1cd007f31e5c1e926646d55348187de940c95c9053910eaf650ed510. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:08:53Z), 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/PLI366679520.