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 0x959ee1bdb3504b76989b9c5b9580e3390d6705343c654500370685f7ea3cba09. 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/02810148-eef1-4f2a-bdb7-608c4ee55d26.json and https://artists.proofprofile.net/proofs/artist/02810148-eef1-4f2a-bdb7-608c4ee55d26.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 0xa8944b14530d07ac1716bd17aa02999a7eb101501b57cde03268366eef4e18aa. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/IL6191000197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1f1933aa741f6183b7189a721e7a0d2ec67dbf753a38c745d28e13858bb6a0. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:58:27Z), 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/IL6191000199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x069badd33cd06cb5f79f8b6d758141363828b51115fba4575159a5d681e39be0. 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/IL6191000202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d68d4f3d3bcacb0a6edce90f4e910aca4f6d24bcf90dfa448b7212299ea6987. 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/IL6191100188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc23462a2b41bac1019957445f000d4b95f2fa8f6be7f99563348303a7cb91db. 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/IL6191100189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126c67835cb0c6dcfce7b89cbb986d32d64d5ed38e33812eb874fec00775cbdf. 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/IL6191100195.
זעיר אנפין (בקבלת שבת נוסח קרליבך וזמירות סעודה שלישית)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a6accf7973531bfd877194ad1a4317967112ceb0902f8f5adb96d235bc1ad90. 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/IL6191300255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaac7f89646246f5f8ebd4ee02c0172c1c463bf009f3ecff0730fe59f45a11eea. 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/IL6191300256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bad5268908f4ac7a8958cb49774a793a3a4d98d5b8cbf87044c9c2b16cb9b8a. 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/IL6191300257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33281af7b521277c2a7919984f18247d8d2f62dfd9aca810e5c11fe1ae44afb3. 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/IL6191300259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb5e6dd0c953bfe624d8eee6c2fb9139d25b59d0daa5aba17ec393717698209. 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/IL6191300260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x355859e468a99de40a7e0b302400281e7df6a052285e514556da70d6675fc714. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/IL6191300261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x576dd8a35ba36d1a6f72271b4f7a9ce05bd5781e241adeb5889c480048e73b4a. 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/IL6191300264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3e79733405274d98f996c54e7481e2901ee5cd76434ea1463dd233846928ff3. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:44:30Z), 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/IL6191300265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43da79a116ab3c93f9684f3eef5b02ae823eea0a990650039683af9655176cd3. 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/IL6191300268.
Nifgashim Be'yom HaShabat (נפגשים ביום השבת)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x331bd4334b5098bbc45fd203c749de34c9cc1d50521300ab85d46e4c5bea0da2. 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/IL6191400314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1688a52eed3e452489ffeffd5733c97f85cad45a30c03649b5d1b54d6b20241. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/IL6191400318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x258535b79859af30f184ed56550e11d208322ffd235d25e98f7bb16445c9f5a5. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/IL6191400292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb84860ca308d871c49ccee3cbc96e82b8b08c17bc465a2cc2c95edb4d6b16a48. 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/IL6191400294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d28afd2203767e00ce3fde1793a13408e62e35fa44f988f79af498f369486f. 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/IL6191400295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce9650f40c0c79bb4957b9fae3d1802ac23f28eb79ac3581943ff0337815eae. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/IL6191400301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbcd793a25651cabf02f0aa98700545b668fbb6786298edf5dc4157e31dc1ff9. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/IL6191400305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb165b2b7197a5728a931619c603710d5f1bceab80d672817d281b4916197f7c7. 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/IL6191400306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b52a229a515730183bd998fa4febc39fd98c499dab5b64a4a3914303114b872. 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/IL6191500594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x720a4b807f06b5f1b1d54b401471ba928698d7f2ccb0ab9f6ea432f02a9ee785. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/IL6191600948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b606cdf1cd60b4c24788bbb0af106c2a532b1cf757c750de5343334f1bf574a. Chain 2 (Bitcoin): anchored in block 957536 (2026-07-11T07:16:23Z), 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/IL6191600949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd725f7fca698a207c680884c928f14335ccbaa79c6a4d309fe3dfdf44de07e9e. Chain 2 (Bitcoin): anchored in block 957536 (2026-07-11T07:16:23Z), 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/IL6191600950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x776763cf3c06aaa920a6986583a3d1726bf493fecd5cd71571e3d328a8fc3bdf. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/IL6191600958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x951151910338b6efb49888afc25b64e4503340a253ccacfd83ec185c34b1f113. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/IL6191600959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4646272490c0fa6adcd275cf16b025334ec5da820e125cc227e683fab871cab7. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/IL6191600960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4515c4bc298f829d4abe47d8549c872031fafcb5d40d104b9caab68d49e158f4. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IL6192304280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe297a530452212815ce001e6a9645cebd9019739c543b171f1296bf4fe499b. 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/SE6XW2419970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29cd9252af064024613664ba4829c05200f40e94d4cdf37df01e4e9a1fec8ef9. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/SE6XW2419974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc48494d70dc0bdb46b91f2d66a72a79077fc49b99c8a8ce29712dccef638d1. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/SE6XW2419975.