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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b80bff901ffa32aff8be7791e453c394b4fcda9dc0e7b0c99f90ec10e3cf4e. 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/6b0aa6a3-21c9-4206-a46f-9e1af756ed41.json and https://artists.proofprofile.net/proofs/artist/6b0aa6a3-21c9-4206-a46f-9e1af756ed41.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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x901aaba4254c24232e30f2bd0ea28173f26942e386bd2d0cf3aa6d200789d25f. 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/IL6181400612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29406466265afe1f775e43ad13ea5217228d927937903cdeb04095bc0784ad57. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/IL6181400619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87449c5bca679f97cb39f65010bd09fb2877cbf2e7143eaaaaecba9b6c70de9a. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/IL6181400623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4663fd42a323c885aa1c1c00f531a27d6f3db67081a23897c52b16dc7b49642e. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:37:39Z), 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/IL1057800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b655996a055b3a3fb66df329cea51983ce0ef5cccb7018e4035e07bf7de951b. 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/IL1057800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x185f2a1f5b32df3c33da2c7030210ca15d8a001faccc289e34a8103a45a8c2cd. 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/IL1057800014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ba72b1f254acc294337ff973c688cb0233e0123766dcb433bda0aad6f491b9. 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/IL1058000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30177c92ebcd7fc256c7223b9e7a6d6d5c25862193b4ba80de81cdb7dab79216. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:37:42Z), 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/IL1058000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1acd243c0a8f51e7e2d4a238387b0df2f1e94539ece7429342571d3d4c8fa5b0. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IL1058000016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61054cb12c75f1142488b215b8d6d1bf4caa1e838d8a4e21a6e43990fbdf4f13. 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/IL1058000019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631a6d1df06f0a84baeef43cca7e6080fffbe19342b8aff8ec34458bff63d748. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-22T02:25:14Z), 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/IL1058000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7133ef643365f872f537bbbb6c8a03d24c0e2211301be6d2a941b2928482d706. 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/IL1058000021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e19f81cb5150a4bc1c7c9a862a5c0e8009395876b023c3661bc7ede82eed197. 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/IL1058000033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x260b21513415edb122077f798782a68b269a969cebcd1f002965e798165434f1. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/IL1058000035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc824e1c4e6d6137799d441fe536a24bf64edc3bd192a6fa43e5a64424ddf7375. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/IL1058200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ac3f5ed7fb8744a16c6afb599ecd3f3d78f3a26364309e1e68751afc9936e5. 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/IL1058200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b5412341089a4278871319008d57e69ece0e5f19b7ef8ad26b539df2cf19d26. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/IL1058200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e82f31b0d4305c8edf9e379df428c9b0ab3bb131a4b2bbe0b6bd3e16d82b13. 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/IL1058600009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a1360e306efd363e58bd286d3528a04b84512c6cc7cad3e5fd30eb27784d56f. Chain 2 (Bitcoin): anchored in block 959018 (2026-07-21T14:12:28Z), 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/IL1058600012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc16698c55fc111754e0f9fda9607e75d781904731774ef566563143ffbacec4d. 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/IL1058800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57618ad742c4c3f3fad86f1a1edd0175eaad4d70c34ec9b983b7a9e4b503ed14. 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/IL1059000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf392fb45757d56f150e3cfd0cbb19283f3974cfc4ab20aeaaec90d8c174eb2a8. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:08:24Z), 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/IL1059100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45a0b89ade71f6f7766558de79b0579b76c83dfec08afd0894c01a4cf11c8400. 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/IL1059100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c0c968ecf88ea934cc9f4ecfa615a6aeb7e862e96b0a0dabafc75535a7bd2f. 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/IL1059100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10700b59e6f7238f39bbbc14aeae9bc6321e675d347a507d4d6995538771c9e1. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:05:00Z), 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/IL1059400068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85eeb470d40f06fe78a623ad3f814e3fc47cd2a26b36cd2e3ab77af12ef595e3. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:29:56Z), 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/IL1000000458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaa4aae756a4667b4cffb3396befcb7db2e62e58803c280e0bdf94c3fa02f450. 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/IL1000000459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84e8684e057b70bdc642ef0d7cf153e82bfe181a69c1e0937aa5ed05e779ca85. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/IL1000000461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc55e7ec4713ffe892452e076591994585a2cb54c2b22b1c7ef6eb1fffedb939e. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/IL1050810158.
הגבעטרון לדורותיו - השירים שלנו 1967-2011
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1983674df57b961946ee1163036b734ae1d38e2320e75a9e3dd6f4343a837af. 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/IL1058500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc55e7ec4713ffe892452e076591994585a2cb54c2b22b1c7ef6eb1fffedb939e. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:15:11Z), 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/IL1050810158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e671db35ba1bc6d8ffb36fa4e0474d82055502192e4891e1e0def84e747d4fb. 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/IL1058600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e82f31b0d4305c8edf9e379df428c9b0ab3bb131a4b2bbe0b6bd3e16d82b13. 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/IL1058600009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c12ee58db7898000533928d6ca7484f9ef62eb25b6d4190574f53b399f44083. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/IL1057800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0572ba1ea513df0a9cbc730023ff5f04655eb5a56e889469d12e601ee1faaf1. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/IL1058000023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x260b21513415edb122077f798782a68b269a969cebcd1f002965e798165434f1. 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/IL1058000035.
Our Songs - The Very Best of the Israeli Kibbutz Folk Singers
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x874d2f20fa82256f06db979737bfe8e5873a8c4c6f6d3fe11ba7901d9a1b9452. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/IL4191005173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c19f9b9d40734ecf3a9c8871bb1b5831a39cf25d842c885a74fe91ada7ba5a0. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IL4191005179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5175403900b0e2b01e6a05382cb6fe41f6fb97511efaac1c450fd95789555bd7. 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/IL4191005182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf73c6b826ae249c312d07b1d3dbb6841f748b4371d7141808907b4c528363362. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/IL1058200045.
יעלה ויבוא – פרויקט המחווה לשירי יורם טהרלב – חלק א'
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa40b5523bd388c5db1a617d0e14ee55672e73ea8da75e0f19ff9ddf2a34f4e29. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IL4432100044.