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 0xbe8233fb814b922c42cafd752d014fedc4c9526fc8575295bd0372258bfdde27. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fdddba54-30bc-4634-a4ce-5f1b896494c1.json and https://artists.proofprofile.net/proofs/artist/fdddba54-30bc-4634-a4ce-5f1b896494c1.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 0x8b73e2036f5625efe008d561ad3ba0171b1e9bf607ecfb945e9d1dff80bf5b14. 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/IL1010004288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33f7fe40b5a9fa4f849db6939d3a0b50a7014c88a346ca64fb0c918a81f14005. 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/IL1010003205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c637dae369ef18b82970773b050ad861eb00b121e6ed4f9663a8c54d3d7f31c. 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/IL1010005549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff8af932609a5548cbf7db1970d4e7014aa9f5f24c8e80295b2d9a0efe78beb4. 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/IL1010103326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c361c3c195fb57d872b513646ae86d360af4cecd5dc483d7ede3756b3f7dd26. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/IL1010000557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x397c93b64fca6ca8027fa1a1f987ee0f06151c824b78126f9258f4af709189e8. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/IL1010002954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6491f16cf63eaafbc63bfd38cb76b9925559b1162449bae2401c729c5392466c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/IL1010001304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b73e2036f5625efe008d561ad3ba0171b1e9bf607ecfb945e9d1dff80bf5b14. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/IL1010004288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa549c4032ecdcc999978b4d1423be676efe30fb30167baaefc13ed45940babf9. 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/IL1010002277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a526967c15e675776e59ee0d3f1829f291054bb4524d7242fb1862aa9f908c7. 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/IL1010005817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2038fa8ee49ffcacad1417b3874d69e41ea47c2a1ec3dacc72a0c33989a55ce. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/IL1001089858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73e806ae83b5986bcacb010328611bf4d0e9eb79f097f14fe1d739df537ce534. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/IL1010002501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2974c1246136f59b107d668f919fb500c3322ddad0b9cc82096efc123a580e78. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/IL1010005624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x251798597a628d64883846e003e89552ca120b4581cfc23453a1d081ca5c5c50. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:11:04Z), 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/IL1010103318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfaf20dc1b5434ba58216b70272dc44c99cba615bdb34ca6a87ff46d5b3a717a. 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/IL1010103324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafee00c8433908a82f9e83e385ef14ada7e3abb6f44a43817967b56f919c97fb. 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/IL1010003449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28422a1eacac6164e75ab5cb0bb9d600217608065b7fa45dbc7954d1ec5ef8b8. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/IL1011120236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c751d63048ea3cb1a35c27853dc77f4696d3c8bb61e1378fb349d6a7d208bb. 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/IL1011098725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84e0d245b13a0f82591711df3b11fbf92b67bdd2a7d78e611121facb65c7dbce. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/IL1011097483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc44f16638be4bd5824fa776b546b5988042eec75cac9737187a2f1be50fb2b. 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/IL1010004885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8221648ae9c1a16fd0b5f603e4f2bf212b6a7dff821e263b3db101b25ec9cf0e. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:08:08Z), 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/IL1010001121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfc5bb57226462b46ea8b5d1913e577d7aafc101f325f34f899d11473106059e. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/IL1010004164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4638b7a9d6926296021e3266be6c3c87aeb890f022d7038e155bc5d39e8276a0. 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/IL1010103316.
ארבע אחרי הצהריים 5: מיטב השירים מתכנית הרדיו
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8221648ae9c1a16fd0b5f603e4f2bf212b6a7dff821e263b3db101b25ec9cf0e. 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/IL1010001121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e4e09ec087fc3ba76ab7673b931adf5b2617c5c2e8ffe703be18d608129615d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR2X41734730.