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 0x972a97f618e958898132cf8be847b73fe5fc30c11d353d5b6942230e9f342376. 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/b4c391f9-8573-4ec8-80ba-0d4fdcf5ab93.json and https://artists.proofprofile.net/proofs/artist/b4c391f9-8573-4ec8-80ba-0d4fdcf5ab93.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 0x96f217f81732fd98f05a0b7b140c6f2c1764f00c3f10c27f4afee4ccb07acf01. 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/ITF341800025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c08e26f8e4d460ac339aa1525d5c35194ef772a83b12e438781e4930e79c2d. 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/ITF341800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd3e3897a4adc3fedc96dd1760d5dc2b9ed2b4d9a3aef5af3b2fe1e674180446. 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/ITF341800026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9002a3b3f94cfc53987d18a4e272e5ff27e421a4ca9c9e083136d246dfdf5a67. 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/ITF341900022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b7229e1fd432ca374d0614b228e7a10dfa6240f22ea4c7d385a40800c4cc3dd. 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/ITF341800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5619b0334583ca6234ce0b11826a55b0e86dae3e28081cd04ea82c4c81679b47. 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/ITF341900024.
Locomotive (Il Disco Del Treno) - Psy Cn 2019 Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0d975809f18024ec051d0d12f110d20f71591ab450db3be7b54351298d81317. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ITF341900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1335a2a759ce2804bf3b7ce12a54b36c12fb70d85170aad1aaf69c102a6e5a09. 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/ITF341900025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cadbbe67329fb10d398c0c8af2932a2dd2ac6473843597797df51650597e19d. 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/ITF341900026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f217f81732fd98f05a0b7b140c6f2c1764f00c3f10c27f4afee4ccb07acf01. 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/ITF341800025.
Locomotive (Il Disco Del Treno) - Psy Ita 2019 Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd8e0da59d1fa2dd5bc8b2fa49079b6c31b417a957d7f88f3a6b352e219fdec. 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/ITF341900001.
Sunrise e Margarita (Paolo Schiesaro Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2617420ce9d02ecf795811a5b63b5269b1f293efdbf5d218155e1437c895f198. 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/ITF342300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35fc39bdb74c316b165e191caf86833a4a3acf70e702ff6a8501b3546c3c6af8. 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/ITF342300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a46eb2d633932bffdcdb03b3f4ff28a3b5eadee41572e7dcd9b00173b17acf8. 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/ITF342300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f36d992aad11e33e1c0dd5da645a67f5f542a262700b9af49864df9b9237241. 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/ITF342300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c80f578285f748bd620ae6dd1e448aa6c49d99e3d15482cdf6de2776e825472. 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/ITF342300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5028e2399ab6a33418a79cf2d84f2190e3cf9dddbe7df21f0805ee2b6f50d148. 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/ITF342000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe99acccf9360ce7d893a0038b66b17beb3d469170a057dac120b8dea5b413d72. 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/ITF342300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc8150bf42f1f19360bc18a0a280a2caeebed40b81e84a0c2a564dd3d65c2053. 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/ITF342300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f4d8826d4ab095b2e59725ef15949a2f907d30614281457982b715f1c22e4cc. 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/ITF342100036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6afcf2442961903335eec73559ca11cbc1601120ec036e052a7f6a79239daf29. 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/ITF341900033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb53a62dd32e3c10d2c10133936b51f8a27ddd537353410e0237b350a1a9f4449. 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/ITF342300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1335a2a759ce2804bf3b7ce12a54b36c12fb70d85170aad1aaf69c102a6e5a09. 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/ITF341900025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb496611799b03774dd731413c22a05c66a971fd5b047f4b562ba16ae1876a0b9. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ITF342300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d1c236729ed4ebc522e33af11ba5c97b91965d5570e9b32a3493dbd6965f13f. 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/ITF342000057.
Locomotive (Il disco del treno) - Psy Ita 2019 Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd8e0da59d1fa2dd5bc8b2fa49079b6c31b417a957d7f88f3a6b352e219fdec. 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/ITF341900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c868fec4b21f576fa929599aabfb6e25f61729f344c3a4342a4c6e2c20e6e20. 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/ITF342000063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0202c98e4bbd64313647a3bd0fd413d09a1ebdd4f11a62ae71101957b2cbfabe. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:09:26Z), 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/CH6542410632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d8e070a4814b05d764011effeda100125e779a38379438ce4167ba013b834dd. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:44:35Z), 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/CH6542506223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46d35f36bc1461c5c252cddae52161d60a9e5e4f64da8c527d89f2490e661631. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/CH6542518254.