Leone is a given name and a surname. Notable people with the name include: Given name Leone Battista Alberti (1404–1472), Italian Renaissance humanist polymath Léone Boudreau-Nelson (1915-2004),
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 0x3e9ab56c7fd977e3561693d2f8bbceb276c49f742c0dc61c65e0607ede957d42. 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/a75d9335-f71f-4df2-a580-bae5a13456b9.json and https://artists.proofprofile.net/proofs/artist/a75d9335-f71f-4df2-a580-bae5a13456b9.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 0x699087c3431d461df454b5434004c0e283de1a52da1b6c2736d9bcdab735f1a6. 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/FRX762320136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4fec033aa302900a01ac02b1b48161f31d4bb72dfe8d1d7f8b406f2231d759c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FRX762320138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63975cade50104463cb7dcc138cb3374ce7824be62f3832f0af1d69f160876b3. 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/FRX201943121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4099626edacfcce85fdacfc93254308bd1c7e78bf13c22a87c8ea01a9729877e. 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/TCAJD2482376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe082cc4edbc1b2b99890f7bf711c60a0e0c0c96dbe8c00137cee806a3f37f0f7. 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/TCAJD2482384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x939325cce9ccf93df0ababb3a8886251643e181225afe8812c6b590c58259eda. 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/FRX872190423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x176f3dc29bb06fa273f7d3daa2a4a84def91aa61deecefd04cf5448414e054e9. 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/FRUM72100757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf40bf0a162db50a0897e33b52bf8d41a26d289bfba17e27cc43dd7c613caec64. 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/USUG12004785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x201b7608082b9fd62a504a82f362789be88ba0284c2feb670416d74aa8afe889. 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/FRS182075212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4df7d8300c76c966173c38220a66d78452eaefa4c5c2de0e5dda51a9a8d3bb3. 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/USUG12004786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf40bf0a162db50a0897e33b52bf8d41a26d289bfba17e27cc43dd7c613caec64. 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/USUG12004785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68c52fc3df7be4fa31b0434e74cbbff14e64a6f9235d19180b3bb5a66ec55a7a. 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/USUG12100347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac29fdcea3d299de01cbe057de30f2dbbafd5f09e207ef4d50ec75408f3c4b7. 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/USUG12100344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e2645f4d53eaed3b2f56807c40f81376a64443b61a7979c7debec387480ac3f. 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/USUG12100346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9bce6758b85f375e387979835a54afbecca5eaef0fbaa596c2f2c7e234bd0a5. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:35:11Z), 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/USUG12100343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17555512497b6e7698a2b074beb44a764cb09bca4242fe4a000b0af7dfd4a153. 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/USUG12100345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88cb2f625eb1988206a19323601abb16ce7823d885063e4c1df75ba30e3dd9f6. 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/USUG12100348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf9d117a39d096be022a0d28b169afe63c584221d42dc9de3b794bc35a84fb6e. 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/QZNWY2305931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x999e1cbf853fdc8d6f454714cb766c6f989388dd3be179ac84b17c3bc2b5f1d8. 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/GBKQU2496501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e2ed95859e9cca280f9f533bd13a0992736d04d080453a43ec8059bf56af17. 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/GBKQU2496502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x980ce3ff7fbef332d6616d2feee368bec059375fdcb1ba32927d0facf6856da7. 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/GBKQU2496510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cf9f31119dc7d7b7ebc15b9aa1694383d168f428e488b99a613aaa041e2640d. 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/QZK6H2266468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5320e7bf2c1b506a8fa2b376147d60aa0264c22e582c873ae3d1b7a66964126a. 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/TCAGF2273720.