Neophron of Sicyon (Νεόφρων, -ονος) was one of the most prolific of the ancient Greek dramatists, to whom are accredited one hundred and twenty pieces, of which only a few fragments of his Medea remai
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 0x855afd8c739934086e74e14443783b9633fe40e28e31a26f7efc58c62a0c6aa1. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9666f631-27e1-44a4-903e-92d71b403f29.json and https://artists.proofprofile.net/proofs/artist/9666f631-27e1-44a4-903e-92d71b403f29.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 0x42fc8588ae79be2de39940b10b7f6e296a392bd2a7819229b2ca8442b9c214ef. 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/QZWFF2354609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca823199d5e65c0c358d08aabc4504738b1763f99163db4d493bb7912406183a. 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/QZWFF2354610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ac290442322d16707bbb8ec1c859d24d138467558e9126409a16f0364808360. 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/QZWFF2354611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c032bb8c26c2a7ea03175e7e7524326e5bfff73832df2387427a476dab8d10. 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/QZWFF2354612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x506abe3df99893a73544bab42859d5103c7364b78f1ad8ce26808ee91b73a1b9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZWFF2354613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c06ca212333ea394220e63b498d25b19c08db2ab2b2522b517ec185a0f346fb. 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/QZWFF2354614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c71e19c67c0b6481b50cefe5c2799ee9ffd194213e88f19f6001ef611d7d92. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZES52561870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe47cb9b9c107b2dff9807be47c4fcc9c4220497e28e22b164079f6a852158967. 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/QZES52561871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1662a4c41a5f60500a1f3cbfa993f4190f453eafa1d8794964080bea1f1d2f0. 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/QZES52561872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6253d738662dd18b5983bc248eb0bb48d2ed4083998ef9f43b09b6c7fbd0ee51. 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/QZES52561873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59baad3563c91069975759e819b7ffb004a430ac22a61e9dd25a080e74f7d48c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZES52561874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe87e4eead2f2e44ae22c2814532893f9d99cd630313e7e6816b8d0c5dfb163a9. 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/FRR642201761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe87e4eead2f2e44ae22c2814532893f9d99cd630313e7e6816b8d0c5dfb163a9. 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/FRR642201761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d5766722ace089d2d29d775ca74fe149b4853ea6fa9afc4bd35a039f1e169e. 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/QZHN72334939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8ef3f314db7006d7e8b0d30768fd781656342c03ec9fe89dbd66c2a4e94c95c. 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/QZHN72367918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed49ae704181d80af688dfc2af59f1399b5ea7fadb0d8bf7aabfca34ac97e90c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZK6H2395269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fec4e849a3d955bc79a0b2ee03cea1311866578357073cdbcff454c2f54de92. 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/QZPLS2278309.