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 0x01681c5bcfae3638c19a488fdb9b48e4834cb8563dfe10174a24e1d1707fff29. 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/425dfc7d-d9fc-43b0-aab6-7833fab48231.json and https://artists.proofprofile.net/proofs/artist/425dfc7d-d9fc-43b0-aab6-7833fab48231.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Live at the Kallimarmaro Stadium, Athens
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 0x255f36611fc7d6df790a203de90f5fe5b0a03ba15ccb667e0ecdbb977fdc9025. 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/GRFM12000031.
From Vassilis Tsitsanis To Mikis Theodorakis: Live In Nafplio
Mikis Theodorakis: The paths of my songs, Live at the Akropol Theatre, Athens
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x257ac46f061ec5115811a565661cf1bd0a6b0aafa05632410d3479c33dc1c8c3. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/GRFM12000721.
Agapi Dihos Akri (Kimisou Palikari) [Live]
Tis Ksenitias (Feggari Mayia Mou 'Kanes) [Live]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a6dbcba12c3cfa09a30fbe2d05e158dbdf0d3ea6895a59139e3f29fa818444e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GRFM12400035.