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 0xd5a9f5e031bfaeec2cebb0029b5e741bb88febe9e9ac35ab1e85713dc964b23d. 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/c8fd9b6e-3e22-4bce-a800-1f21a4fdb217.json and https://artists.proofprofile.net/proofs/artist/c8fd9b6e-3e22-4bce-a800-1f21a4fdb217.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 0xbe210b76dc7be6c219640d4ced6cc946923492ef60bcd6af249a616b6f363ce1. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/GRE016400591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59de666faef52cf2edbd1ea4df3cb6614c1afb144ea68f54c9ad87c387f8230d. Chain 2 (Bitcoin): anchored in block 957539 (2026-07-11T08:09:42Z), 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/GRE016700537.
14 Megala Tragoudia - Mihalis Menidiatis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda9323d2e28fca51a18c58eb164dc70a4bf413b5a8996f5c8ef870bfe9e6dbeb. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GRE016300499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e2dae86d0f750f8d34899c378de2b4dea356c487a0b047900ed2a9a8d33bfa. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:36:31Z), 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/GRE018400462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aed8e7c87413bd10d58d085c83615f92d831eebdc3729dc53f9e9e16ecb63e8. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/GRL019600518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaffce5d41873534a7eef41109807f625b5e97424108ada4d8e8e0f84de5e2ba. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:10:38Z), 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/GRL019400234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4d8fb502f916050e8648f7fbf43c68366ba85313021400db6796ea37f02e177. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T10:57:18Z), 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/GRL019600509.
O Mihalis Menidiatis Tragouda Apostolo Kaldara Kai Taki Mousafiri
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38da5bc8c5a507e6f6d09628a61490d2c1a1fae7d748729f2ec0639be3fe618c. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/GRL010900223.