{"copyright_id":"0x3ba3fa74ad0bbec4e85dbfa6f573ba4bd768a6bffdc5c17d0556fc9592c4bd39","name":"Janáčkova filharmonie Ostrava","registered_at":"2026-06-11T12:05:04Z","symbol":"NIM0022778","token_address":"0xd3660bb71e6ea0fd0e376f0b65ff47dbd351d546","type":"artist","uuid":"1105d878-f142-4e95-a4b8-758ce55fcd72"}
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 0x3ba3fa74ad0bbec4e85dbfa6f573ba4bd768a6bffdc5c17d0556fc9592c4bd39. 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/1105d878-f142-4e95-a4b8-758ce55fcd72.json and https://artists.proofprofile.net/proofs/artist/1105d878-f142-4e95-a4b8-758ce55fcd72.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 0x0f013e40e90e5c4f00a47309173247f016b5f6cb1f534eb9216a6fd1c5a575e0. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/CZA161801049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x943f2d9a1e2004f943d3e0a7443762e65bcdd982c4c68313127d4413d0b370c1. 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/CZA161801051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e9e772edb3cfee0eeb995a784b02d73096c833f6954a6b597698e44ff8fe3cc. 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/CZA161801060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0f7a8f3eb8d9211829f3c7581c1ab5ab0a0651a2ea4c7330e135b625e5c420a. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/CZA161801062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaee53a8edab6b8552692b9b2896ed634031f2b15ef33fe34e9866f5ccbd5734a. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/CZM872000019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fcbcbd4f4e6a5bfccbc77c5e12160d955ced7315254ffb83bd8bbb83d554c9c. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/CZM872000022.