Czech Philharmonic Chamber Orchestra & Kuehn's Mixed Choir
{"copyright_id":"0x8c8ac5b499aa2d939c6b574560372d8df9d25b79fb73cf37875eb9bdce8bb014","name":"Czech Philharmonic Chamber Orchestra & Kuehn's Mixed Choir","registered_at":"2026-06-12T02:38:50Z","symbol":"NIM0161630","token_address":"0xf22a930b180aaaf163bc6bd20ea3b89dd5ed9084","type":"artist","uuid":"7d7fbcf4-ac9d-44dc-a8a8-d0e3227f1980"}
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 0x8c8ac5b499aa2d939c6b574560372d8df9d25b79fb73cf37875eb9bdce8bb014. 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/7d7fbcf4-ac9d-44dc-a8a8-d0e3227f1980.json and https://artists.proofprofile.net/proofs/artist/7d7fbcf4-ac9d-44dc-a8a8-d0e3227f1980.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 0x6a4a54438a5025f5aaff80a7f242ed49c13a625a3cfe93348b2945e4df49e89f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USHM91021026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe6f73cc279ea4af88738ec2dad31c43945e1db8b699a7f844e7171a1ff37547. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USHM91021029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91ca61355aef809ffb4d94b491ced81b2692f803b8be3d8b6c021823bfad1dc4. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/USHM91021031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb4a0544fe1c3d5decec0491a83cc0d874e2f0a002acdc72c6c1188b4b53c7c. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:43:52Z), 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/USHM91021032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca31bba09fda45004ddcd3fdf5b5359427e48a6efa3788446bfc7d27682470d. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USHM91021034.