Thüringer Sportlerchor "Bergfreunde" Schmalkalden e.V.
{"copyright_id":"0x2021b50e108b0d4d54dbb301ffcbc81cf581fdaf309a5f1a37411157321e76aa","name":"Thüringer Sportlerchor \"Bergfreunde\" Schmalkalden e.V.","registered_at":"2026-06-20T16:55:42Z","symbol":"NIM1659684","token_address":"0x676375ad1a6d19043fcc42b6b72eb32412250da6","type":"artist","uuid":"bb1cad98-f8d7-4ec1-9a5d-ce46b4b5ad50"}
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 0x2021b50e108b0d4d54dbb301ffcbc81cf581fdaf309a5f1a37411157321e76aa. Chain 2 (Bitcoin): anchored in block 954587 (2026-06-20T19:10:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bb1cad98-f8d7-4ec1-9a5d-ce46b4b5ad50.json and https://artists.proofprofile.net/proofs/artist/bb1cad98-f8d7-4ec1-9a5d-ce46b4b5ad50.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 0x7618f0ce9fd0ce37b74e2fbe6edd4ddf29c7dd6618b4ff35123ec263c21b8393. 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/DEE701002917.