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 0xb7ae2985d2835a993f2940fc36e8bc2a4e323183c0a1db7c654705b90d70be68. Chain 2 (Bitcoin): anchored in block 953930 (2026-06-16T10:36:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1e4431cf-fca5-48d1-9f25-12940f549550.json and https://artists.proofprofile.net/proofs/artist/1e4431cf-fca5-48d1-9f25-12940f549550.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
DU DA DU (wenn der Kugelschreiber rollt)
Volksmusik Hits Medley (Folx Stadl Edition)
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 0x8e628a2c9a1559ef20ae59ae431320c77be75484f74a8d54fd075a121919a4a7. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/ATF472500804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99995093d918553006f4b36382ef3b6f3e31c6a27d8c9e912636f93bff7f511f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ATF472500805.
Tirolermedley: Tirol, Tirol, Tirol Du bist mein Heimatland / Anton aus Tirol / Bozner Bergsteigerlied / Wenn wir schaun übern Zaun / Die Sterne am Himmel / Vom Gamsbock die Krickaln / Bergvagabunden / Dem Land Tirol die Treue / Zillertaler Hochzeitsmarsch