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 0x2a5c34c0a02f51e8a41266037670e30b0c4777c1e51a782cf9b24f6f728f5097. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/95b8612c-730b-411b-a9c1-4b0f8bdc8372.json and https://artists.proofprofile.net/proofs/artist/95b8612c-730b-411b-a9c1-4b0f8bdc8372.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Nur noch ein einziges Mal - It ends with us (Lily, Ryle und Atlas-Reihe 1)
Das kleine Bücherdorf: Sommerzauber [Das schottische Bücherdorf, Band 4 (Ungekürzte Lesung)]
Kapitel 1 - Das kleine Bücherdorf: Sommerzauber - Das schottische Bücherdorf, Band 4
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 0x3d2290b05f6c943adff84f70220a49e430fd98c79ea9675193547afc9f8d4e17. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DEXN92408055.
Kapitel 14 - Das kleine Bücherdorf: Sommerzauber - Das schottische Bücherdorf, Band 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4890811f99288eea5069423adfe289c066af644ba211d387d16142e4a48ec72. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T16:03:35Z), 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/DEXN92408068.