thumb|right|200px|14th-century wall painting depicting Gero in the church he founded at Gernrode Gero I ( 900 – 20 May 965), sometimes called the Great (),Thompson, 486. Also see Lexikon des Mittelal
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 0x507a80a38fee4d078b86b0c2cb68a7eb6ee7d8fad1b52823f058b99dedb9975b. Chain 2 (Bitcoin): anchored in block 953783 (2026-06-15T12:24:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d651a0ef-dbe7-48e7-a629-a61dfc14cda2.json and https://artists.proofprofile.net/proofs/artist/d651a0ef-dbe7-48e7-a629-a61dfc14cda2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Braunschweiger Eintracht - Du bist mein Verein
TVアニメ「臨死!! 江古田ちゃん」エンディングテーマ曲・第5話
TV Anime "Rinshi!! Ekoda-chan" Ending Theme Song, Episode 5
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 0x017913d6abe22d91f68773a85368cf3a62f3a4bb2060640c644e80991dfd8321. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/JPX401500061.
ハニワ10セレクション ～恋のすごろく編～
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x017913d6abe22d91f68773a85368cf3a62f3a4bb2060640c644e80991dfd8321. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JPX401500061.