Charles C. Ritz (born Karl Cäsar Alexander Ritz; August 1, 1891 – July 11, 1976) was a French hotelier and fly fishing specialist. Like his father César Ritz, he was the owner and manager of Hôtel Rit
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2163cbc7a80cc20f1cb8c748e237f9b0dd743e493600e474e479d83f3e5aefb5. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3e77b4fe-823f-4760-bdd1-32525bdf6ce6.json and https://artists.proofprofile.net/proofs/artist/3e77b4fe-823f-4760-bdd1-32525bdf6ce6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Kokiri Forest (From "The Legend of Zelda: Ocarina of Time")
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63c602a847cf91b5cba521ce163faf86c482a8a15c5f04ff2d52dcbaf1ccf204. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZPJ32172052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x061fde8b2b9b0b48a2d16aa2456bc2ca759a709feba69b463c4c4782fd858e27. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QZ6K41901156.
Prelude (From "Final Fantasy II") [Feat. Soundole VGM Covers, Toxodentrail, Bassoonify, and Matthew S. Harrison]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20fd53b9246fb8d5b36d2f2395b3e332c39d301fb219c073532c9687b996a926. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USE831592945.
Through the Sacred Realm: Ocarina of Time 25th Anniversary Album
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db6fe9a800eb6835c6a2c9734d52752f7df7b04345eeafe594bf79bd3e75068. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/QZPJ32323318.