thumb | Mr. Thank You (1936) by Hiroshi Shimizu is a 1936 Japanese comedy-drama film written and directed by Hiroshi Shimizu. It is based on a short story by Nobel Prize-winning novelist Yasunari Ka
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 0x202ebcb6aa0e52c64deb208f877974e9f80088a7608101139140e6af7bc37c87. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5aa3a4b8-5c1f-4e06-a01a-04f7d4b8de7c.json and https://artists.proofprofile.net/proofs/artist/5aa3a4b8-5c1f-4e06-a01a-04f7d4b8de7c.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 0x2ebf59a28fab27d86ed531293588b3700fbd5e046bfbf19d9e9e797cd0597dbc. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/QZS7J2336018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb6da951b0f7b985046a3d2d2af43159afea1d0c1b15674e14f2cc3513dabc8. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:01:09Z), 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/QZSYP2313885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4335044f3f5c57414f288985ea11d19f74224a5dbe069b6df7a199411dca274. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZSYP2373434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8fb3ee554fb36b3f7a269c54e5193156d5a80e7d72a0a2d77326cf18852d068. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZQAY2464496.