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 0x49318f6845cb63639db9f79f5a0e60440ca23b625fd70c727b198441db55d6a2. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d0c4b084-1bd7-4141-80a5-aac1fee19528.json and https://artists.proofprofile.net/proofs/artist/d0c4b084-1bd7-4141-80a5-aac1fee19528.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ciconia When they Cry / Platinum Empireo
Ciconia When they Cry (feat. Pomexgranate.)
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 0x2fd0bf4948af1d9b1d1b9dbb9f990ee6d294dd0ce451a0ef7022e4edb4d74643. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCJPJ1974573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab077fb57530f551b1617fa82a74c1941acb64924701c0eae83d489874731011. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/TCJPJ1974575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83bd7757c2b123d225ebc1035adb652af78416bd34cd37cfd6d011888865bf62. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:51:02Z), 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/TCJPJ1974576.
Higurashi When They Cry ImageSong ~Yuennooto~
Higurashi When They Cry ImageSong ~Hibikiwataru~
Higurashi When They Cry ImageSong ~Tsumugiirodoru~