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 0x2f38f21f89e0887e18f9d929d8314b85f6b6bcd02cc36ed0787606271b6c9be9. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ecbff3c1-fc82-4a79-a496-a86d6842388c.json and https://artists.proofprofile.net/proofs/artist/ecbff3c1-fc82-4a79-a496-a86d6842388c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ultimate Halloween Sound Effects Collection – 400 Spooky Scary Horror Sounds
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 0x9e1749c3efb1e5f585a6d62107d74ffd0a4bd20f87ac80880c3b00d123fd3e8f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/US4R31007777.
Fart Sounds (Fart Sounds and Fart Songs)
Fart Sound Effects (Fart Sounds and Fart Songs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x531fb06510e747765bd3b81b7105e2997cb107be995aec5de1fe7dd24304355e. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:21:32Z), 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/US4R31217238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34cf925835c5a652c2d6f06d6c11f74692f4ae4f328deccd42b99206f680f829. 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/US4R31217312.