James Frederick Hanley Hist. Marker in Rensselaer, Indiana|thumb|300px James Frederick Hanley (February 17, 1892 – February 8, 1942) was an American songwriter and author. Biography Hanley was born i
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 0x264aa537b63f30fc62bcdd7ccc4bb59e9dcaa18ec8e66ac499e14d9cd6a1c04a. 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/e793ef71-e396-4553-b677-f9a6f5b7c0b9.json and https://artists.proofprofile.net/proofs/artist/e793ef71-e396-4553-b677-f9a6f5b7c0b9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
All That Jazz, Vol. 85: Plain Saxophone – Paul Desmond & Friends, Feat. Dave Brubeck (Remastered 2017)
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 0x341cc63d3631b83055bc0be437612e73dc20f78c7eb4e0aa152bd32609c18e33. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEL111700756.
Rose of Washington Square/Jazz Babies' Ball
Hits Of The 1920S, Vol. 1 (1920): Whispering
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63b0dd9b5c75de8a3f72ee6fee668276c66eba56336e2fc99698ba0042fd2bcb. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/HKI190216107.