Grant Doyle may refer to: Grant Doyle (baritone), Australian/British operatic baritone Grant Doyle (tennis) (born 1974), Australian former tennis player and coach
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 0x450d6dc64efbf81370fd28eff74b564aba0367208af182a2bd43b02555ef68e0. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ee5489f8-1b20-43a1-b8d2-90fcadd70b53.json and https://artists.proofprofile.net/proofs/artist/ee5489f8-1b20-43a1-b8d2-90fcadd70b53.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 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 0xea5afecaab014f3f6dd7f2cb94e280a3105f027d8298fec12e731fee3e58ec29. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/GBD9W2308211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad32193506f15750a85995f0599a0988f744551914e896ba7e9b6c5628d82ee. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/GBD9W2308220.
Gluck: Iphigénie en Tauride, Wq. 46 (Live)
Iphigénie en Tauride, Wq. 46, Act I: Introduction and Air: Grands dieux! soyez-nous secourables!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaac65cdcfa1b4913f0621042905b3938b2fedf8a3a59d8c848789c140e357206. Chain 2 (Bitcoin): anchored in block 960303 (2026-07-30T20:11:13Z), 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/USB8U1614144.
Iphigénie en Tauride, Wq. 46, Act I: Act I Scene 1: Quand verrons-nous tarir nos pleurs?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d93e00c830d8bfb0779a0815925b9877c9dd1df8cfe8d02bcf01a08cb9e03e. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USB8U1614149.