Robert Crawford may refer to: Politicians Robert Crawford (died 1706), MP and governor of Sheerness Robert Wigram Crawford (1813–1889), British East India merchant, governor of the Bank of Engla
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 0x59ee7dc38c6fd03cb37bcfcbe2c5f0fc7d7563b16b9e43972539a1c66bb83a94. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/85069e37-9084-4121-b778-0666a7c40b07.json and https://artists.proofprofile.net/proofs/artist/85069e37-9084-4121-b778-0666a7c40b07.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Robert Crawford: Music for Piano and Strings
Off We Go into the Wild Blue Yonder (The U.S. Air Force Song)
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 0xef1850875ea8b897edd167050c7134a3e0921bf22f777103a957047d66d6b5aa. 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/USA5R1134644.
Off We Go Into the Wild Blue Yonder (The U.S. Air Force Song) [Chorus Version]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21af5605abbb8682a83ec0f48557008c521630bca13e658ca5f37dc3d000236e. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QMM9G1400130.
Selections From Victory At Sea, War And Remembrance & Other Favorites
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9048fe659754d153534f31d5d601fc7b5361b8208547d932d477008c28626503. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USTE10315175.
The United States Air Force (or, The Army Air Corps Song)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ac600d189858f6d72f4d3ba448e4093b551e9d56ce3e08941a2f3ec96f6d83f. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:59:05Z), 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/USSM17300899.
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
Off We Go Into the Wild Blue Yonder (The U.S. Air Force Song) [Instrumental Version]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x876d24357a81cb2a62df05d8f9d23b9b17a91f6bc917bb3ffa7fb6a62f3054a2. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/QMM9G1400102.