John-Henry Crawford (born on January 21, 1993 in Shreveport, Louisiana) is an American classical cellist. Career He began his studies at the age of 5 at the Centenary Suzuki School, founded by his
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 0x786fdc40a45d85f01fdb0a3a66295f7d87b4af2786ddf8b0bbb583bf57ff55cc. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4c02f356-5358-457b-9927-a000aaa2f353.json and https://artists.proofprofile.net/proofs/artist/4c02f356-5358-457b-9927-a000aaa2f353.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Oblivion (Arr. J. Crawford for 14 Cellos)
2 Canciones mexicanas: No. 2, Estrellita (Arr. Jiji & J. Heifetz for Cello & Guitar)
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 0x67e493579556303177a306ae840dfb1c3f79abdb7db337a391391108df4068e3. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GBYDS2200032.
Variations on a Rococo Theme, Op.33, TH.57: VIII. Var. VII e Coda: Allegro vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010bb210434a65f6c033a3b3c8277c0e6faaa54cd1eda4f8a85c2dd0905cf6c7. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GBYDS2400344.