Douglas R. Major (born 1953 in Berwick, Pennsylvania) is an American composer of sacred music and concert organist. He is the former choral director and organist at the Washington National Cathedral,
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 0xa9560d8dfc6d89f58a5fd90ec01188543cc9425b63d4ba86b7adae510d83ee4c. 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/e337d5fa-9212-4772-9d8c-fd9d600a7e41.json and https://artists.proofprofile.net/proofs/artist/e337d5fa-9212-4772-9d8c-fd9d600a7e41.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Great Organ of Washington National Cathedral
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 0x2088ac9adec147bafe7dcc92fcfb2c0e514c092687fc8de6577e8988c464befb. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/USG3E0305801.
The Emperor's Fanfare (after A. Soler's Concerto for 2 Obbligato Organs No. 6 in D Major)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd653b06ec9dd0cd6f180db08c6cea4bd4257a62d724ddf0da20964e23ee875b4. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USG3E0305802.
Water Music: Suite No. 1 in F Major, HWV 348 (arr. C. Mckinley): VI. Air
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86af717ebbee8d649eec49663efbad13c71cfd8802ad50df9058e4d4f0d1e990. 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/USG3E0305804.
Water Music: Suite No. 1 in F Major, HWV 348 (arr. C. Mckinley): IX. Hornpipe
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x897d5c3b5dafb32dab711c07936cb759ef6266ccafb84da1e9b420233c40bcba. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USG3E0305805.
Water Music: Suite No. 2 in D Major, HWV 349: II. Alla Hornpipe (arr. for organ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x616b2081fc93c7089cf0e4d7690969009b0d193ab2346a47dffe1664cfbe5f23. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USG3E0305807.
Herz und Mund und Tat und Leben, BWV 147: Jesu, Joy of Man's Desiring (arr. for organ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e596621b9172c2615f0fa5c873d21c3625711d7a00663e7b0423b7373e5ee38. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USG3E0305808.
3 Chorales for Organ: No. 3 in A Minor, M. 40
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec55066a531d613e02238eb4bd68ba8506bceb1bda3ae3e33c426576377d652. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/USG3E0305810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5749359883a11c1e516d76328acd01ab9f03a03604340cefe5fbf59ac875f372. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/USG3E0305813.