Sir Joseph Barnby (12 August 183828 January 1896) was an English composer and conductor. Life Barnby was born at York, as a son of Thomas Barnby, who was an organist. Joseph was a chorister at York M
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 0xe516fa3252448dcecfa66e2f0126ed3bde0f02cc3972e5ba97ac27c085628d17. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7dae6da9-334e-437a-ba2f-4cd9658c15d7.json and https://artists.proofprofile.net/proofs/artist/7dae6da9-334e-437a-ba2f-4cd9658c15d7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Psalm 7 "O Lord My God, in Thee Have I Put My Trust"
Psalms of David, Vol. 1: Hear My Prayer O Lord
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 0x011c8bc50f010751f005745dc076cc8ec419475b50d013f87c418b68b5627150. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBXUX0829017.
Sweet and Low (arr. J. Lloyd Webber for 2 cellos and piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52ca8b143a0cc5d0a86892f5390de2ddc6c8ebdcd4e79d26397c5d2b6a5944fd. 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/HKI191331119.
Laudes Domini "When Morning Gilds the Skies"
The Complete New English Hymnal, Vol. 22
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aa30bcd5722e03c4d8815b4c40578caa31a944a4701f12e5377d98767583828. 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/GBXUX0872201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee6badf18c8758001b887927c7228d94213e411c9b10db33af8f8b3316f7f685. 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/GBAJY9400207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab8d91ce5d7cbd78013e7e05a45c9843ef4c6d4d813198b891453394658881e. 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/GBC7N1041011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969ddc3c1166a0acb503ae68bb736b75f5399608642307af2aa56b5d0e462b27. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/GBAJY9510309.
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 0x8659b8e16567ea0db2907aed7b00ca2ecb86b9a36b5abdeb15132af5bb38ee88. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/GBAJY9500404.
O Perfect Love (Arr. S. Murphy for Mixed Choir) [Live]
2022 Texas Music Educators Association: Texas All-State Mixed Choir (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x473bfda336d7026ef6e4846c6a25a6f0ac158576a4f110d0eeda6789a9495140. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/USVZX2208905.