thumb|Edward Caswall Edward Caswall, CO, (15 July 1814 – 2 January 1878) was a clergyman and hymn writer who converted to Catholicism and became an Oratorian priest. His more notable hymns include: "
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 0x02e2e3841627bbfaa4664ffa49dc897cdabe4d6c932a76b16bd355db77cc9304. Chain 2 (Bitcoin): anchored in block 953875 (2026-06-16T02:12:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/08590ae0-5a0c-43eb-9d7c-a5ec0f23cc6a.json and https://artists.proofprofile.net/proofs/artist/08590ae0-5a0c-43eb-9d7c-a5ec0f23cc6a.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
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 0x2a9e20ad5bc8d8ed1d0e4a05b57d23844e4b9366f53d3b79511ab5dc3d74c2f6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA4N1301414 — a six-check JSON result.
Pange Lingua Gloriosi/Sing, My Tongue, The Savior's Glory
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87d1ac3d543ff4e31223d63f4fe35557686653b9c4834236a892392b00deaa1a. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA4N1300041 — a six-check JSON result.
Come, Holy Spirit, Creator blest - SA, Men
The Oxford Book of Easy Flexible Anthems
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3fabcbde6d5de4abe0580c31e4d5c5694f7aeeadd6611883eb1ff7c3634b700. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBN3Q1601103 — a six-check JSON result.
Glory Be to Jesus (Arr. Michael Leighton Jones)
Abide with Me: A Treasury of Classic Hymns
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da96ef2b3cb28dc13639dd84b0c10244206da2430fcb9e386bf74f09f31cda9. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUAB00650482 — a six-check JSON result.