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 0x470bcb7af4fd7378f89f173ca77d6ea6a067678c6c00abe50e91abc3c7649e2b. Chain 2 (Bitcoin): anchored in block 953618 (2026-06-14T09:16:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1c44244b-628c-44e7-aadb-a50f6afe0853.json and https://artists.proofprofile.net/proofs/artist/1c44244b-628c-44e7-aadb-a50f6afe0853.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
His Praises We'll Sing , Vol .4 - More Hymns from Gadsby's Hymnbook
His Praises We'll Sing, Vol. 2 (Hymns from the Young People's Hymnal)
His Praises We'll Sing, Vol. 3 (Hymn's from Gadsby's Hymnbook)
His Praises We'll Sing, Vol. 5 (More Hymns from Gadsby's Hymnbook)
His Praises We'll Sing - A Selection of Christmas and New Year Hymns
His Praises We'll Sing, Vol. 7 (More Hymns from Gadsby's Hymnbook)
His Praises We'll Sing, Vol. 8 [Hymn's & Choruses for Children]