David Hill may refer to: Arts and music David Octavius Hill (1802–1870), Scottish painter and arts activist David Hess (1936–2011), American actor, singer, and songwriter, also known as David Hil
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 0xd485db7cb2037b73d19bc10b838400456b6979af0652d7baf835f7e8b53aa213. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ccbe4f0a-ab8a-48e6-932a-c6c9bb52397e.json and https://artists.proofprofile.net/proofs/artist/ccbe4f0a-ab8a-48e6-932a-c6c9bb52397e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hadley & Sainton: Choral and Orchestral Works
Spellbinding Classics: Classical Music for the Witching Hour
A Guided Tour of Nationalism in the Romantic Era, Vol. 8
Orff: Carmina Burana, Introduction, Fortuna Imperatrix Mundi: O Fortuna
Orff: Carmina Burana - Holst: The Planets
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 0x6c48107d2226f3d558660dd0df7fcb0ac0c83cac22be5f44f5ce1eec41101fad. 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/GBAYC9400066.
O Come, O Come, Emmanuel! [Arr. for Choir by Thomas Helmore] - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f05ed8fdd045d9e3cf4deafa0713abd392161b650209ba7b695deea766403e. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/GBLLH2376807.
Fauré: Requiem, Op. 48: IV. Pie Jesu (1893 Version)
The Most Peaceful Classical Album in the World...Ever!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde340f457d6148dfe35ccc926db629f8259905cd93a1b6f07ee6f4b0af398050. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GBAYC9600115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba486fd9ddfc7f33281ce50ccf0d13035b1b0901f37f693a1cad1299ec77489. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBF079042312.
Joshua, HWV 64: See the conquering hero comes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb23c34a3eb6509ccd307ae9768aa02dbd610567140e3ba39d1ebbfbf2cad82a8. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/SEAER0936110.
Barber: Agnus Dei (After Adagio for Strings, Op. 11)
Sanctus: Himmlische Klassik / Heavenly Classics
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd711f40959feef6475f349e9f93cd38c80e711c16a1e8aa700c08209474e4fdb. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBPFW0600046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x362f898e1448309a50b95542bcabb06dcf4340e6e013a57901ff4d3d491a29d6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBPFW0700003.
Anthem For the Foundling Hospital, HWV 268: 7. Hallelujah!
Handel: 4 Coronation Anthems/Dixit Dominus etc.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e679add748c4be7cad7800ec526431f9d3db7667d868db4dcd4351045e3a4a. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/GBF079310817.