thumb|Kim Borg in 1965 Kim Borg (August 7, 1919April 28, 2000) was a Finnish bass, teacher and composer. He had a wide-ranging, resonant, warm voice.Gramophone obituary (July 2000) Biography Kim Borg
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 0xf75d2d6e6cd13dc33ef8271d4c4e188a3d69b06c8ee08db10c1c952c4e97815e. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2ba8603d-5918-45cb-8d56-621379c4221c.json and https://artists.proofprofile.net/proofs/artist/2ba8603d-5918-45cb-8d56-621379c4221c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Czech Philharmonic Orchestra / gem. Chor und Orchester spielen: Antonín Dvořák: Requiem fuer Soli 5
Czech Philharmonic Orchestra / gem. Chor und Orchester spielen: Antonín Dvořák: Requiem fuer Soli 2
Bruckner: Grosse Messe Nr.3; drei Motetten
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 0x8e14c798242a4c903a9fd803d0e17caf1cf59ce95c16f14473b474ebdfbf334c. 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/DEF056601520.
Missa Solemnis in D Major, Op. 123: II. Gloria: "Gloria in excelsis Deo"
Beethoven: Missa Solemnis, Op. 123 & Fantasia in C Minor, Op. 80 - Haydn: Mass in B-Flat Major, Hob. XXII; 12 "Theresia"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf8efe4358bc9b52007b865c38e62369cbe3fa61e61527c0f5ff301701115e3. 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/USSM16001037.
Missa Solemnis in D Major, Op. 123: II. Gloria: "Quoniam tu solus sanctus"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2dcf8e0dced6a841c6143d5af70370a45427640d0f90d765a15b989b4f19413. 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/USSM16001039.