Christopher Stephen Varcoe (born 19 May 1949 in Lostwithiel, Cornwall) is an English classical bass-baritone singer, appearing internationally in opera and concert, known for Baroque and contemporary
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 0xdfad614e1ec4722e3f41f2c1b98948f03f78f8bb6c16c813ec7b5d1f79587450. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ed9a0491-5908-4a42-8739-42bc932412c9.json and https://artists.proofprofile.net/proofs/artist/ed9a0491-5908-4a42-8739-42bc932412c9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Haydn: Nelson Mass, Ave Regina & Missa Brevis
Gottes Zeit ist die allerbeste Zeit, Cantata BWV 106: No. 1 Sonatina
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 0x6be9398d31ddcc8199396dbf4b319aa0bfa359cbef534d15e065d16cc2fdea99. 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/DEF058903802.
Gottes Zeit ist die allerbeste Zeit, Cantata BWV 106: No. 2 a-d "Gottes Zeit ist die allerbeste Zeit" ... "Es ist der alte Bund"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcef45ba4f343d5029e469701c200a6dbce0ea63d398451d5f0dc68e44fc78e4c. 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/DEF058903801.
Gottes Zeit ist die allerbeste Zeit, Cantata BWV 106: No. 4 Chor: "Glorie, Lob, Ehr und Herrlichkeit"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3428f3dc5c4086de39c169299fe7e3d6f5a8e95d71e5187272a4c88e4a6c027. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEF058903804.
O Jesu Christ, mein's Lebens Licht Motet, BWV 118
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3cf9827882e33c731fed14747f9625d0a3613dbb3fa73bc21306d7f896823a8. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DEF058903810.
"Lass Fürstin, lass noch einen Strahl" Cantata, BWV 198: No. 1 "Lass, Fürstin, lass noch einen Strahl"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x054c6b89e01e2dff3cf687ffb199dd874a2d285ff67ea3c5ca5f7988ee78450e. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DEF058931701.
"Lass Fürstin, lass noch einen Strahl" Cantata, BWV 198: No. 7 "An dir, du Fürbild großer Frauen"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70e9130fd62bfbd4c06b9d3b8f5e628fd270466cee2d72c029525a18f994f1d5. 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/DEF058931707.
"Lass Fürstin, lass noch einen Strahl" Cantata, BWV 198: No. 9 "Was Wunder ist's?"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae7a176e9165a614603e8153b7c03176f7ae82e96f90bb165ab64abc9e1b20e. 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/DEF058931709.
Gottes Zeit ist die allerbeste Zeit, Cantata BWV 106: No. 3 a./b. "In deine Hände befehl ich meinen Geist" - "Heute wirst du mit mir"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2820c7202443d47a029ec585968c08f5b7b3565a30d7891c78b17c4351c28fc2. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF058903803.
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 0xa162a037b0ba4283c721e73a7fd46449a65d831331c2975da16b23e5c53ca254. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBLWD9812801.
Mass in C Major, Hob. XXII:9, "Paukenmesse": II. Gloria. Quoniam tu solus sanctus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856e7c98ac81fdf501aa36d65e81ecc344df60cdba7d8fc3b7e7364e8872aed8. 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/GBLWD9812805.
Mass in C Major, Hob. XXII:9, "Paukenmesse": III. Credo. Et incarnatus est
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe10ea6070253c0abb4ed73c5de58407a3402d4fff406dd0a93203d3e35fbc254. 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/GBLWD9812807.
Mass in C Major, Hob. XXII:9, "Paukenmesse": III. Credo. Et resurrexit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44e0efe0a6e9204cd096b578cca509e10c58ab12993088099dba33dbb55c0cc0. 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/GBLWD9812808.
Mass in C Major, Hob. XXII:9, "Paukenmesse": VI. Agnus Dei. Dona nobis pacem
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb8f9e7ae23b7e6fc46ce3cd0f3f61ac311dab391362cacd7b5ed961de3e368. 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/GBLWD9812812.
Mass in C Major, Hob. XXII:9, "Paukenmesse": I. Kyrie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe884bc9afd4b0c06edc62f9a4fc78513e0ec1284082bd6627303e54765a7e26a. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/GBLWD9812802.
Mass in C Major, Hob. XXII:9, "Paukenmesse": II. Gloria. Gloria in excelsis Deo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6311a81d222d2a33855bf93ad802547a2a4592ae65c0a0b8d25319d13109b598. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/GBLWD9812803.
Mass in C Major, Hob. XXII:9, "Paukenmesse": II. Gloria. Qui tollis peccata mundi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ee70f52aaa47ae444b6cfbbde08cb8bf5070c1e4dbee419252dd4e6a9bf8dc. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/GBLWD9812804.
Mass in C Major, Hob. XXII:9, "Paukenmesse": III. Credo. Credo in unum Deum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8756e3dd78811d09e97770f6a468113cd634cb181433600203a3a597889a838. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/GBLWD9812806.
Mass in C Major, Hob. XXII:9, "Paukenmesse": IV. Sanctus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf0c6ff80bb315f97c20c66bcd7e83f2843485780e946146446ff7edaa4cb965. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/GBLWD9812809.
Mass in C Major, Hob. XXII:9, "Paukenmesse": V. Benedictus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x598e5efeb4e8665db9fecf889c0ee377aa04aa48609173b44c58b41dc514cf0c. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GBLWD9812810.
Mass in C Major, Hob. XXII:9, "Paukenmesse": VI. Agnus Dei. Agnus Dei
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda278aeddb2604d2b9d97a6d4b90ff79482363904517cce4d3701fddd13bbe4f. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/GBLWD9812811.
Johannes Passion, BWV 245, Pt. 2: Arioso. "Betrachte, meine Seele"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c33178ef462e6d65f95267eb8925d6f87eb6c3dfd6320c6e8458f1a03f21b41. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/NLY331208303.
Johannes Passion, BWV 245, Pt. 2: Aria. "Eilt, ihr angefochtnen Seelen"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a0f86d8d2123348fc41691fb18ad72839788810b8f0af090478cd16becba60. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/NLY331208308.
Johannes Passion, Appendix: Aria. "Himmel reiße, Welt erbebe"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x130ba9c3ddaa8556abbe3db8e514b38282c831f6f5a31a89797ffa00799634a2. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/NLY331208326.
Passionsoratorium: O Seele, deren Sehnen aus heil'gen Augen weint (Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86a0ae192bd6f4ef49684ba0fe8e02700cfcacc330b8e25fdcc49311f918bc05. 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/USB8U1010404.
Johannes-Passion, BWV 245, Pt. 1: No. 10, Recit. Derselbige Jünger (Evangelist, Maid, Peter, Jesus, Servant)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d9fd98363ee32dbf04605332fa77b9a31608b47c3aa8b0466f33eba535e53fa. 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/DEF058630029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4174055dc04dd02aa0865b1278f38fbafd2858df775c4f033e88f39d7fda066. 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/GBAYC9705133.
Cornelius: Weihnachtslieder, Op. 8: No. 3, The Kings
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e2bfa82e03f5c16529f0223f5e332ac626689da752339b43cc2abf4a4300c7. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/GBAYC9705136.
Passionsoratorium: Kommt! Lasst uns anbeten (Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a8eb873696c1eb0732b132614bf655373e9626e4824695618251f54335af15. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/USB8U1010405.