Wolfgang Koch (born 1966) is a German operatic bass-baritone. He is best known for his performances in leading roles in the operas of Richard Wagner. Early life Koch studied at University of Music an
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 0x73964743ab41fc9a340b28f6f7142b1606453030ce63294c30264fd63b3f8ef8. Chain 2 (Bitcoin): anchored in block 954728 (2026-06-21T18:08:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f8f6c941-5e7e-430f-874b-0cc72985320d.json and https://artists.proofprofile.net/proofs/artist/f8f6c941-5e7e-430f-874b-0cc72985320d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0xc5443aca6047ade4ac56c0213719d580d001ac6fd47cc62d4c5b2d7810ad9314. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USQX92205513.
Wagner: Parsifal: Akt I: Vom Bade kehrt der König heim
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cbc1184402068967a9298890a90f8b5af557f3238fe6deafb0924b576e04f03. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-21T17:18:00Z), 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/USQX92205522.
Wagner: Parsifal: Akt I: He! Ho! Waldhüter ihr
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ba947f33b9010467970d514c970bb53857114772694ccac155467a9d9cc1d4. 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/USQX92205514.
Wagner: Parsifal: Akt I: Zum letzten Liebesmahle gerüstet Tag für Tag
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e995652a816be2bdb8e5ccc99130c0b2413af25b74a95b59b7c7c611b92b36a. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/USQX92205523.
Wagner: Parsifal: Akt II: Die Zeit ist da
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c60ad5ee479cf8f4b9c64cdf9997513c253418550b66798cf3d37453643ebac. 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/USQX92205531.
Wagner: Parsifal: Akt I: Er naht, sie bringen ihn getragen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb72d8d75fceb896e13465cb21ecea34d551282fc008ca8099b0ac9aa11833ea. 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/USQX92205515.
Wagner: Parsifal: Akt I: Mein Sohn Amfortas. bist du am Amt
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3506be35d2335b6e6f8cba5c3868ad6eb3c41f76563c9f113de53d8a1c3fa46f. 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/USQX92205524.
Wagner: Parsifal: Akt III: Dienen - dienen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80457023d277738f9e25d5fa4255b047710dabf0fe005224cb529b8e620028c1. 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/USQX92205548.
Wagner: Parsifal: Akt I: He, du da! Was liegst du dort
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe989e8f91783d3c90656767831dfe73354a7ed4ed7a9a71c94b93e7abe81b357. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/USQX92205516.
Wagner: Parsifal: Akt I: Wehvolles Erbe, dem ich verfallen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d873892cef79916edd9471669abdde46b777dd9ea0263b72591286e51b9eae5. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-21T16:50:02Z), 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/USQX92205525.
Wagner: Parsifal: Akt II: Furchtbare Not
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9226fd799a7ea0907c9def3ad2f344b216bf3b05cc86ddd0b8a6ccc530a9f122. 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/USQX92205533.
Wagner: Parsifal: Akt I: Ja, wann oft lange sie uns fern blieb
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd062622997b8a2ce741af4ef522f6016018d81f9d8d7c360f9e88c9e3651f3. 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/USQX92205517.
Wagner: Parsifal: Akt II: Ho! Ihr Wächter, Ho! Ritter!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f8271c610156df321ccad70ec53b09e60cdda9db35fc39eb0aaf770d642987. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-22T05:26:23Z), 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/USQX92205534.
Wagner: Parsifal: Akt I: Wein und Brot des letzten Mahles
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe272b9d3633972eac38f6e7e5a6c8931dc2ee9c2629c004fa6ab173ec59972dd. 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/USQX92205527.
Wagner: Parsifal: Akt II: Hier, hier war das Tosen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf916b48be3280b5d4b41b603e2a0f17c57aade5ba79d21dd9852a354490a9bbe. 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/USQX92205535.
Wagner: Parsifal: Akt I: Vor allem nun: der Speer kehr uns zurück
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd25b341b137a737a6caae04194da46673850dd5910e388986d213f3a4d88fc48. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T01:20:25Z), 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/USQX92205519.
Wagner: Parsifal: Akt III: Werd' heute zu Amfortas ich geleitet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b008aa0ed1f94149dfcc2a68aca3246dda72da504967d3f780b1e255118132. 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/USQX92205553.
Wagner: Parsifal: Akt II: Ich sah das Kind an seiner Mutter Brust
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26fedf9a1d34486d83a2cca3870cc7e2b4b9f8105e368743816f6ce510f171ea. 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/USQX92205539.
Wagner: Parsifal: Akt III: Mittag, die Stund ist da
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a5ed13b1296a0d5c04d22695f872820ddf92f004978b402bd01b43f5269bccd. 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/USQX92205555.
Wagner: Parsifal: Akt III: Ja. wehe, weh über mich
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82d03b99a09af17876c41431674e1da015f0f9526df4b5ebcd31f8506046f5ea. 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/USQX92205556.
Wagner: Parsifal: Akt II: Amfortas, die Wunde!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c2683874c7aa57c407339250a17686ddbd8a9906bec29df433207d29c02101. 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/USQX92205541.
Wagner: Parsifal: Akt III: Enthüllet den Gral
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b3acc5df3fdfb272058cbd762b10f58056fc2f89436133de703860df3965886. 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/USQX92205557.
Wagner: Parsifal: Akt II: Vergeh, unsel'ges Weib!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f07e22cf7bf849a1ed752f74631eb9a1cd63049c22da04eea3bc947bc31e917. 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/USQX92205544.
Wagner: Parsifal: Akt II: Ach, ach! Tiefe Nacht
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc74c37b6b678d54228d913295911815de2f507d95c95800e0ca5f8c1dd0024fc. 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/USQX92205532.
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
R. Strauss: Die Frau ohne Schatten, Op. 65, TrV 234 (Live)
Wellesz: The Sacrifice of the Prisoner, Op. 40 (Live)
Salome, Op. 54, TrV 215, Scene 1: Wie schön ist die Prinzessin Salome heute Nacht!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23a59d938f3befdb72446fa4bfec249fb4624bbf8207384ed1ac9dd3a1a549bb. 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/NLE421600901.
Salome, Op. 54, TrV 215, Scene 2: Ich will nicht bleiben. Ich kann nicht bleiben
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0319df7c87f6db3659a37855a848acd2442ec934aa2e7262f9a04af33d9fa0c3. 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/NLE421600903.
Salome, Op. 54, TrV 215, Scene 2: Jauchze nicht, du Land Palästina
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb754778f7704f158c00ceb9169d79306c00ee8eb5e6b70fdfcbe94c276dfa6. 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/NLE421600905.
Salome, Op. 54, TrV 215, Scene 1: Nach mir wird einer kommen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f0c41740ddc91b09c8fa0e09ca7cdc197bf087e2f386caf6709774a0e3afc0. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/NLE421600902.
Salome, Op. 54, TrV 215, Scene 2: Siehe, der Herr ist gekommen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5071fbb94ccb8e6a8263df5c4954c0b623bdb722952bc20a9fd7cec6ce0e2b0. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLE421600904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f4a040d04a7a623dfa8d8d153e5fc93eedc4f60d1f7dd5198adebcc7066ae2. 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/DEB261800127.
Il tabarro, SC 85: E ben altro il mio sogno!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c00fcf48218cc2fab5785ee76995e825ce0e8c71eaa9f774cf9125747f30ed. 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/DEB261800129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57743725484c6aec861df1c4735fcc310b5fc21d39338f3aa85bacba38aafac3. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/DEB261800121.
Zemlinsky: Eine florentinische Tragödie, Op. 16 (Live)