Christian Hommel (born January 23, 1981) is a German former professional ice hockey left wing. He most notably played for the Iserlohn Roosters in the Deutsche Eishockey Liga (DEL). Upon the completio
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 0x93437a137d1b55a6d23c95e8a8cb5102f030a40d1b5ff3e9cd7fa72cbb25b898. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fa8b44fa-0d14-4f20-b2ea-710b0044ed8d.json and https://artists.proofprofile.net/proofs/artist/fa8b44fa-0d14-4f20-b2ea-710b0044ed8d.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Only Bach - Cantatas For Soprano, Violin & Guitar
Cantata, BWV 197 "Gott ist unsere Zuversicht": Aria "Vergnügen und Lust" (Soprano)
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 0x2237e05347d271d64d3b537bd30f75746440a4624da12e9a8d9ec7c1a7650e6a. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRUM71400013 — a six-check JSON result.
Herz und Mund und Tat und Leben, Cantata BWV 147: Jesus bleibet meine Freude
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e5723c4c37bcae1f6e2f6b37afb4c5bdcd85a3aac602cabbc9cb23c5bb91998. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRUM71400014 — a six-check JSON result.
Chorale Prelude "Wachet auf, ruft uns die Stimme", BWV 645
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46fb24f28885fe49f4d49aaaa880e3386a67556cdafddb6d5f63247ffa691553. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRUM71400015 — a six-check JSON result.
Ich geh' und suche mit Verlangen Cantata, BWV 49: Aria "Ich bin herrlich, ich bin schön" From Cantata, BWV 49
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1269750662afa3284a850ec26feb6d2c3da46e445e72ad43f222cebb8e2b8984. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRUM71400016 — a six-check JSON result.
Cantata, BWV 68 "Also hat Gott die Welt geliebt": Aria "Mein gläubiges Herze" From Cantata, BWV 68
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1183bf8bc276b67e8641849fc8755f8bbe2574f0a30c6d38e50e46c10d57031. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRUM71400017 — a six-check JSON result.
Ave Maria, CG 89a, arr. from Bach's Prelude in C, BWV 846
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68dd0858824b53bcdf93a209a10768553f73e53194f92e8014df067d452f8503. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRUM71400018 — a six-check JSON result.
Cantata No.55 "Ich armer Mensch, ich Sündenknecht", BWV 55: Aria "Erbarme dich" From St Matthew Passion, BWV147
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b6e4b89d11f31e12fc5f11c875b3c31e13ab364d3bfe98db17f55247452c5a. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRUM71400019 — a six-check JSON result.
Herz und Mund und Tat und Leben, Cantata BWV 147: Aria "Bereite dir, Jesu, noch itzo die Bahn" From Cantata, BWV147
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36a1cd6cadb74bbc18a335df319085e7bfe7d3eef776fb65932f4dc0c0d037a2. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRUM71400020 — a six-check JSON result.
Chorale Prelude "Nun komm der Heiden Heiland", BWV 659
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb75e09a0aea441f4b56a2502fa59ed80ef8df42dd4751e6e780d53efa31734ea. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRUM71400021 — a six-check JSON result.
Liebster Jesu, mein Verlangen Cantata, BWV 32: Aria "Liebster Jesu, mein Verlangen" From Cantata, BWV 32
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e8feb822117cb4cda170188be191fc1f285ac210e06be156f63c2a19a6cc8c. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRUM71400022 — a six-check JSON result.
Aria "Er segnet, die den Herrn fürchten" From Cantata, BWV 196
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c27ef2452ccc5658175db36469f45205ddac6577999b73cfb5f144aeefce301. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRUM71400023 — a six-check JSON result.
Chorale Prelude "Ich ruf zu dir, Herr Jesu Christ", BWV 639
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc173d87a60a6276966a793b79f073f290f2385369426d35d3ed6432c87ae9bf4. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRUM71400024 — a six-check JSON result.
Was mir behagt, ist nur die muntre Jagd, Cantata BWV 208: Aria "Schafe können sicher weiden" From Cantata, BWV208
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd60f9e7e8e3d3c2d8fd40621a8fa778fb0a4ce171b31939b76cd7e3a18048430. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRUM71400025 — a six-check JSON result.
"Bist du bei mir", BWV 508 Aria: Bist du bei mir, BWV 508
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ec29a57197265a41e592bb418005211c0e87493ca7519fe4680e6f70569edad. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRUM71400027 — a six-check JSON result.
Concerto for Oboe and Violin in C Minor, BWV 1060: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14112dc01845ff1409463339744d746ac2a37287e13be2d3ea313f505fc54a5f. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199910614 — a six-check JSON result.
Skona Grona Dagar (Beautiful Green Days)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bbafc454b1ff6d847fab41c079517f058516a7df5d74d8e48f639b106ac321e. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199711314 — a six-check JSON result.