Philipp Ahmann (born 1974) is a German conductor, especially known as a choral conductor. He has been the director of the NDR Chor from 2008 to 2018. Since 2020, Ahmann is the MDR Rundfunkchor's artis
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 0xfc014dba5b9d9a608809b14b436d53b26636417b6003e22b6610bc0db37e1fb7. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/daca487f-c93f-46e9-80f4-b80e7f69630f.json and https://artists.proofprofile.net/proofs/artist/daca487f-c93f-46e9-80f4-b80e7f69630f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Missa brevis, MWV B. 57 "Die deutsche Liturgie": No. 4, Ehre sei Gott in der Höhe
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 0x9a419c138bb06e0ed831d7e3962fbdc5c04b2e00bbf53357938afabdc28bdadd. 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/NLE422306408.
Denn er hat seinen Engeln befohlen über dir, MWV B. 53
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d3f1810766629713072f51bdec771ccdb5c85b15f800af39c958dcd2a72d73. 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/NLE422306412.
3 Motets, Op. 69: No. 2, Jauchzet dem Herrn, alle Welt
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeab84c26c48d0cd9731d74c3c4950128f44011eefb82b268b3f5453bf90b785. 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/NLE422306414.
3 Motets, Op. 69: No. 3, Mein Herz erhebet Gott, den Herrn
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe49c57aa4c53d1a81ec151d05acdbb42f9fd942ee71c55f52e81dfead1012e9b. 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/NLE422306415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c81c811c65c5bbc3efab95187e564edfa751c590d17daa263536d23e134e4d. 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/NLE422306416.
Christmas Songs from Germany & All Over the World, Vol. 2
Weihnachtslieder aus Deutschland und aller Welt
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5722635632135e6f7b25bed1ca717c7f7c7d77b4b87edf74cec74eef4d39ecb. 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/SEAEX1676020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e4c4e025983367534d5bdd79e3a24d0dbf138feac9008cc686d610607c98c9. 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/SEAEX1676030.
Adeste fideles (Arr. C. Thiel for Mixed Choir)
Frizzante: Celebrating Vocal Music Celebration
Es ist ein Ros entsprungen - Weihnachtliche Chormusik
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x886e6360188e0be2c68ca9b54af13092bd3adeea1e53a5d13b7043f62ba0d866. 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/DET901538101.
Shchedryk (Epiphany Carol), "The Carol of the Bells" (Ukraine)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c337c35eab1b80da3f145329ae4b476d5f83eccc230596c115ad2bac581c7a. 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/DET901538114.
Stille Nacht (Silent Night) (Salzburg, Austria)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf864eb21a5962cf4d3f57bb9b302fb7c6e428199ea8788ff6d45659fef52e765. 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/DET901538128.
Nine(Birds)Here [Works for Choir and Saxophone Quartet]
Quatrains Valaisans, Op. 206: I. Pays, arrêté à mi-chemin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ec21632c78898a434b44bdf6c10c17d35b2c2e98661b9fb8d88f15d9b80eb2. 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/DEB421801001.
Quatrains Valaisans, Op. 206: III. L'Année tourne
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe8822dcc89a49848af0b0917156041633c557570d136debd2e4f1ec2699045. 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/DEB421801003.
Quatrains Valaisans, Op. 206: IV. Chemins qui ne mènent nulle part
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e5ec2a19bac0e44b6cdf59bb050724ac9717666c9a6e18a23fc9e95801970f. 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/DEB421801004.
9 Sacred Pieces: No. 1, Cheruvimskaja pesn' No. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f37cc71d1cdd9a9536bb50bb9eae2e3b9bad12879a9ea8aad82c2ead60a30f. 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/DEB111601001.
A Quattro Cori (16-Stimmige Werke für vier Chöre von Fasch, Benevoli und Mendelssohn)
Christmas Songs from Germany & All over the World, Vol. 3
In coena Domini ad missam, MH 628: No. 2, Christus factus est
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a059085f7062a34c90d995bf0be15ddeb25bbf26a54f0ca5ddea84991a20b0. 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/NLE422003810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8244e623cc2522e89ec40e16345e76ccf84b36d9252f6af1e466954074325e93. 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/DET901748406.
Also hat Gott die Welt geliebt, SWV 380 (Version for Unaccompanied Choir)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6d86b6884ad3778cb17e7d2a68f29e4865189a56b43a7631150a224226c42d1. 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/DET901748424.
Mendelssohn: Missa brevis, MWV B. 57 "Die deutsche Liturgie": No. 3, Kyrie
Mendelssohn: Denn er hat seinen Engeln befohlen über dir, MWV B. 53
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d3f1810766629713072f51bdec771ccdb5c85b15f800af39c958dcd2a72d73. 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/NLE422306412.