Petr Eben (22 January 1929 – 24 October 2007) was a Czech composer of modern and contemporary classical music, and an organist and choirmaster. Life and career Born in Žamberk in northeastern Bohem
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 0x0511a4547f07399a35e0eedb530353002df8647abdea650afb59dfc1362a638a. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4015b228-9517-409e-8776-e4286475a655.json and https://artists.proofprofile.net/proofs/artist/4015b228-9517-409e-8776-e4286475a655.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Starke Stimmen, helle Köpfe - Motetten, Madrigale, Volkslieder, Folklore
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 0x43c5d2ea070deb6ccd702ae288a89c528b7f97593a82c11760125254613f2a6b. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DEHC20831395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe443d6317c3a9913340289650ebad775a7ac58fa3526c0ef015e6bcc36842f0b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEHC20831404.
Trumpet Sonata in D Major, Z. 850: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3512faed4d43e4b358a3c63e10d23c065b68fac148e19d1b0f0d2b2b14a8ef. 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/DEB261801022.
Eben: Velvet Revolution Complete Organ Music Vol. 1
Eben: Geistliche Werke für Gesang & Orgel
Novák: Saint Wenceslas Triptych - Eben: Suite from Faust
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc05a674a6b0457758263e076f7e6438d6193caae52d1f2fcb22c74658ed9cbb3. 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/CZC661700316.
Eben: String Quartet "Labyrinth of the World and Paradise of the Heart", Piano Trio and Piano Quintet
Eben: Salve Regina & Sacred Choral Works
Eben: Landscapes of Patmos - Okna - Concerto No. 2 for Organ
Eben: Organ Concerto No. 1, "Symphonia Gregoriana"
Dvořák, Lukáš and Eben: Czech Sacred Music
Petr Eben, Faust for Organ, Hommage à Buxtehude
Eben: Sunday Music, Laudes, Hommage a Dietrich Buxtehude
Eben: Apologia Sokratus. Ubi Caritas Et Amor
Lacappella: Shimmering (Works by Ola Gjeilo, Simon Wawer, Eriks Esenvalds, Clytus Gottwald, Robert Schumann)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce07042dee1f755050da717dfea9bce9e638d7bdb13e498a36ad8a8a710dbcf. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEN421411001.
Motetten über gregorianische Themen, Op. 10 No. 1-4 (Auszug): Tota pulchra es
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x645dac933b0b10510e1c5faf0aff336ce29d7537a6bac90b38226a3864375e51. 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/DEN421411002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de4a21f296382e47cf761e5f6223d24547c5307962528e7c3966a2fd184cadb. 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/DEN421411004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb281ac7816dbaa6e6e24568d8f9e56ce953e8fcbe65b26fc71655bcec26a77. 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/DEN421411005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda949f10d26d6ad776d1dc708a63edbc79748df67ff1ae171f5b33f41204ec62. 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/DEN421411006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d8754c10c121e611e08351fdb5083d2d983e74dd51305e9c11b0a939f1a24be. 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/DEN421411007.
5 Motets of praise (Auszug): O magnum mysterium
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92e0983bd2c340085fae0b7e613d5d0eb0b635ba7c307380869685bb0ac205d. 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/DEN421411008.
Schlichte Weisen, Op. 76 (Bearb. Von Cytus Gottwald) (Auszug): Mariae Wiegenlied
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05673c8d31dd5d73e043bfb67d35efa050138569ffc4a1b7147f368727fa9480. 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/DEN421411010.
Romanzen für Frauenstimmen, Op. 91 (Auszug): No. 6 In Meeres Mitten
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8eb37b5d4ff08a2e8df0ca31357892ea7ed7eb65d79cf67eb02d1446b0a81b8. 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/DEN421411012.
Romanzen für Frauenstimmen, Op. 91 (Auszug): No. 5 Der Bleicherin Nachtlied
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddcc242cc8b4572e4792b7a299573d0e3c750541e3ee2b1700c3b6bfbe144fff. 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/DEN421411013.
Romanzen für Frauenstimmen, Op. 91 (Auszug): No. 4 Das verlassene Mägdlein
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeea724c14644ca058e5845260eb9c7b3ae5d293cd4c25c5cb7c836c5e4050989. 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/DEN421411014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf5449be44bf90d21708be6fa8079a913d7d84404d1be7be6943ed0eb5c01020. 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/GBEYQ1627001.
Die Zauberflöte - Arr. for Piano by Christopher Norton
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf340315a1d200257e6a3d97dbf13e0e8620ebb31f74d1486345cb40e829ded2c. 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/GBEYQ1627002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa753e453f7067dec96e9e408adb0b8d52992743825c6777b7318ed67664e56. 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/GBEYQ1627005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e42fd22d7fa0c20081910822f41831b29991ea4440cf96d7d74cd7da456b5dc. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBEYQ1627008.
The Planets - Arr. for Piano by Quintus Benziger
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81c91b350a5a078070f6a7634de02ccabbd6e914661dda4c7feef055ece93005. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBEYQ1627012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6b86c68a2ef80406233a65cb57b04bcdfb2b0133673751b146d391db484d9e6. 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/GBEYQ1627017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f623829c0330e3f239bd76739ab51a47d889647a729d48e34739405e83a356. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/GBEYQ1627016.
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