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 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 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 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 0x3ca8daa07ba365e184934697a2445e7eac98eacd63de789e45a27874d7c0b365. 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/DEHC20831387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd9d20b62c77aa9d07eac98ae25c6bc129596c80994ba47bebef894ee5504e0e. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/DEHC20831390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c1893cd2f277d4d2a9445b8f177675267cdbceb1516e4428a2a1560753c09a. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/DEHC20831391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43c5d2ea070deb6ccd702ae288a89c528b7f97593a82c11760125254613f2a6b. 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/DEHC20831395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddf92972b109465d8c9c126e1c00f74c1c670c62651b6effc1a89c2b32170e58. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/DEHC20831403.
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: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ee6f0df9e3c9e7cd4e781c5a5a038acd3d3ac1d0a96ef630d8d6c96277e0897. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/DEB261801021.
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd16a2cd2e6f3fb50818c78e80fe745289aacc453d06b346816ca25723ea9af6d. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEB200962703.
Eben: Landscapes of Patmos - Okna - Concerto No. 2 for Organ
Eben: Organ Concerto No. 1, "Symphonia Gregoriana"
Missa in dedicatione Ecclesiae: Litaniae Sanctorum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb75506a57c92ef529da90f88ef2d6506977a32f57cd2e581622d264bee2c9b2b. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/CZA169801333.
Missa in dedicatione Ecclesiae: Kyrie XIII
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f184f10a3047bfddcb7913e49d6c382197e23e6989e51499657d7a018616c76. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/CZA169803333.
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 953520 (2026-06-13T13:32:09Z), 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/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 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/DEN421411002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ec62eb781d817a0a21a392bfe0711760d83e10afa68be312f920319224faf2. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/DEN421411003.
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 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/DEN421411007.
5 Motets of praise (Auszug): O magnum mysterium
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92e0983bd2c340085fae0b7e613d5d0eb0b635ba7c307380869685bb0ac205d. 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/DEN421411008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb0d878128e76eb2ded4f59b43568f1914558da78593432721fa5be42b958913. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/DEN421411009.
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 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/DEN421411010.
L'enfant et les sortilèges (Das Kind und der Zauberspuk, Lyrische Fantasie) (Bearb. Von Cytus Gottwald) (Auszug): Toi le C er de la Rose
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x428fea18e679e25ce891484281b5c9841897ffe47a30b73ddd760887b23f76d8. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/DEN421411011.
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 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/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 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/DEN421411014.
Es saß ein klein wild Vögelein (Bearb. Von Morten Vinther und Magdalena Bauer)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23e94304e2f4b7d4ead8062f0e174d1bc8eb872cb10c65b1a8edc748a7912fda. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DEN421411015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf5449be44bf90d21708be6fa8079a913d7d84404d1be7be6943ed0eb5c01020. 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/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 0xe02596b92efa17865592835199110d6b66d76ad87b0678a404b092d3c72c362f. 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/GBEYQ1627007.
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.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea21a3435c8afe59421cc34871c363c6626a8ed66d8a07afc13c5208d1576974. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/GBEYQ1627009.
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.
The Piper o' Dundee - Arr. for Piano by Richard Michael
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93c8baf411ec96d888650dbb0344635e27ec64b7e9851505a4a3734e8b6fad8c. 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/GBEYQ1627013.
Peter and the Wolf - Arr. for Piano by David Blackwell
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64564d3b07bf3043e9aed894da12a5bb45f00351f525983047a9d55f8d237e7. 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/GBEYQ1627014.
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.
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.