thumb|upright|Juliane Banse Juliane Banse (born 10 July 1969 in Tettnang, West Germany) is a German opera soprano and noted singer. Banse received her vocal training at the Zürich Opera, and with Br
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 0x56734d065292bcf8aacae3040c1560837fffff149769d623845e8b0540659f7a. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/65bd7f81-7ff6-46b5-a005-743dcab51f96.json and https://artists.proofprofile.net/proofs/artist/65bd7f81-7ff6-46b5-a005-743dcab51f96.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Mahler: Symphony No. 4 in G Major, GMW 37 (Live at Philharmonie im Gasteig, Münich, 2005)
Beethoven: Fidelio, Op. 72, Act 1: "Mir ist so wunderbar" (Marzelline, Leonore, Rocco, Jaquino)
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 0x438c981377fdbc34b50030a672885d1a056ec83caf348996d4851a1d5bd4f8b4. 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/GBAYC0301798 — a six-check JSON result.
Beethoven: Fidelio, Op. 72, Act 1: "Jetzt, Schätzchen, jetzt sind wir allein" (Jaquino, Marzelline)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa5b7b67e65e8c56790dae5495ec4d7ef01c0f5b592b7f682afb6a11acd6dbd. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/GBAYC0301794 — a six-check JSON result.
Beethoven: Fidelio, Op. 72, Act 1: "O wär' ich schon mit dir vereint" (Marzelline)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6257be9c3c454bdf3230b0e6a486128e3ee65ab318569e26878d8e4a781c9449. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/GBAYC0301796 — a six-check JSON result.
Beethoven: Fidelio, Op. 72, Act 1: "Gut, Söhnchen, gut, hab' immer Mut" (Rocco, Leonore, Marzelline)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed6ad09d6f732a35e87c89ed097cd452f7f8f252ab893c3bc51e17ba55e39ef. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC0301802 — a six-check JSON result.
Beethoven: Fidelio, Op. 72, Act 1: "Nur auf der Hut, dann geht es gut" (Rocco, Leonore, Marzelline)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67465271918907340aef14d7060663b4cd83bbb64ba6b5dd2e33988655abbfbe. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC0301803 — a six-check JSON result.
Beethoven: Fidelio, Op. 72, Act 1: "Marzelline, ist Fidelio noch nicht zurückgekommen?" (Rocco, Marzelline, Leonore)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x100241f6d2a1291a800e62acd93fa408b76281cc0e08eab3984c3069d1d26090. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBAYC0301797 — a six-check JSON result.
Beethoven: Fidelio, Op. 72, Act 1: "Ihr könnt das leicht sagen, Meister Rocco" (Leonore, Rocco, Marzelline)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e21ca8368582a07f1b536a81e8fc2c4ff6d976f2924474dd5a41b4dc8c0c435. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC0301801 — a six-check JSON result.
Beethoven: Fidelio, Op. 72, Act 1: "Leb wohl, du warmes Sonnenlicht" (Chorus, Marzelline, Leonore, Jaquino, Pizarro, Rocco)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ddaf58e1792ded919d6769fb3d2a0443616eae0e4a3f826efe473eb21e4b16e. 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/GBAYC0301815 — a six-check JSON result.
Beethoven: Fidelio, Op. 72, Act 2: "Wer ein holdes Weib errungen" (Chor, Florestan, Leonore, Marzelline, Jaquino, Don Fernando, Rocco)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d7a97123540068389462d34a26ef25128e6e2f915fe7ad787f08c5b1d0e76dc. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/GBAYC0301830 — a six-check JSON result.
Beethoven: Fidelio, Op. 72, Act 1: "Ach! Vater, eilt!" (Marzelline, Rocco, Jaquino, Leonore, Pizarro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe491a769b6867880a25d60a9d21fd5a1d89e8b01458926ddbb7e44fbbdd4709. 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/GBAYC0301814 — a six-check JSON result.
Beethoven: Fidelio, Op. 72, Act 2: "Des besten Königs Wink und Wille" (Don Fernando, Chorus, Rocco, Pizarro, Leonore, Marzelline)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9a68a4a435765bcb4de9942cde16b0826a5e9303054ab2c15720b1d36e3c1e6. Chain 2 (Bitcoin): anchored in block 960330 (2026-07-31T00:58:21Z), 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/GBAYC0301828 — a six-check JSON result.
Beethoven: Fidelio, Op. 72, Act 2: "O Gott! Welch' ein Augenblick!" (Leonore, Florestan, Don Fernando, Marzelline, Rocco, Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e2eb1bdec491a57bda8ce3ecb92cf0d4914a04671dea106d0a3b08e71d29570. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/GBAYC0301829 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x438c981377fdbc34b50030a672885d1a056ec83caf348996d4851a1d5bd4f8b4. 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/GBAYC0301798 — a six-check JSON result.
5 Lieder und ein Kanon, Op. 13: II. Wiegenlied "Schlaf, Herzenssöhnchen"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8c85d05c56cb10827e6d09dc1addffe90766feb7f9e582ad3294512e70650fc. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB111000809 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x071a803c3b0d83e7b5d4b0f6469c05ba9b38e81c30355c1da2246ec9125f9252. 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/DEB111104028 — a six-check JSON result.