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 0xa7f20f086e8ff8fa74e1b2eb83c2e2b53d1fc7adb633cb2e5f722aa3aad7f211. Chain 2 (Bitcoin): anchored in block 954516 (2026-06-20T07:04:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a173aada-e217-4e64-83f1-c70ef21e033b.json and https://artists.proofprofile.net/proofs/artist/a173aada-e217-4e64-83f1-c70ef21e033b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Josef Gabriel Rheinberger: Musica sacra (Box mit 10 CDs)
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 0xcf8e5f3889dbcf4d32bd6aa452469c819a35b3f80bdbd089afdce22285a22f57. 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/DEB111502508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba0ae1579787b4102bc2871bf9049d86549401e3008f27f14a26e6211992f73. 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/DEB111501610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe03f58782c117eba0875ba246f990aa00983f401e91b2e439844ddf24e32fbad. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/DEB111501814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77541cac25396630d7795a707bafefb2da4d3a0d5883266bcaf859d3b5918ede. 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/DEB111501816.
Libori Festmusik aus dem Hohen Dom zu Paderborn mit Domkapellmeister Thomas Berning
Josef Gabriel Rheinberger: Christus factus est (Musica sacra VII)
Missa in G Major, Op. 151 "St. Crucis": I. Kyrie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c31cda061a80535ea6d82ae46d88d2861c389614e1165ef1b471ac9b37fad27. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/DEB110300101.
Missa in G Major, Op. 151 "St. Crucis": II. Gloria
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2946d6c195e315475585e2e1fac966c89e60caf1edaca4e3c4489b15ff318b3e. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/DEB110300102.
Missa in G Major, Op. 151 "St. Crucis": III. Credo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d52e429a8453ff3c881268c6dad9dfbd3a7a7374f3e87afb717721037d1275. 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/DEB110300103.
Missa in G Major, Op. 151 "St. Crucis": IV. Sanctus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1023d818d7bcdfcb92b7d6625b7e1a9f2b5805f8e22fd164998de8b09ee31068. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/DEB110300104.
Missa in G Major, Op. 151 "St. Crucis": V. Benedictus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f900ea27b5772b2b55d31fb9da47a7dc0dd1df0420d4207cb427b7d43f34a6. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/DEB110300105.
Missa in G Major, Op. 151 "St. Crucis": VI. Agnus Dei
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0303e9d4d05f6a38f19faa7fdadce6f28db68d1c012327a8cf2dfd2505cc3da4. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB110300106.
Advent-Motette Op. 176: III. Ad te levavi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7533c60fb5685a20f0d9ef878ab185499a41d01444a452a21ff09bf27c6a5cb. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/DEB110300107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5fdc79033f40aa3ce97dfc23664811cf33d2268c86b1d4e8730ed93094e126d. 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/DEB110300108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d4d334bca2a492c916bb3e6e23d5fdeb14f3f43de509cdd99ce19d244759f52. 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/DEB110300109.
Advent-Motette Op. 176: V. Deus tu convertens
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x640608ac45e6ca9538e26cf570a0227f25f9d7aa99fc9e1b6e5d1e455bc3e912. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/DEB110300110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7ba30b11a5de86a626dceb80b28a83eb5db61fa4cafc3b1c8724aba2a12c829. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/DEB110300115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60bbe06fa8010c58d330fbec0740c371041758da51966ebbc3841609d9df0cc9. 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/DEB110300117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8046ff102be462ed4d6ef651fd62a922dc91971a5ed11446c0e8e0f57946c029. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/DEB110300118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc137757375dc993779cdd2b7c4d4b1ce024f479b48f284e128d94162823316a1. 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/DEB110300119.
Mass in A Major, Op. 126: IV. Sanctus & Benedictus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a3b97ff8b3ec059894af46043bb48686167a3981653311b9d0f1f1449fc63e. 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/DEB110300120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d39533fe85483d52ca1a5382039cb59d19d7752cdb8d795fadcc483c874119b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEB110300121.
Beethoven: Messe in C-Dur, Op. 86 (Bearbeitung für Soli, Chor und Klavierquintett von Markus Gotthardt) [Live]
Freiburger Orgelbuch: Europäische Orgelmusik