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 0x584d518f2f12beae3e67ea7e533eac71c15ef93668d20328a19a86652a786944. Chain 2 (Bitcoin): anchored in block 954513 (2026-06-20T06:31:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a07b4a92-7db7-4173-a322-ab6b667e60da.json and https://artists.proofprofile.net/proofs/artist/a07b4a92-7db7-4173-a322-ab6b667e60da.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Wagner: Der Ring des Nibelungen, WWV 86 (Live)
Der Mond, Act I: "Vor Zeiten gab es ein Land" (Erzähler)
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 0x0c8f2572e2bb878c17edf010fac839d24939e8366e3146b81e0afb67faf5c468. 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/DEF161534801.
Orff: Der Mond: "Verzeiten gab es ein Land" (Erzähler)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe997ef9c25b532a85a9ab10a245d1306db3abfb4e549c88fc88b24934acc9037. 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/GBAYC5700076.
Orff: Der Mond: "So brachte Petrus die Toten zur Ruh" (Erzähler)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6701371223c6b2f11d529a75a3288cc61dfc3a2217e78e6be8c7a1d2d202ae2. 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/GBAYC5700100.
Orff: Der Mond: "Ach, da hängt ja der Mond!" (Kleines Kind, Chor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34049d8c9d3b8f564a0e0a64b5d5666e436d4a7d86dc8445c75879a09a4bc115. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC5700101.
Orff: Die Kluge: "Oh hätt' ich meiner Tochter nur geglaubt!" (Bauer)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bcfd1ceda6f289be602ce9f7d4099a530e97d42dd39a6f96fb698ac2235d9a9. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/GBAYC5600170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6701371223c6b2f11d529a75a3288cc61dfc3a2217e78e6be8c7a1d2d202ae2. 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/GBAYC5700100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34049d8c9d3b8f564a0e0a64b5d5666e436d4a7d86dc8445c75879a09a4bc115. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/GBAYC5700101.
Orff: Carmina Burana; Die Kluge (Highlights)
Symphony No. 35 in D Major, K. 385, "Haffner": II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3306da338adf4258c959e927cec236b7deda225209592372b6b94900b28b4cd4. 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/DEAD60702102.
Symphony No. 35 in D Major, K. 385, "Haffner": III. Menuetto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf237c523f1b6ee1b72877ed717a46c1de66bbefb4d7b91424cb7279353088ec. 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/DEAD60702103.
Symphony No. 35 in D Major, K. 385, "Haffner": IV. Presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb60799ad036ff4f1d26a97faa805220213b14738af6d7564c3657ce9cb17c447. 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/DEAD60702104.
Lebendige Vergangenheit - Günther Treptow
Selig sind, die Verfolgung leiden (Der Evangelimann)
Orchester Des Deutschen Opernhauses Berlin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf74f360b2c9218fb74ac7a228cf92514c6b8d973aa02e24276f1f18eb2790478. 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/ATP130155008.
Wagner: Der Ring des Nibelungen, WWV 86 (Remastered 2021) [Live]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc80a022b6348d7e769a5c731f19585d1d01f8926fb35c1adcd0dbf487199f37f. 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/DEF055930501.
Der Freischütz / Act 1: "Oh diese Sonne"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06fe96f2a1a6255df6fafbb4ce49ffc0ad09ed610f57c9944e9e6921b41c42aa. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/DEF055930519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x018f951b09a7ffc724836bd053d55e0add48ad5e3e42a21f361eb52c9bf15ed3. 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/DEF055930516.
Der Freischütz / Act 3: "Was gleicht wohl auf Erden dem Jägervergnügen?"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42180ac8e5ff0c292805a3821564793fffb77f39144ea6bb79db97a8c234afce. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/DEF055930513.
Wagner: Highlights from The Ring Cycle - Essential Music from Der Ring des Nibelungen with Ride of the Valkyries, Siegfried's Rhine Journey & More
Brother Grimm's Fairy Tales in Operas: Der Mond
Strauss, R: Der Rosenkavalier, Op. 59, Act I: Einleitung
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6987b5cfc7283e659c29d2f3c4a02ca03a1bb2c2938b6e978d29e5d50d9c0103. 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/GBAYC1701666.
Strauss, R: Der Rosenkavalier, Op. 59, Act I: "Wie du warst! Wie du bist!" (Octavian, Marschallin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ea54d6e7d286082edc0bd01b2200c852d27506f0d761576ca881481f1e3538. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/GBAYC1701667.
Strauss, R: Der Rosenkavalier, Op. 59, Act I: "Lachst du mich aus?" (Octavian, Marschallin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2563e5aede1a2407f05700ea6794f1ab58a93fb670eeddf964a5f91b072c1e50. 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/GBAYC1701668.
Strauss, R: Der Rosenkavalier, Op. 59, Act I: "Der Feldmarschall sitzt im krowatischen Wald" (Octavian, Marschallin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf99dc79e96374926dfdb4ac822d2a50bf29b19685e38da7b18859637c6939f07. 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/GBAYC1701669.
Strauss, R: Der Rosenkavalier, Op. 59, Act I: "Quinquin, es ist ein Besuch" (Marschallin, Major-Domo, Ochs, Octavian)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdb86e868c512e5fc941bb8723123d9e7140cff0c597c845b000e985a17e7a01. 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/GBAYC1701670.
Strauss, R: Der Rosenkavalier, Op. 59, Act I: "Di rigori armato il seno" (Singer)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x862dd73206123c7c4a1b7d2b2a18a1ad84218cf719b3beaf40faa9420755fc6e. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/GBAYC1701677.
Strauss, R: Der Rosenkavalier, Op. 59, Act II: Presentation of the Rose. "Mir ist die Ehre widerfahren" (Octavian, Sophie)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e6e989454d8a7a412d57722ed773a11d4a2113220a0816769ded9c3881b494. 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/GBAYC1701689.
Strauss, R: Der Rosenkavalier, Op. 59, Act II: "Hat einen starken Geruch wie Rosen" (Octavian, Sophie)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d4e32948cd29a13fc53a671e9f9c82b38ae9c572d8bf7126b2772802db47240. 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/GBAYC1701690.
Orff: Carmina burana; Catulli Carmina; Trionfo d'Afrodite
Strauss: Le chevalier à la rose (Mono Version)
Le chevalier à la rose, Op. 59, Act I: "Einleitung"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969ab6c52e64412d84e73482f811c71214069efa71986f12f5e765949df38fd8. 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/FRS181210766.
Le chevalier à la rose, Op. 59, Act I: "Wie du warst! Wie du bist!" (Octavian, Marschallin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd5c5d3d197b06254f140025cdd38d79ed20f583f8769280d356f1551d14773a. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRS181210767.
Requiem in D Minor, K. 626: III. Seq. 6, Lacrimosa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a5e2ea89ddc6a9a28cf4ed8872ccaf7c51a895c4cf1cc5f76f3486b93f6ebd. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/GBAYC8906374.
Carl Orff: Carmina Burama, Catulli Carmina, Trionfo di Afrodite