Audun Iversen is a Norwegian baritone. He began singing at the age of twenty-two. He won the Queen Sonja International Music Competition in 2007 and made the final of the Hans Gabor Belvedere Singing
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 0x5f7bc7ee488f17f3869680dbaeb0acfd7daf7a1369ee520bd5e3d90fa180e3c6. Chain 2 (Bitcoin): anchored in block 954553 (2026-06-20T11:51:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ad219766-321a-4da8-a3e9-e238d3fce5ba.json and https://artists.proofprofile.net/proofs/artist/ad219766-321a-4da8-a3e9-e238d3fce5ba.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Werther / Act 1: "Elle m'aime...elle pense à moi" - Quelle prière de reconnaissance et d'amour"
Orchestra of the Royal Opera House, Covent Garden
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 0x45f5fb0786c12d040f72461a247df370d99d461fc7c06e67bb07e9fd8a382df4. 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/DEN961130308.
4 Psalms, Op. 74: No. 4, I Himmelen (In Heaven above)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1925079fa781b68aa5ce2e39400282207da98e77288453398456e3809354ec5c. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/SEAEQ0761100.
4 Psalms, Op. 74: No. 1, Hvad est du dog skjon (How Fair Is Thy Face)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc4ca90bba30503dd1213440511dbcbe7a54adede98e6308ef498239cfe2a59e. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/SEAEQ0761130.
Wozzeck, Op. 7, Act I: Langsam, Wozzeck, langsam!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e51f193ba7c6dc567e100c774aa69a5836e51db99c3cecf0d84b2fc500807b3. 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/DEU921897401.
Wozzeck, Op. 7, Act I: Du, der Platz ist verflucht!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0cc787ff11c9bb8e39923df86679dc9ef2490f43d12158d5eca12a671d1e201. 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/DEU921897402.
Werther / Act 2: "Trois mois! Voici trois mois que nous sommes unis!"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04155f2794fab6f43618cee324e03b2ed2fadfe22cdfad9f1acb5ad76501d2cc. 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/DEN961130315.
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
Werther / Act 3: "Werther est de retour"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd71a9dbf7453f20180cc6809d886974ea2a646f38aeed6a95042361b418de9a4. 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/DEN961130336.
Landkjenning (Land-Sighting), Op. 31: Landkjending [Land-Sighting], Op. 31
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46d8a7f403727426d3534de2fc8b3bc469bcc6bbb62db1d7cc2de912f94b8fde. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEAEQ0761070.
4 Psalms, Op. 74: No. 3, Jesus Kristus er opfaren (Jesus Christ Our Lord Is Risen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x917f7e1399800d5c81dbed3117f4fdaf91051529890c82f614369bf92668d0d9. 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/SEAEQ0761110.
4 Psalms, Op. 74: No. 2, Guds Son har gjort mig fri (God's Son hath Set me Free)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f1c8f5b0021c8dbc3448d769c6e63ac5fb89f6cbf591a2f40007ba958daadee. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/SEAEQ0761120.
Wozzeck, Op. 7, Act I: Tschin Bum, Tschin, Bum! Hörst Bub?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf05e163ad5f082bcae6ef1e68c74fd61e962d079c5755830c55db2a81999b69a. 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/DEU921897403.
Wozzeck, Op. 7, Act I: Studierstube des Doktors - Was erleb'ich Wozzeck?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b15c004b48f8f52500b472550369120d6690af27856b42f7a6d05aace632b28. 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/DEU921897404.
Wozzeck, Op. 7, Act II: Wohin so eilig, geehrtester, Herr Sargnagel?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x138e02dc0dc1a39ec391cf483614b498f957d6a0fd0425887c231e6b2b80901d. 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/DEU921897407.
Wozzeck, Op. 7, Act II: Guten tag, Franz
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b837b077340446c96319ba7611997b6f56dbf022b7468fdd53e5b0a9f745f2a. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU921897408.
Wozzeck, Op. 7, Act II: Wirtshausgarten - Ich hab' ein Hemdlein an
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa335fe38699b35b729b913b76f7cb562df4c54dbbb598e82ff9d77e9238d3d90. 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/DEU921897409.