thumb|Karnéus in 2020 thumb|Katarina Karnéus as Xerxes in 2009 Katarina Esmé Marie Karnéus (born 26 November 1965) is a Swedish mezzo-soprano opera singer, winner of the BBC Cardiff Singer of the Wor
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 0xa0cc6ae8b061ba3af71a80a22aedaf5d280b3496f409bbb9519f487d721a513a. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f7b24740-74fd-4752-bc88-5b8981a794f6.json and https://artists.proofprofile.net/proofs/artist/f7b24740-74fd-4752-bc88-5b8981a794f6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Wolf: The Complete Songs, Vol. 10 – Goethe Lieder, Pt. 1
Mercadante: I normanni a Parigi (Highlights)
Beethoven, Van L.: Symphony No. 9, "Choral"
Symphony No. 9 in D Minor, Op. 125 "Choral": II. Molto vivace
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 0x807585d25cf1180f9cb736b3d9232029780e9446bf04553ca93126d6dc7007f6. 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/SEAEQ0616020.
Symphony No. 9 in D Minor, Op. 125, "Choral": IV. Finale. Presto - Allegro assai
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e16341a2a7c9bd50c5219d14ccfaea649fcdcb89d1ba79c0d3b18c3f20037fa. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/SEAEQ0616040.
Symphony No. 9 in D Minor, Op. 125 "Choral": I. Allegro ma non troppo, un poco maestoso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb314519138215689bdac1927fa71f5a1052d4cfef86790a95942309ef640da07. 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/SEAEQ0616010.
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
Symphony No. 9 in D Minor, Op. 125 "Choral": III. Adagio molto e cantabile - Andante moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08c3e6c7c905abad767947cfd261489d8a97b461a46dd837def23e2b27c8b3cd. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/SEAEQ0616030.
Donizetti: Rita: "Il est manchot !" (Pepe, Gasparo, Rita)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d18f1f40cb7537d2dafa954b3c33d206b432d1ee43a9adb89784421db418f1b. 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/GBQXY1260242.
Schreker: Romantic Suite, Fünf Gesänge, Prelude to 'Das Spielwerk' & Vorspiel zu einer großen Oper
Debussy: Syrinx, Bilitis, La plus que lente - Ravel: Chansons madécasses & Prokofiev: Flute Sonata
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe526b810e273426ae7c16d196c6214adfee37791eed012d144ae8bfb89111654. 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/GBAYC9902861.
Debussy: Épigraphes antiques, CD 139, L. 131: No. 2, Pour un tombeau sans nom (Arr. Lenski for Flute and Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dcb8cfc88c6f289c1d17346d46bdb2d7e92be39a8fc788636b37dfff97a9edd. 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/GBAYC9902864.
Ravel: 3 Chansons madécasses, M. 78: No. 3, Il est doux de se coucher
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x978772160d41facb71e923a2e052b29281f30aab397de5f9288d84f5611db070. 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/GBAYC9902872.
Prokofiev: Flute Sonata in D Major, Op. 94: I. Moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc2df98fe369c3a81467ee034ceedc1b70a002ee2d4502bae0c56b3ffb05005. 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/GBAYC9902875.
Prokofiev: Flute Sonata in D Major, Op. 94: II. Scherzo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51896308d9def18f6c5114b93ecc0a5302374bf6f58d1e4bce59d059067ddca0. 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/GBAYC9902876.
Prokofiev: Flute Sonata in D Major, Op. 94: III. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bbd3911e79938df6a390519441ec0ad51a75a5313a6841948eea4622f882cdb. 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/GBAYC9902877.
Prokofiev: Flute Sonata in D Major, Op. 94: IV. Allegro con brio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0737903ef5896f82e3e68d66b480dd4242de70ec62933f0af0dc2ae7f8e0200. 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/GBAYC9902878.
Ravel: 3 Chansons madécasses, M. 78: No. 1, Nahandove
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x212ae866ef9172198d5c1e7c62cd69a87bdf6f46313376059df36ec22abc0ced. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/GBAYC9902870.
Lakmé: Viens, Mallika - Sous le dôme épais (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4510e0fbfb1d2f71fc093543d82e192822ce0d64a7a4f0838001cf7e37a381da. 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/SEAEW1412070.