David Charles Abell (born 1958) is an American conductor of opera, orchestral music and musical theater. Described as "a protean talent" with "impeccable and inspired" skill as a conductor, he is acti
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 0x8a347495a495f89be0f02a939bea73ca28d767cb06ce49642a805ba8a2d62c29. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/488be0f7-64fd-41a8-b477-47a8dd958261.json and https://artists.proofprofile.net/proofs/artist/488be0f7-64fd-41a8-b477-47a8dd958261.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Strauss, Johann II: Die Fledermaus, Act 2: "Mein Herr Marquis" (Adele)
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 0x1ca0d5ab75ec58a38b7c757904c4d859ed31286bd56ff6436683da54bf211d89. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1302280 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x372e0bae5773c63b1bdae88b59c767b6e8f129d3dcbaf9064350d03ace143379. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1302275 — a six-check JSON result.
Lehár: Die lustige Witwe, Act 3: "Lippen schweigen" (Hanna, Count Danilo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025e1823872faef31aa807bf8abf414fa6a0a4c3454b9cee8d6451f7972536a7. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1302279 — a six-check JSON result.
Menken: Arielle, die Meerjungfrau: "Ein Mensch zu sein" (Arielle)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b32a35b265bada05fb4353c4dba336fa506b224b5037770a88fc9c4e3e5ee51. 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/GBAYC1302291 — a six-check JSON result.
Lehár: Giuditta, Act 3: "Meine Lippen sie küssen so heiss" (Annita)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c519503c868859f632967095fe36f4706186b156722e96e8db83fc4584634f. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1302278 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb7685275d124d5123ffc91ae896d58a6cc9c580bd3c0c0f2d914e51b46929ba. 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/GBAYC1302285 — a six-check JSON result.
Strauss, Johann II: Die Fledermaus, Act 2: Czárdas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dcb5d54ded3a39b53333a6afe8e06cca1f5e72fe5bd16b0c4205c86c717c7e1. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1302281 — a six-check JSON result.
Loewe: My fair lady: "I could have danced all night" (Eliza Doolittle)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1565d88cc0d527ef16dcafbad5fec6460218a3a0bfcfe9af213f17bbda28af8a. 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/GBAYC1302283 — a six-check JSON result.
Webber: Phantom of the opera, Act 2: "Wishing you were somehow here again" (Christine)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b58505ff153cc5786848001d65ff6c64394d307081391d7daed8d1db7850b3b. 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/GBAYC1302287 — a six-check JSON result.
The Little Prince: The Cranes Are Flying
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e12ca66d27d5837501db4d6a9c6ca968c2c75611f6d4d2b69eb03cf7433a42e. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/GBCLS0400040 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe85e5ccde7ca51dc86d8258315093c0bbbf9fed4c526ae0269052c2704ac000f. 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/GBCLS0400046 — a six-check JSON result.
Kálman: Grafin Mariza, Act 1: "Höre ich Zigeunergeigen" (Countess Mariza)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dab7e053ca6803d895b69b09021e681d1895f1427bf0a6f4a67555ffbc51707. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/GBAYC1302276 — a six-check JSON result.
Bernstein: West Side Story, Act 2: "I Feel Pretty"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c07a29dcde54a7177e58865888647da21f5d49d26573ddf63921d249af40c36. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/GBAYC1302288 — a six-check JSON result.
Fain: Alice in wonderland: "All in the golden afternoon" (Alice)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68800193911c9736d03a3946340cff5b2cc2ca9fca460c050806b521c2f520f9. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/GBAYC1302290 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c47cb33c76d395b9940366950d7fecc1fe63271b5b818a5fe536ebf097af5e. 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/GBCLS0400041 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b3a1d8cf8967abd93199e810ebef1d054f52286f9eec9a1d0dc7aea8a71282. 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/GBCLS0400042 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e2256c14e48a296c7d41281718b9cc699cd0ad4071053d01b141dda9cea30e4. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/GBCLS0400048 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f6d980e3d64d490fca9452ce875d274ffeb3ccac9393413f8a9682d35807cd. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/GBCLS0400059 — a six-check JSON result.
Leonard / Arlen:The Wizard of Oz: Over the Rainbow (Dorothy Gale)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ccfd88adea1711c0e6a8565b67546e84ce0554989df1c5fcf3c8ea0af683fa. 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/GBAYC1302289 — a six-check JSON result.
Churchill: Snow White and the Seven Dwarfs: "Someday my prince will come" (Snow white)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab145a670d8e64f2d69ebaadd8878285f4b52a6eab27ad3382759f99f39afcd. 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/GBAYC1302292 — a six-check JSON result.