José Plácido Domingo Embil (born 21 January 1941)Encyclopædia Britannica, Encyclopedia of World Biography, Thomson Gale, 2006, The Concise Grove Dictionary of Music, Oxford University Press, 1994, War
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 0x8df83aaa92236f7524cb0af4fefb3cc0a6ace429429963a0cc04e004161f8284. Chain 2 (Bitcoin): anchored in block 954689 (2026-06-21T10:35:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e1ad69e8-4c5e-42a6-ab5e-7faaaaa908cd.json and https://artists.proofprofile.net/proofs/artist/e1ad69e8-4c5e-42a6-ab5e-7faaaaa908cd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Strauss II, J: Die Fledermaus: Ouvertüre
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 0x5758a23bed3ad9d097e82d935a51e1976785806805dcf3d1edcec1f17cc49aa8. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC8600725.
Strauss, Johann II: Die Fledermaus, Act 1: "Täubchen, das entflattert ist" (Alfred, Adele, Rosalinde)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e718d95bd25c6da211ea91fd4532762d66393ec6b993ef4b786cc301ed136ef. 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/GBAYC8600727.
Strauss, Johann II: Die Fledermaus, Act 1: "Ach, ich darf nicht hin zu dir! (Adele, Rosalinde, Alfred)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e283bcf118067cad477af468f90d8ec5175488c96de186264c69ff505f8756d. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBAYC8600728.
Strauss, Johann II: Die Fledermaus, Act 1: "Nein, mit solchen Advokaten" (Eisenstein, Rosalinde, Blind, Adele, Falke)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e5c34a9afd6fc7263d5f4e95aab0ba8ce9188c313c70fa152b5c998208371d0. 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/GBAYC8600729.
Strauss, Johann II: Die Fledermaus, Act 1: "Komm mit mir zum Souper" (Falke, Eisenstein, Rosalinde, Adele)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c5f5ddc5141bfae66b54bfc43b45c289c8e57a357818a59ebf6e9b79b4e19b5. 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/GBAYC8600730.
Strauss, Johann II: Die Fledermaus, Act 1: "So muss allein ich bleiben" (Rosalinde, Eisenstein, Adele, Alfred)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd008d6e50f5c0d085bdcc5c6ad7e875fbbee9917ef5a592068d9fd84c66301be. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/GBAYC8600731.
Strauss, Johann II: Die Fledermaus, Act 1: "Trinke, Liebchen, trinke schnell" - "Mein Herr, was dächten Sie von mir" (Alfred, Rosalinde, Frank)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffbd3073158abf6c80bd8b5b89b1491a41a4f8b2667591e07bd872748db1a4d0. 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/GBAYC8600732.
Strauss, Johann II: Die Fledermaus, Act 2: "Ein Souper heut uns winkt" (Chor, Adele, Ida, Orlofsky, Falke, Eisenstein)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d4d6303a336e8f691b980185bd3350ea49ab08ad0b38adb053f66293101f7d4. 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/GBAYC8600734.
Strauss, Johann II: Die Fledermaus, Act 2: "Ich lade gern mir Gäste ein" (Orlofsky, Adele, Ida, Falke, Eisenstein)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa96afec3fd0b343c64e8fee81b5920d13baeb02314c4869fcbe070350259901. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/GBAYC8600735.
Strauss, Johann II: Die Fledermaus, Act 2: "Ach, meine Herr'n und Damen" (Orlofsky, Falke, Adele, Eisenstein, Ida, Chor, Ivan, Frank, Rosalinde)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9850ff4ffc9bb4c6648a6f8f20a9a426bcc4d755374d7b55f2ec590916d2ec1. 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/GBAYC8600736.
Strauss, Johann II: Die Fledermaus, Act 2: Finale. "Im Feuerstrom der Reben" (Orlofsky, Adele, Eisenstein, Chor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b26b0cc9f111d5a51bf089045c0bde1c50c536ccf3331ee4859139d62392e4. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/GBAYC8600744.