Dwayne Croft is an American baritone who has sung in more than 500 performances in 38 roles at the Metropolitan Opera. He won the Richard Tucker Award in 1996.Richard Tucker Music Foundation He cre
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 0xaabe1aac08bdb664edf72649f052b5089c94d10a269dfbf22008b525695df791. Chain 2 (Bitcoin): anchored in block 953780 (2026-06-15T12:02:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d4b16cbe-4fd4-432a-b2ad-8c9a45df3242.json and https://artists.proofprofile.net/proofs/artist/d4b16cbe-4fd4-432a-b2ad-8c9a45df3242.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Manon Lescaut, Act I: Discendono, vediam!
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 0x478a82894f2b7514f2be2e8446d926f44276163077cad9a4467f6cefe6d6a2ac. 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/GBF079241805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e45ebf63b9cb939d1a3db2ad45d119d578927a5677e1898965905bc1befd3ef. 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/GBF079241806.
Manon Lescaut, Act I: La tua ventura ci rassicura
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5945920952eb66e9ba495c692884ca3262d1a31b1a8d67f79d342ba0147cf3d. 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/GBF079241808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b647f6fb1bf1d04adb818538ce9a11dd6b5dcf43bb3e21480230ba869b82f56. 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/GBF079241811.
Manon Lescaut, Act I: Di sedur la sorellina è il momento
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72bfaf0a36f0ce0429909bd4881712a5504d9332c0571c334b02d8d6ada89163. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/GBF079241812.
Manon Lescaut, Act II: Dispettosetto questo riccio!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x328dda034d5aa863a86901000ffbe72870d49c9d28359bd17a19b31fe3f9fc50. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/GBF079241813.
Manon Lescaut, Act II: Poichè tu vuoi saper?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff5bdbd07210dfda3e9f72a4185f025a14e44d9f350fc15a0de86a5bc4706fe4. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/GBF079241815.
Manon Lescaut, Act II: Che ceffi son costor? – Sulla vetta tu del monte "Madrigal"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c1f97015c3eafe77d679d310c7708042dc364512318a3d2a9a943624000f4d1. 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/GBF079241816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c7fbf23396f14bef443b2e1fd65f040268778411655e45a633b28bdf170aa8. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF079241817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc46a98ea18a481e6fdbcb04769cf45dbf1e7ee7b8c1a334fbdd8e1f40c1ed33. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBF079241822.
Manon Lescaut, Act III: Ansia eterna, crudel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eb6259e570a8405f07ea8bb2a71aa7c3c578d6831d6f2f56402e44b3d8561f9. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/GBF079241824.
Manon Lescaut, Act III: All'armi! All'armi!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa6332b0341e0e2d20d9a09715c846304ef263673ecd4ffe75b805ec2dc75c5c. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/GBF079241826.
Manon Lescaut, Act III: Rosetta! … Eh! Che aria!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf98c39e20e838596f946a8a77ada0d72d9a1869bbdf991d2b5ac9f6213a5a1c. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/GBF079241827.
Das Rheingold, WWV 86A / Dritte Szene: Ihr andern harrt bis Abend hier
Twilight Of The Gods - The Ultimate Wagner Ring Collection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9781494f2f02e375f7bb0e9da7a291b9ea2fdd41a73a7beb94214c721e2f688c. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/DEN961003760.
Das Rheingold, WWV 86A / Vierte Szene: He da! He da! He do! - Rheingold! Rheingold!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef695579a7d873dc267cb853cde9c6d31836f33f07b90273c66db25bc45dd77d. 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/DEN961003790.