Samuel Mariño (born 26 November 1993) is a Venezuelan-born male soprano opera singer and recitalist. Early life Samuel Mariño was born in Caracas, Venezuela, into a family of university professor par
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 0xd681e4186194ed7515e30103bf68530d8bb19f7e6a46d621f1dcc8cc4d526788. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bb78bba5-8f62-47eb-afdc-98bd1ce09b79.json and https://artists.proofprofile.net/proofs/artist/bb78bba5-8f62-47eb-afdc-98bd1ce09b79.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Les 3 Contre-ténors: Le concours de virtuosité des castrats
Solomon, HWV 67: Arrival of the Queen of Sheba
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 0xa064b1c9690758d995badbcb9fd827cee3b442abb02ca53e5ac9c431df5b92ce. 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/FR9W12124362.
Berenice, Regina d’Egitto, HWV 38, Act I Scene 11: Duetto. Se il mio amor fu il tuo delitto (Berenice, Demetrio)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7452b9eb8dfeeb10e1aa2b8dca8d8def92926bf79345b4791e6a63ce6ab89c28. 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/FR9W12124364.
L'Incoronazione di Poppea, SV 308, Act III Scene 8: Pur ti miro (Poppea, Nerone)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b0b176ea9e988252f551700ecafeefd39d0cb9076b39229f863ddbc29f27fa2. 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/FR9W12124370.
Pergolèse & Vivaldi: Stabat Mater pour deux castrats
Stabat mater, P. 77: I. Stabat Mater dolorosa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa39b0fea1474e1d4cf006623e3bc575e2c178e118b9b2dc7bf6e1bd9ed55ee1a. 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/FR9W12037367.
Stabat mater, P. 77: III. O quam tristis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0db9c2a4977c0d9b12684fefb47c7f1a2e03f2721764b2809dd6ee4711b06a9. 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/FR9W12037369.
Stabat mater, P. 77: VII. Eia, mater, fons amoris
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c14ca9e6c614d6158e0fbf251575490fdf98be031355c151b0219f6583ffb64. 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/FR9W12037373.
Stabat mater, P. 77: X. Fac, ut portem Christi mortem
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f102ae0e11ae65b1794a4e0ad628e7180bb90a9e2a08e652383072b72b63c2. 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/FR9W12037376.
In furore iustissimae irae, RV 626: I. Aria. In furore iustissimae irae (Allegro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb85e19dd76d2bbf051e242823956491de38cc1c4eba3b85555a0d40f43c6ba19. 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/FR9W12037360.
Concerto for Violin, Oboe and Organ in C major, RV 554a: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f09597d6e82ae4e2370d24c587eb4bd9ec06df85841d602bcc12184cdb4d06. 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/FR9W12037364.
Le nozze di Figaro, K. 492 / Act 2: Voi che sapete
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580c9d6156705987af9c85cb13831b386389b9aa2e146c6b334ec611947e0029. 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/GBBBC2200207.
Le feste d'Apollo / Orfeo: Che farò senza Euridice?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5d358817f8a0ea0b317692f78052c0b076be8557b5b2f324c4cd4f9c16a20d1. 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/GBBBC2200208.
Il re pastore, K. 208 / Act 1: Aer tranquillo e di sereni
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x532a5a88e8bc7f3dc656a8568eac5a727b4f17f15e28cc9cc553e3466a602bd2. 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/GBBBC2200209.
Il re pastore, K. 208 / Act 2: L'amerò, sarò costante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560a6c57c0ab7ce91647267f0574810c3fcf0aae07def4ce235e101007e99c25. 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/GBBBC2200210.
Gli Orazi e i Curiazi / Act 3: Resta in pace, idolo mio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf80d43d255b7aad5ed80c6ca45b6596e323406a5401ff95b52a2e3d77993aed9. 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/GBBBC2200211.
La clemenza di Tito, K. 621 / Act 2: Deh per questo istante solo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19b28090969291543f3e66fe88be077370a34631b69704c6f93feb590714d881. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBBBC2200212.
L'Amant anonyme: Ouverture: I. Allegro presto
Joseph Boulogne Chevalier de Saint-Georges
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4264ffb1f18befd86e132e3c499bce7ee303e47b14306818534a063764821ea2. 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/GBBBC2200213.
L'Amant anonyme / Act 1: Son amour, sa constance extrême
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b3e634a5ec7f2abdbc7ad2cb11968e366b42dfa4049944421b84f5bf408833. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/GBBBC2200216.
L'Amant anonyme / Act 2: Enfin une foule importune… Amour deviant moi propice
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2214852f47042ab7beb88250e71b04a1ba23241a6b3ca545800655065cc84fd8. 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/GBBBC2200217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d3de0ae33c285fec933ef1c8b3b58d830bfd9d84017093f918a920e56e0bc6b. 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/GBBBC2200219.
Atalanta, HWV 35 (Excerpts): Non sarà poco
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda18c8d26dd51152ffe883a72ed5ba5e38983b6d41e86c03b83981324fd208a6. 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/DEB952099803.
Atalanta, HWV 35 (Excerpts): M'allontano sdegnose pupille
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb08424ca2e2d605af14d7033601f75b55eec7622535959dc4f32049c734d7710. 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/DEB952099804.
Yánez: Viajera del río (Arr. Assad for Voice and Guitar)
Viajera del río (Arr. Assad for Voice and Guitar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3be950f5f48b6c2b3eb7a1ba4eef31a6000f33da5a94772fa1800244c561acc. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBBBC2301514.
Mozart: Le nozze di Figaro, K. 492 / Act 2: Voi che sapete
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580c9d6156705987af9c85cb13831b386389b9aa2e146c6b334ec611947e0029. 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/GBBBC2200207.
Saint-Georges: L'Amant anonyme / Act 1: Son amour, sa constance extrême
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b3e634a5ec7f2abdbc7ad2cb11968e366b42dfa4049944421b84f5bf408833. 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/GBBBC2200216.
Mozart: La clemenza di Tito, K. 621 / Act 2: Deh per questo istante solo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19b28090969291543f3e66fe88be077370a34631b69704c6f93feb590714d881. 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/GBBBC2200212.
Gluck: Le feste d'Apollo / Orfeo: Che farò senza Euridice?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5d358817f8a0ea0b317692f78052c0b076be8557b5b2f324c4cd4f9c16a20d1. 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/GBBBC2200208.