Francisco Juan Lomuto (November 24, 1893 – December 23, 1950) was an Argentine Tango pianist, leader and composer who occasionally went by the pseudonym: "Pancho Laguna". Lomuto was born in the Parqu
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 0x1e49527c8269d2a2f1e49f5828bb5b70e6e434de1d92957e52888e2ff05520e4. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/de57e55e-f753-4545-acd2-88bb7940f32d.json and https://artists.proofprofile.net/proofs/artist/de57e55e-f753-4545-acd2-88bb7940f32d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x74ddce07b14ac49ad29e1842173666be4ed57952978643a027b70f91d63c7452. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:44:10Z), 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/DEZZ52171326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e4f0d791d0d6b74ee2408686bbe4d082d5032fca70f65366828840a21b0c4e3. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/DEZZ52171330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba57c22760111301733cb54b7a43a8b51ed11e2073b703a265ac15331b2a388. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEZZ52171332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fded685d4143b88c80c1ef3a473a686964a85e8316781c44a968e6652097014. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T07:58:16Z), 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/DEZZ52171333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4252a3b76bc7e5af7e58ad925c956f1e35da0f2b945f2eb947512bc1249a9f8. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/DEZZ52171334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x038e18ef8f7d3fb1ac85ff7d9113d4ce2deadf72558b44dfb6fc14adc46dddd6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEZZ52171341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7507eef3bf867c4ee3e989a0ad55a6a997193705fa05a9dd64fc91a2f35e8a1a. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:08:54Z), 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/ARF030400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e578f032e0b27c50fa03393f5dc96c62c5f44de75608599c2c5dd580f29b283. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ARF034500055.
Tango Classics 001: Rinconada de mis tiempos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e331620f5f7b97871249b9843074c4f49cff863f1f67ecc6c8c1a69f5335e39. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/DEBL61232336.
Best Hits Collection of Francisco Lomuto
Tango Classics 375: Caricias (Historical Recordings)
Tango Classics 392: Solamente Ella (Historical Recordings)
Tango Classics 387: Galleguita (Historical Recordings)
Tango Classics 374: Despues Arreglamos (Historical Recordings)
Tango Classics 382: Tormenta (Historical Recordings)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec8254375867e432d6f1ed5ab0c074f3c01793c1ed9b639bc07d3beccf41e2e. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/DEN721406396.
Tango Classics 368: Puerto Nuevo (Historical Recordings)
Tango Classics 391: Ausencia Gris (Historical Recordings)
Tango Classics 362: Sueño de Poeta (Historical Recordings)
Tango Classics 364: Amargor (Historical Recordings)
Tango Classics 386: Isabelita (Historical Recordings)
Tango Classics 366: Papanata (Historical Recordings)
Tango Classics 370: Perfume Gaucho (Historical Recordings)
Tango Classics 361: Bigotito (Historical Recordings)
Tango Classics 369: Azul y Blanca (Historical Recordings)
Tango Classics 360: Zorro Gris (Historical Recordings)
Tango Classics 394: Rendido (Historical Recordings)
Tango Classics 383: Tango Amigo (Historical Recordings)
Tango Classics 381: Por la Vuelta (Historical Recordings)
Tango Classics 396: Muñequita (Historical Recordings)
Tango Classics 390: Mi Reflexion (Historical Recordings)
Tango Classics 395: Diez Años Pasan (Historical Recordings)
Tango Classics 379: Desaliento (Historical Recordings)
Tango Classics 378: El 13 (Historical Recordings)
Tango Classics 372: Volvio una Noche (Historical Recordings)
Tango Classics 385: Llanto (Historical Recordings)
Tango Classics 365: Rencor (Historical Recordings)
Tango Classics 363: San Telmo (Historical Recordings)
Tango Classics 389: Rosas Negras (Historical Recordings)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96302efcc18334a812e4ef3df017b1f67ca8e164ac8962d82ca00c724242dd6. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:23:57Z), 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/DEN721406455.
Tango Classics 373: Luna de Arrabal (Historical Recordings)
Tango Classics 367: Churrasca (Historical Recordings)
Tango Classics 388: La Gayola (Historical Recordings)
Tango Classics 397: Con Mi Perro (Historical Recordings)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85277dad7009fbe8833dd85c002dca01e8220e3a3c2fd1ad3f6fea8cf39ffd97. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:40:18Z), 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/DEN721406380.
Tango Classics 377: Condena (Historical Recordings)
Tango Classics 376: Nostalgias (Historical Recordings)
Tango Classics 384: Como las Aves (Historical Recordings)
Tango Classics 380: Golgota (Historical Recordings)
Tango Classics 393: Serenata (Historical Recordings)
Tango Classics 371: Muñeca Querida (Historical Recordings)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c4e147a963df99f76a2920e4ad3411fce310a91a58a374b5aa1f83836c4645. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/ARA821511910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x656e3dc973bca1fab2dea3edada9b563fd5f71cc70d3b34cb0ee865b2fd43884. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/ARA821511923.
Los Tangos de Pancho Laguna (Remastered)
Infierno de Tango - El Fuego Inolvidable de Francisco Lomuto
Romantic Tango Nights - Vintage Argentine Classics by Francisco Lomuto