Pierre Bruno Hugo Fontana, otherwise known as Hugo del Carril (30 November 1912 – 13 August 1989), was an Argentine film actor, film director and tango singer of the Golden Age of Argentine cinema. E
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 0xbc7eacb6a9e5b7081641954221df96674a728ed96be7861bf16ccb6e10f23e45. 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/ad7e1521-b1ff-49b8-a15b-182a91e55644.json and https://artists.proofprofile.net/proofs/artist/ad7e1521-b1ff-49b8-a15b-182a91e55644.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Antología Noble Del Tango: Sus Grandes Intérpretes Y Compositores
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 0x46f28d3c1c6ceefab86ccd6b474cde36291dfbe16a17790dc453e3ab69e116b2. 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/USR010612459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dcb2d6d367248e201cdd3e4005712bd83a20472f6c9da3e4b3af84d1f90e980. 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/USR010612445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa61bb8376113576354d26a0ea242f91a3302dcc25919500b63fb23c6af304131. 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/USR010612475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf27ee07edc89ee9225ca97b3a3f2f7c4bf9451070d6c82d7c81eacdbcb051b98. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USR010612446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dcaf3f246deb68802a4f7acea5581381c4208842324c1681c928783183180fe. 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/USR010612476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979339d808804a17ecded51117df7e90c5f616a058a01ba718784bec9aa9ac5f. 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/USR010612447.
Alberto Arenas Con La Orquesta De Francisco Canaro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x297d133d960c93ac3c47429898a2b2718f247e2a21823a2c9e2f2513ce842454. 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/USR010612462.
Pregonera - Digitally Remastered Original
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x476c7bf9372db79895cb429fed537871933494502054d05b2cd62e628b403c70. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USR010612492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa5eab28c9e5836a571b6af6f5bbdd5c6955402470ab9a92b21fba89c206d2d5. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USR010612451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe41b2b6057c1ec3d7ab2b4f71138544972a1dfaf9f84272ab1da482dbea6b41a. 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/USR010612452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0df94eddabefdebb9d9bef6e18b732c24c750fdb8cf4abb0ef5fdf814e40fd8. 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/USR010612467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76587504ac8fa40c6e1176fbde52dfe02a62b069736b5c52fc664e2854733e89. 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/USR010612483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe51dd77f0e1e55af655be4d72e98fb445d134760ae32ee62e14da111efc17cc9. 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/USR010612457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00105d25eeb4a6419bcac016cf8597b42f9913127ed2095bcb671dbe60647bed. 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/USR010612458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e544aad1dcf74e4aa145b0348f1e779722c91b90a809c4e323cd6161b84dbae. 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/NLHR52116374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84975f255a50943c25973b8e7dde171723d159b7ed61af8fe070ff2c434b5073. 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/ES6601600600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x751cf6bb450c09ad0cddac812fd6be816e9709306dcfdac44b57c0e26158e756. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES6601600618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5094aad73e343cdb23213f388480db9be6d00d2330443c26a3266e03e808545. 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/ES6601600619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe305688963e48cc7cbb87183760e9c1f9535c638dc4e3514271ded15fe0bba1. 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/ES6601600620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x321603e29cd802f56793b841b6505e46ff5ee54445eda778d437e8d1df786109. 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/ES6601600605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd737299f4cf3679eda58a4a5415e1ec562c8a1fa743872748f5f9cefad8555e. 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/ESA011310320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa46e9d05959907219b64be970c6c28cfd338501c94a40785ba06b12a046fa2. 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/ES6601600607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1eeae83194efafa5d3bd98f4a53c6181d4e3e7da97f97e2acd76d2614e35275. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES6601600608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd091f6c3aec40bcd2fa1b028be0a891361a01a52a70c42a79f0bbd11f9388d. 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/ES6601600611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01210029a069f2e3198ed3ab330ea177f57fede38e2d23e2be806d1defa3c96c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ES6601600614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb4736729516962a00320ed2dadcb1043738e794c180431c2b5d8324ece6299d. 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/USJ3V1340804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd18ca7528ba942b55c72e415229e4cacdcf81edda633e97d6dca2d0e1ee4162d. 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/USJ3V1340806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b1f2e37a326110ac9a5fe0790ddcfd60838a87eb3e90be746556e4672d160e. 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/USJ3V1340807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c2a9208fa4f9483665e57c020da93baf714ef0b7af5b01c45c6954c2a2cd07e. 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/USJ3V1340811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20d2d2c7a768120241acb9f18e5c56cc3776b7512c34857c9029742e0a35725a. 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/USJ3V1340818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd737299f4cf3679eda58a4a5415e1ec562c8a1fa743872748f5f9cefad8555e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-22T01:17:53Z), 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/ESA011310320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0245499da80d87853d74403e37acc7f24a9ef70127b04fa17cc04d51c818bea0. 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/ESA011310346.
The Roots of Tango - Por tus Ojos Negros
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac4db6c77aa6c2fa12e0404aad94b49df63b206bf7d66a08140967300bc8f81b. 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/ARF220500196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b5641ccd331a5eacd5f10d830fda6a52239aee56d1c343b955cb6c2f7299a98. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ARF220500198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd16f06a0c7380738b5f868f8da658b972f365a02106779a84feda2d3bfa5ee5. 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/ARF220500201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c1e64fdcf701d457337aa2dfc0894db461f94f16d2457620b0ec5075cd6c507. 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/ARG991005204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf918d403f0d50bb9498e571a6a4dcf3c02dedce0c9045bce7329f63bcf463ccc. 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/ARG991005205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a1ff1dc9387c9d3fcd69e3370e5f93468ff1fd14a973dbbe27584b3e21651c. 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/ARG991005206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1da0da95329c001a523bd1b1d0293ee4e1d38c210407ed3f63ee4d54afcaddf. 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/ARG991005208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9daacca3d55ba8a7f9cbb94102bf2f75dff0cf8c4bcc0fbd73749eb98548a933. 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/ARG991005214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a58810a3e4d40c734c8724c9c51acec538f58847562ea2a4ee31c0de18f3e66. 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/ARG991005216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1531e2367214076d5aba36027c98c19a0e3fa9691b224928b35e35d6f0131ea5. 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/ARG991005217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaf76d7ee6eccbd2b51e598645df8718cd8d736aeed6ee85f71f27b5362a50e8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ARG991005218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceeb480214a441ef74e87ffbdf7e75189b92055f75e0366aa7312b9eced9bb05. 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/ARG991005219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x292ce5ffe1b0203eab6cc529d60c7ed76687fdded192ea3936c67e9b3d0eec51. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARF030200416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5464ce64f56b2e47495031f3bee9f3b91d43c030f34e084c69c73414dcc78ab. 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/ARF039300189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e95a03614d1d9f144d2127ded1c3097ce315947f6796aae0f261d1459e595ea. 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/ARF039300186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7155f5dcc6bfd92945a09210bf3a53e96667d37ed7070f2bcc5c901f35d654ff. 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/ARF039300182.
Yo Soy Aquel Muchacho y Otros Éxitos de Hugo del Carril
Vintage Tango No. 51 - EP: Sus Famosos Tangos
Hugo Del Carril con Coro y Orquesta de la A.P.O.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3aa43a2415e4b7d0b6c2d3fe7a50445437a4e2d3a10f724d9c97432d19d374f. 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/ARF039500461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b10a881e2f07d3905f13a8f00deccd3b16ae0101ef46b62eac6c50bc0a85567. 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/QMBZ91346495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5faa566874eeb6f9a721b4cc9f1f1468ab0d0c760ecfec30ccc0e6c64d50068b. 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/QMBZ91346496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e51d1c2a858efe05e755695becea700348d2fc87c81f2612665ced9ee933799. 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/QMBZ91346498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe40a01af1102ec14c0543e6a9af97ceab8911386a51b0e59429493f1d04f84f0. 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/QMBZ91346499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16b84a527e85d604062e06448bf53473f92b846e5a093947e9906fdeb25b7726. 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/QMBZ91346500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fcaa71141edc750a7029e2122e4bfe24c2cf38011f3ea43bf5a9e03645febef. 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/QMBZ91346501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70e13245a8726327bb4eb89cd34e2f4d2691c7df5c17a5ab2542b149c0ff6f83. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QMBZ91346502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x122f5255f6b4daf62ae2bdc3402361f0fec4f008210a6d58a94189d617b1da67. 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/FR6V80306802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03dbd822c0b06603dd2c4dc1dbc2964f38019abcaa0b385662b3aab22f42dde. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR6V80306805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9257e35fea00411a649919e8eed339f4a4b258cc3b4460a7001606e384cfb9d. 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/FR6V80306806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdc82d46c775c6cac1d0c948e91f589d834306f51c98804b1231612218fa8636. 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/FR6V80306821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5233841d55a31945faec323ba64ddd48c569b4a726d007485a169fa2bdc77fe. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ARF221100000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b63ab755bd6cfa3ee5e76943908929cca0be2886bfe23b913e759d8d4e9f7ad. 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/ARF220500250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6898fb7a9a6410867fd7b9d04564a83ccffe1ba46b53e9fbcac60407fa065e2b. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ARF220500226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b5641ccd331a5eacd5f10d830fda6a52239aee56d1c343b955cb6c2f7299a98. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-21T08:44:45Z), 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/ARF220500198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8a5b69464b5ecf1ba646ba4add3d3d5b8a63d93091a7b88f23d91a08d52f20b. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ARF220602773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ce04cb1597deaa801be2b3c99e3b786d563b79369aa636d9f749f5e2bba7eb. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/ARF220500474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5432553b4ca7341ea457fb7be8ff8c4d071982f8433f6eda09f13a04aa95f75. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/ARF220500334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb554310745185fa53ade8ee8e07c4607fb58c25aa8a7d6509da02667138a4408. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-21T09:02:10Z), 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/ARF221100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc7cfe839c8dcf243901c30911ba4fffe369bcc2a482116cd03a70cd974f05a. 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/ARF220500254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ccdd46d41227f35e2591b16c39aa85a0d7ee5a3394abe4a79d764e91ab09b5a. 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/ARF220500177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45f0a81db756d310bfd4cb3ac768925137551d9fa5e6561d99701421b9167ba2. 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/ARF220500182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6395596db350f77f154f5e9f5aca0c8822284d8f9488dcd41cfde7fb71201e96. 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/ARF221100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e3937009988682df7e876bf72628757778dbed7790aee15f8ce0acf351c96d1. 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/ARA821501493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fbcf45e20684665565834d06d269c88c01a9fb1449dad385401d4fdcd416ffa. 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/ARA821501494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x526cf3a347661ceb9e30104538294624c1de98c5bb37773384bf0b76edc4c57d. 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/ARA821501497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a18b62f176f9b939f343eec1592931d3cdfba9b506b1eb220ebe03de4201f9. 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/ARA821501500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca227f129936146d75028006b1978821b90f98d7e64eef44e2f20187a7533f1. 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/ARA821501501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f32882da0be0b5cf22d2f9067f463c50a69eba4d83f893c02ee3dbcb355b6f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ARA821501502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12df9006893b675b0d5f3773c708418c4bfaa6c2c3269de2684b2a9f02250157. 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/ARA821501505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x174ad56e2971251bab58fa67238eb8cb1eecd06215f801baef8ea44e960b23dc. 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/ARA821501506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4933e5e13c81bd4d915b522a333715b23d1804ce5ee1eb888833f0a1dfc8092. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/ARA821501507.
Tango Argentino Patrimonio de la Humanidad: Cantantes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd16f06a0c7380738b5f868f8da658b972f365a02106779a84feda2d3bfa5ee5. 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/ARF220500201.
Vintage Argentine Tangos (1928 - 1954), Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf244891acc56d3e89ec7ec73a35e6a798abc9521edbf8ef76ffa6689b8f3cb65. 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/CA5KR1575278.
Adios pampa mia (Farewell to My Pampa) [1945]
The best of Argentine Tango Vol. 3 / 78 rpm recordings 1927 - 1957
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55f77cec92edb1757e42f955e1aee4fb16b6a1493736d00f18d52925a228e6e1. 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/GRHR10738812.