thumb| Alfredo Juan Falú (born October 10, 1948) is an Argentine classical guitarist and composer. He was born in Tucumán in 1948, to a family of Syrian descent. His uncle, Eduardo Falú, was by then
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 0x4e4c8efd6bc3e13ffd41c16e22dd98aa95c6b1974d42232428d28bb4438cb68a. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0e88aae3-7773-49b0-a0a0-ac149e650015.json and https://artists.proofprofile.net/proofs/artist/0e88aae3-7773-49b0-a0a0-ac149e650015.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 0x723b4a5d728ebc95e248f6758ccd7c25967022cdbf142eaff7525849f5fb2e7f. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/ARS282500166.
Diez años (colección guitarras del mundo 2)
Colección Guitarras del Mundo, Nº16: Encuentros y Soledades
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81df6a16b1f7405be3a5ef0cdbfdb3dd61ab9bb1c6d347aa8f397aa04d5b1e4f. 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/ARF391501701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8551279113879604400711e5b507c5fdcc46064b4d5045b0199a26954167d112. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/USA560307305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f333624467857ca51730041ed960d6a9bb385d50685fd24b940d5f02d6fcd9b. 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/ARF051100047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a2c8f7f27bf7a673985827a02e93fc9942233aa9471edcd7f47697103a3a9e4. 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/ARF050500103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa8d932c93e507fa14f05f1e93b0c1c67321675f0b82eb852f1c8be276eaacad. 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/ARF050600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ab75bdb934681cd9aa3ff9113efaa97e876340415db02b1df6c5765784d95e. 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/ARF050600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb518e4d181f5013b784a2162b62aa55a2bfd8e186d6b9b2f97680d1293823763. 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/ARF050300517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3275c163261f190a13324d7442812bc6a97e9e214bc589d0da0c7d2f9acf7c6. 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/ARF050401253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9327287c354958fe9a16e90261693acc212624a2ce2d716de28b3ffa3eccce39. 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/ARF050401258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb07844c85253f36cba28eb82d7a62ec967f9b64b15b6474a6a5e0b33fabe3851. 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/ARF051100049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc42bea9df1292000b5a6c796e935065d49e633d3c7ddcd2b6f5aeccda2edf5c5. 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/ARF050500366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d6835440aa71dfde7f8c34496e15d8ae35eb1edaf4206dc76fc4a77058e6765. 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/ARF050401250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1465470d5aab482b89b2c152d41081bff3083f894c9233401f46cb1c465820. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/ARF050300510.
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 0x1f1c40b2ad232dd4e9c942da301748368acab5cee499d526ec115676de45364d. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/ART140900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa94fa35c4fd1b6603e5296be0bf0bb23f9b57a452ce74e83a719f409139e6738. Chain 2 (Bitcoin): anchored in block 960173 (2026-07-30T00:11:40Z), 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/ARF050200030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9ec0b1d0a5947e3d3bed43ccef7b68ea527808c8d23b3ab4beb8fdac25bdc1c. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/ARF050300512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5838b60ff1b68126fe0f0eb7415e8fabee679707d73aba6439c7460a9be4e3b5. 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/ARF660000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e141369e8841fce74edb586a033f35ee09e8a52ca7623ca135f0824ce0de16. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/ARF050401246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc2e6f559325f67383022308dc17ffaa99fa9042a81b6c7315587b79dc26805. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/ARF660400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc4b1aafe34e2706a43ab449d683f89e5ccf6d4a42f4c40486b143dae84a3fc8. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/ARF051100048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x262bbd265ebe14c70f4092ea0baf2d9d15b7454682a22c3fd360471d64950e1a. Chain 2 (Bitcoin): anchored in block 960349 (2026-07-31T05:23:41Z), 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/ARF051100050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126912b81ff781a5bbb45cbe4a17cab3e4748b51e3daa7cde7d45595fde0ee24. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/ARF050600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbffc11652e12dfd60df5fd31fd285243d6646023f1bcd6c0dbfa3446d9a8ce58. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/ARA190501462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbffc11652e12dfd60df5fd31fd285243d6646023f1bcd6c0dbfa3446d9a8ce58. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ARA190501462.
Raras Partituras 13: El Payador (En Vivo)
Falú y Moguilevsky 2024 (En Montevideo) [En Vivo]