Abel Carlevaro (16 December 1916 – 17 July 2001) was a classical guitar composer and teacher born in Montevideo, Uruguay. He established a new school of instrumental technique, incorporating a fresh a
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 0x9cd1aba5981d7528f654a6745e05f82105796d1e287d6670305d1a9291915eac. Chain 2 (Bitcoin): anchored in block 953630 (2026-06-14T12:06:27Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3018bed2-ca76-4ec4-9d9b-1bbc8b39b91f.json and https://artists.proofprofile.net/proofs/artist/3018bed2-ca76-4ec4-9d9b-1bbc8b39b91f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bach: Suites pour luth, extraits - Ponce: Variations et fugue sur les Folies d'Espagne (Mono Version)
Interpreta a Domenico Scarlatti & Fernando Sor
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 0x8995ed991ba0120138f25ca0ef5e1f0ff5d0c3674c206957366802569b808a3b. 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/UYA130300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fc684233ea9d60af4889962c9b0b5b887579640af1d4c344bc5c13c504b4d8b. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/UYA130300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d7b085c198833ead2dd2084fb1bd8e73285c2caea39a3103ff0fe929749e94. 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/UYA131000125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d64fb8d0f284cbef064b0de10b177de734d3364778d3117670e1fdb04117364. 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/UYA131000126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e0e91e386e01999e0afb201712f64ddcf5d8177df164e2bf95fcf23f01707e. 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/UYA131000127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90369e9981124d7c9fbd8789eca2c9f5720e75593439177a9d6110f2525ca582. 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/UYA131000143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc791d0c0e4fd9f28784511348a1ed5f4c69a0477b5c85e455525d29f224062. 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/UYA131000153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf969d1e750e8a7e385a2f5a5025fe1dc3da5c7085c46de4f5c5aa9a0b24087d. 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/UYA131000158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d639c7453039857e0773d5a2778ed6b37b2c67ae0019b21319ddcd033784ff. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/UYA131000139.
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 0x6623b3400ea0714a9844577a708415ffc461441080c0dabe622cdeefe4a10d55. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/UYA131000142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa51c1d8fbddd100b6c348d01cdcc2665783da8a0d5379c13c9766e46e4dda31. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/UYA131000156.
The Guitar of Abel Carlevaro, Vol. 1 (Remastered 2021)