thumb|220px|Juan Pérez Floristán Juan Pérez Floristán (born in 1993) is a Spanish classical pianist. Biography and career He was born in Seville in 1993. He has been in contact with important perso
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 0x95767d99aa26451597d7023343ff0ba6d7acb47da97aa221dad3d3a61886fbe2. Chain 2 (Bitcoin): anchored in block 953754 (2026-06-15T06:45:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ae4aea54-e1ab-494d-8cd4-ff7cfb7c9c17.json and https://artists.proofprofile.net/proofs/artist/ae4aea54-e1ab-494d-8cd4-ff7cfb7c9c17.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ravel & Debussy: France (Edition Ruhr Piano Festival, Vol. 29) [Live]
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 0x5f88e9bac79655bcc5f2ec0486bcd7f043f3bc2b03340822dd663835ee3d0586. 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/DEAQ71227408.
Juan Pérez Floristán (Edition Ruhr Piano Festival, Vol. 30) [Live]
Spanish Music in the XX Century - Albéniz, Falla, Turina, Granados, Vilarroig
Clarinet Sonata in F Minor, Op. 120 No. 1: II. Andante un poco adagio
Brahms: Complete Clarinet Sonatas & Trio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x662ab90a7c2948225916014c8852ccaef9026863b0bfb9cf57bd6d1113191f9e. 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/ES59G1820802.
Clarinet Sonata in F Minor, Op. 120 No. 1: IV. Vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedebe0e3ac67d33d6f0d028e898df72eec6a9d378b2c36bb9fa6574ef1577cd4. 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/ES59G1820804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70e29223f12d7fd1895b6888c4e8775d8c1fb58baed20c480baa02c85890be4b. 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/ES63I2210003.
Clarinet Sonata in F Minor, Op. 120 No. 1: I. Allegro appassionato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c616777db0456b410253b385d0b9218e3b9eb59d030d6bfd9fe6c65f3c60a5e. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/ES59G1820801.
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
Clarinet Sonata in F Minor, Op. 120 No. 1: III. Allegretto grazioso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26489efed0ea369a6b6ebbe93b6e1a4fd24bbee14e3fc213990776b3a3367e82. Chain 2 (Bitcoin): anchored in block 960339 (2026-07-31T03:13:37Z), 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/ES59G1820803.
Clarinet Sonata in E-Flat Major, Op. 120 No. 2: I. Allegro amabile
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73a5fa88d5db2d36f0a839f006fe55c40ee369c145f591d4f5c7ba338508d37d. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/ES59G1820805.
Clarinet Sonata in E-Flat Major, Op. 120 No. 2: II. Allegro appassionato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x363225c41f59f0628f36973a1cabe6ea3bbfad1025f962c5b48fae3f7dd863b9. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/ES59G1820806.
Clarinet Sonata in E-Flat Major, Op. 120 No. 2: III. Andante con moto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bcb51e58eafa7b9e9ac9d0ee78a34284e63221ef37dfc6cff86c291cc1563ed. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/ES59G1820807.
Clarinet Trio in A Minor, Op. 114: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c6b1e0a559b1eb2b178b2a1d37fcceecf69a2059a9852f0536c683972db45a5. 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/ES59G1820808.
Clarinet Trio in A Minor, Op. 114: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e40e2b6a2a4d284bba55e1ff4d51784410ff8bb982974cf84797ed1276b5d58. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/ES59G1820809.
Clarinet Trio in A Minor, Op. 114: III. Andantino grazioso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04750d42c75f5079180dece162dbe763b33e78e8fd1c016eac4bbb961afadb07. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/ES59G1820810.
Clarinet Trio in A Minor, Op. 114: IV. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc86552468754f85278e3e966de442c9ee78573b3fb9a140a7516d6469cccd537. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/ES59G1820811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3538991b2d6e6cadc3094d35663f6b61a5c7ef50930275224b3326ce97976bb4. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/ES63I2210000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68a0e78f50a3ec1e78755c96d2d40abe97388773893edb3a3fdf0320d6795bcb. 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/ES63I2210001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a94c81b18252091838feb0b0038dd77800a4468c58475e28de97254533c56d. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/ES63I2210002.