thumb|Perianes in 2020 Javier Perianes (born 24 September 1978 in Nerva, Spain) is a Spanish classical pianist. He is a participant at many renowned festivals within Spain, including Santander, Granad
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 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 0x86c9bd398cd3f038a4c6af9e071d0a99b28e274306dd0f6da185f13238c8085d. 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/6abe2836-e639-42a2-b199-bb70459b49e1.json and https://artists.proofprofile.net/proofs/artist/6abe2836-e639-42a2-b199-bb70459b49e1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
...Les sons et les parfums - Debussy meets Chopin
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 0xfe105fc3f1c31bfb48aa63f676d830d6a9dde6922cbad7baf4da11f82222bc5b. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FRZ141228060.
Piano Quintet in G Minor, Op.49: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fca9e78cb59db257188e867ffdfac564b0610c0bdde8b6bb69061a1dd365e48. 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/FRZ141507010.
Piano Quintet in G Minor, Op.49: II. Allegretto quasi andantino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85578d299d235af7ead6d09098024abc047f627779c86af7e6d766f277d1eb9c. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/FRZ141507020.
Piano Quintet in G Minor, Op.49: III. Largo - Molto presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54fecf6a168f422e8118176125d3ce365fe57894aa009c282a6be3f0f517841a. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/FRZ141507030.
Piano Quintet in G Minor, Op.1: I. Fuga lenta
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac4f26922fea15d33070105d1d333fb2663ec39aff59d0811a8393252688eb8c. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/FRZ141507040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49fe47e8d13a213f0d5ef29d9178dfea3b9b23f3e77e7e2fb87912f86577cb9d. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/FR7JM1955010.
Cinco Canciones Negras: II. Canción de cuna para dormir a un negrito - for alto and piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x105128219b88e3f94ec0e6a14eb2cb93b86d9ae413788853f8cbdabdadd57639. 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/FR7JM1955030.
Cinco Canciones Negras: III. Punto de Habanera - for alto and piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7454f075a40a4f4cf9846610540139da080b89e1c047de5ba06059c8e1559e13. 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/FR7JM1955040.
Cinco Canciones Negras: IV. Chévere - for alto and piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b8bb2702de7a05a0d25db8f13170c9abb2b76d67ae3126b7ef3b4d4aff80294. 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/FR7JM1955050.
Cinco Canciones Negras: V. Canto negro - for alto and piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86607c3bac6f56c11ec2d42dc484eb2c35ae2ddb06d729bdc5587764bda82aa3. 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/FR7JM1955060.
Siete canciones populares españolas: I. El paño moruno - for alto and piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x049323f5626c09f2feaf2798ab5ec6733d023d047564ecd3955f245a5997a26a. 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/FR7JM1955070.
Siete canciones populares españolas: II. Seguidilla murciana - for alto and piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d450fa030df4d9b5842d64cfe983c0a945d868f06ba001a529fb8a1f374eaa7. 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/FR7JM1955080.
Siete canciones populares españolas: III. Asturiana - for alto and piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9fdc57461ffde29faf664658b39deeefd459ddcde6fc075439c279178b74a3e. 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/FR7JM1955090.
Siete canciones populares españolas: IV. Canción - for alto and piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b59fb34cc7af0bbd60ee6a5f5986049a287ef7555a355484be919a41ee6bf1. 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/FR7JM1955100.
Siete canciones populares españolas: V. Polo - for alto and piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x019f97cc525a95e763e15d167a4484d3812bf6ed2d1b84b330167056c9c78fbf. 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/FR7JM1955110.
Siete canciones populares españolas: VI. Nana - for alto and piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9804d0f776189d31f26897edfb4c137ec6ccaf49d26affb9347ec647bcc96132. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR7JM1955120.
Siete canciones populares españolas: VII. Jota - for alto and piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab986fc423393bc51e6f7e27eeb04081929d411132b37982ad13f0cebd4027a9. 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/FR7JM1955130.
Bachianas Brasileiras, No. 5: Aria (Cantilena) - for alto and piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd364751ec1f2656cd9a2e65753319b6a064f88225d0094c20b5923ea60e44b64. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/FR7JM1955140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1364891d60c97373a0f0e47d2e285515591a58aee23ac3f47f7cb6ee69e2713f. 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/FR7JM1955150.
Cançó catalana, No. 1: En el mirall canviant de la mar blava - for alto and piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe11c314f109e8b27b44cd8007c51aeed1f5f4ce4dcb4a78d90b6f6c82e81e4. 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/FR7JM1955160.
Tonadillas en un estilo antiguo: El mirar de la maja - for alto and piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda495332fd3ed73023d80e4a2acf3b319df22a1acaa7e862bd12951d8458875. 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/FR7JM1955190.
Tonadillas en un estilo antiguo: La maja dolorosa, No. 3 - for alto and piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7af3275abaa52616961f1465f07c5ec41e183bb27cd31455e7ffa1704139215. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/FR7JM1955210.
España, Op. 165: Tango - for alto and piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bdc6eaa0ea9a50825baa4fdd99048512963601ce03f183ae6c9750c7c45a433. 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/FR7JM1955230.
7 canciones populares españolas: I. El Paño Moruno
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc71f45b3bc612916b2d5085b3ae5c3ddb049c610551006cee26e67872a6bc1e5. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/FRZ141537010.
7 canciones populares españolas: II. Seguidilla Murciana
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca66499402af2ae00ef6f87cffaeb147c4fe55137216c4aad15de4191603cb4f. 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/FRZ141537020.
7 canciones populares españolas: III. Asturiana
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa821cd01b224884964da4e9b7c5902fa2165a091aa83288b4387c8a1299ea965. Chain 2 (Bitcoin): anchored in block 960285 (2026-07-30T17:26:40Z), 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/FRZ141537030.
7 canciones populares españolas: IV. Jota
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276fd8f745d6ccc848b35588bc7d6f41907d34ca4be1b763eb517c99bb4e9d29. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/FRZ141537040.
7 canciones populares españolas: V. Nana
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf09110e37210906dd5231451a97b60bdc9f657e2f14f4a5c2cb3f12a1d50bb78. 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/FRZ141537050.
7 canciones populares españolas: VI. Canción
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f072d23dfe687a9d59f70fd136213f5391cd82525c82894ecb8f2abb683566. 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/FRZ141537060.
7 canciones populares españolas: VII. Polo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd5540c5f3a02b3af5a56438abd51531f34a28cfc047ff5056043150a6df15c1. 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/FRZ141537070.
El Amor brujo: IV. El Aparecido-Danza del terror
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb927657cf4fda169c2284c6c8c202a97f332dfecd7e209dd27cb1acc5f8c99. 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/FRZ141537080.
El Amor brujo: VI. El círculo mágico - VII. A medianoche
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eac8058f165dea6cce1f85c36995e9181f44c5872d77aa66af1e62478c41cee. 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/FRZ141537090.
El Amor brujo: VIII. Danza ritual del fuego
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b98872cb544e225cc81d9ff98899dafbf588bee0754920da051cf3c62474b75. 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/FRZ141537100.
El Amor brujo: IX. Escena - X. Canción del fuego fatuo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e6397bb79cb55d05cbb564d3fc5c618615cf650e108505ad97af3ed26dc47c4. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/FRZ141537110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf71347a91ea53b95c2aec24835760599cf6a39fc54ddac2a8ad70aedf6d78f0e. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/FRZ141537120.