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 0x533ad3b5fc73a77b6402eb03094bd73e94caf28fd22d00bfc643961528103219. 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/71ea6f4b-6eec-4c27-8305-77eca2056025.json and https://artists.proofprofile.net/proofs/artist/71ea6f4b-6eec-4c27-8305-77eca2056025.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 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 0xf61e0a084ea6f5eb5d7a3b5769904c19747ace3a533cf0f258d69a2173e6315d. 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/ITP902300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ca857c81798d3de9a0643f9eb75b201dabe0ef6241dd17534ca1c0fbaf06b98. 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/ITP902300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe4eff1f3630b71586b62720206d26c484d520ed6de7bd3d8bf56fc19082c3ae. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/ITP902300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae0d9053a6199d022d7fe8fd1a7043f2852f9d10ff04cbad6db623b18dc5472. 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/ITP902300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232b09dae11bbd6b98e23f2f7a805a48d994de9c14e87aaefa85b2a2e67bb5e3. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/ITP902300005.
Liszt: Music for Two Pianos. Réminiscences de Don Juan & 2 Episodes from Lenau's Faust
Liszt: Réminiscences de Don Juan, S. 656: I. Grave
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaed7d0dff6a7378cc6711da0d38ec389dc8edc604ab7a970cf69ed48fd40b93. 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/GBAYC2302399.
Liszt: Réminiscences de Don Juan, S. 656: III. Duetto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95edb560d3a5a67e38f6ceab648ab226bf2e728dd591bddc28e104b4298b1bb6. 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/GBAYC2302401.
Liszt: Réminiscences de Don Juan, S. 656: V. Variation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x496a1c188a87fbc67aead1e6df15d9af23a816973751e8994326c81e68ece8c7. 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/GBAYC2302403.
Liszt: Réminiscences de Don Juan, S. 656: VII. Presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b6e3767d2913a3db8c3e7ff66601446959f56bc1ae23bcbb1700c4a5384c3c7. 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/GBAYC2302405.
Mendelssohn, Bruch: Konzerte für 2 Klaviere
Piano Concerto No. 10 In E-Flat Major, K. 365: 1. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cf391fe1632fd1da2fe81eddb9b219932909f1dc5eae29b11d5f88e29447e36. 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/NLA508808201.
Piano Concerto No. 10 In E-Flat Major, K. 365: 2. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x260985d4f81e677dd7c3b063ef78b471c6ca4eea4ae9ae4b54484c09f21a7075. 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/NLA508808202.
Piano Concerto No. 10 In E-Flat Major, K. 365: 3. Rondeau (Allegro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff9bf8c7789156b7ec210e0224c573459a0b8079bcd6fddc6e6370d3461e2a9. 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/NLA508808203.
Piano Concerto No. 7 In F Major, K. 242 - "Lodron": 1. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aac0ce5efe233982c50923f97753a214031cbb8b6c6182e402a71a01b16b525. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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/NLA508808204.
Piano Concerto No. 7 In F Major, K. 242 - "Lodron": 2. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf73be49182f2c9bed95ded92460b83a26634a26d551f75174aaf981422a102. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/NLA508808205.
Piano Concerto No. 7 In F Major, K. 242 - "Lodron": 3. Rondeau (Tempo di menuetto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d1ba9deb7f9d021d88ce6b6ceed1d68111a5da4a6205327310b252da813efc0. 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/NLA508808206.
Stravinsky: Concerto For 2 Pianos; 3 Movements From Petrushka; 5 Easy Pieces; 3 Easy Pieces
Bizet: Jeux d'enfants / Fauré: Dolly Suite / Ravel: Ma mère l'Oye
Jeux d'enfants, Op. 22: No. 1, L'escarpolette
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b9ac5a590f2c9f3ffe41cecf706bcda87d1f37370fd09dbd4e2bea4d62ef92. 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/NLA508692101.
Jeux d'enfants, Op. 22: No. 2, La toupie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe07fa307162b1c884b61a118bd797ddb0c984a149b19df3a297c9afd3f534af6. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/NLA508692102.
Jeux d'enfants, Op. 22: No. 3, La poupée
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d916d22b8d9d0aaf907ef0afddf8b46ca9040d995777374de2996e792cf0f9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLA508692103.
Jeux d'enfants, Op. 22: No. 4, Les chevaux de bois
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976d9ea743450a8d41cac23dc20831b995fa6b142245e0d178f73784b247b1a4. 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/NLA508692104.
Jeux d'enfants, Op. 22: No. 5, Le volant
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b41d4410d2a8fec3bbb2cf44348cdc89e235786f7c1399ce24340baa2a1285. 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/NLA508692105.
Jeux d'enfants, Op. 22: No. 6, Trompette et tamboer
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8324df872ea0954c6895b24c1ef267f6075db6364b0af1d60dbbf7726f5e6fa. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/NLA508692106.
Jeux d'enfants, Op. 22: No. 7, Les bulles de savon
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x515e9f451f8afb6f2f932c137d92419cd145f65f92cdbe920ef4c50b2f1471ed. 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/NLA508692107.
Jeux d'enfants, Op. 22: No. 8, Les quatre coins
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf4662d6d3d3b7cd7a79462c9c1702326eed8cb69bf433eba990a63f3c868b6b. 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/NLA508692108.
Jeux d'enfants, Op. 22: No. 9, Colin-maillard
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a56522582d2ae5bea36e70e199bd0814fc870f07421371294f6ad0dcf97477. 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/NLA508692109.
Jeux d'enfants, Op. 22: No. 10, Saute-Mouton
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e601966e044cad1bb432b0eef3efe8f20c91148247746b8fe2a53477f5a0239. 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/NLA508692110.
Jeux d'enfants, Op. 22: No. 11, Petit mari, petite femme
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71eb4129f4d8fb9738d474b94d804815ae3942865fb8b63f3aa5ae6a4efca2d. 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/NLA508692111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf12d1342eb7b4b1a558f605ebe967799a23e3dc95197b12872e01d759dd9c90. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/NLA508692112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae649431889941e47bc178985ff810e6475ff44908983108b867fc1bf5c29b0. 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/NLA508692113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37437a82e9a67e63a93847f8a0421dbf8c1e784e95447002e317467b464c9545. 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/NLA508692114.
Dolly Suite, Op. 56: III. Le Jardin de Dolly
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0563f754bb41f797db3a4f775b0e2ec840c551fbb98ff4815a2dfd294cf68356. 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/NLA508692115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x278fb415d4e5b94598a82ddea6b4e3a788d0bd4e45f920e0eeb05d37c6a1b754. 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/NLA508692117.
Dolly Suite, Op. 56: VI. Le pas Espagnol
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f1c3adeafaa0e89af403219a6a704f2518db687bddd846f4fc0fceab8546d82. 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/NLA508692118.
Ma mère l'Oye, M. 60: I. Pavane de la Belle au bois dormant
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea9140a8ca3318df58fca309bb85d1d2ca6055acfe727f8311c55bd8e34e856. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/NLA508692119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cdf00d8825340280f3d94581ac4ae9fcfedeb92923fe12ac69e6c4eb4720943. 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/NLA508692120.
Ma mère l'Oye, M. 60: III. Laideronnette, Impératrice des Pagodes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f81b23503ac8a877f6c861a07bc2f00697b22a11e961361b37b276014f2e6c. 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/NLA508692121.
Ma mère l'Oye, M. 60: IV. Les entretiens de la Belle et de la Bête
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf877697bc0937e4bf882cc8c7657ebe9551b613e03a54ff3f3b83bfe5bc3b0b. 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/NLA508692122.
Ma mère l'Oye, M. 60: V. Le jardin féerique
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30b9435ce33fcf20087758ccd0f2a2f653f2797c11c76081dd091bcccd098347. 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/NLA508692123.
21 Hungarian Dances, WoO 1: No. 1 in G Minor: Allegro molto (Arr. for Piano Duet)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3d3081725c9460b4f4adc4a293b121ab426959eb5d71eea81e2e117f953d7db. 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/NLA508127001.
21 Hungarian Dances, WoO 1: No. 2 in D Minor: Allegro non assai (Arr. for Piano Duet)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c6b894133691992cddc853ea71d713f2c0fbfff9e83945b651748ad88ee8a5. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/NLA508127002.
21 Hungarian Dances, WoO 1: No. 3 in F Major: Allegretto (Arr. for Piano Duet)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc53808b3d6ca19573401841cccecbfb5d1f40381134eadadd4d6c7cc45adb9d9. 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/NLA508127003.
21 Hungarian Dances, WoO 1: No. 4 in F Minor: Poco sostenuto (Arr. for Piano Duet)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9af3fa429d339ee1184a36b6a7aab5e8cd2de3b64a5bfd8fe60bc646edeadfa0. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/NLA508127004.
21 Hungarian Dances, WoO 1: No. 5 in F-Sharp Minor: Allegro (Arr. for Piano Duet)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa47c64564bc64b9be9988fd55274deda8b56a334a4c6d2f14ec3d9c862b67345. 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/NLA508127005.
21 Hungarian Dances, WoO 1: No. 6 in D-Flat Major: Vivace (Arr. for Piano Duet)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56ec9b9f818617cecbcd3a4f8e8f588f3f4d705c4ddf26a81f04cea89a140200. 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/NLA508127006.
21 Hungarian Dances, WoO 1: No. 7 in A Major: Allegretto (Arr. for Piano Duet)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d8dcde4193525e28cbb241c409ae320368fc8fecd5c8dd9a7406f8f18de279d. 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/NLA508127007.
21 Hungarian Dances, WoO 1: No. 8 in A Minor: Presto (Arr. for Piano Duet)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7972a17a48edd7bbd2e8b371c93bb3b3ea640fe3a602916e6820e0611f3afae4. 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/NLA508127008.
21 Hungarian Dances, WoO 1: No. 10 in E Major: Presto (Arr. for Piano Duet)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebb5e03fc86f4f952cffef36a41570d748c7a2f42c188d5b5146303c53b468b5. 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/NLA508127010.
21 Hungarian Dances, WoO 1: No. 12 in D Minor: Presto (Arr. for Piano Duet)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd99a5734edab2e6ce9531937b903ed080ab8f582d003d7d5dffe2af840efdb. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/NLA508127012.
Bartók: Sonata for Two Pianos and Percussion & Pieces from Mikrokosmos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ae2094a6b4a77c0f3a87e29e831f2644bcb807c69d2262cbcd3d4a66615170d. 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/USQX92401557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe938995d49f7f14843686386f9178af2a6a49e7d108394da32cabe0b37a9419c. 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/USQX92401568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c709014da50d6b8f54981c662fb1b477196f33e853f6e6dcf48ff53f8bb35ae. 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/USQX92401558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90317c3689987fc73ed08f97694c4cb63f58e8fba8406de7daa1f84978d95d58. 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/USQX92401565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c3f6378840ed0ce5f4aca483026affbda7daa1f1fa217090a57db42ecf9196c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USQX92401569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf0248aceda9ae9a94028b46b360dee06dff6d4c3c407406f4ce22d9c3a501c4. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/USQX92401560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a4e1e3dd133ef056784fde7e7967717149a20f0930c04d5d44aa9870fc6555. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/USQX92401561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90480e89627ff2b7e5681572b9234779a72ccd2d3189326a1eaef0385f437c02. 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/USQX92401562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaf0f4a884c977fa464acf73c7aee6e3325e2a13df64d0b60b3ca8847f7ba3a0. 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/USQX92401559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa485537e9602dbeca4e59451c07a6878f6a5e40d353d2bc16f192c0a493e74. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USQX92401564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3bf8836c5ca9e21df4a4008f3ef2cbf1992ec73da3ab59f7ab7076eafef2438. 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/USQX92401556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d4a21ce27468ff456de5fc8a8572a976596edabca17c8b6b5fad2bd47639c88. 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/USQX92401566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1399a75999084f9d186c3fb129d74cfef692c958e8bb43c432ecc937f5e199c. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/USQX92401567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84cb731aed4bb2f818493b91bd41284fa732d878398c22945349d6cc42f8661e. 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/USQX92401563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2731317cd53bbac5bf5fd16e93e0ebf2e5434eb03fd1fa7f370b74acfdf7ab5. 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/USQX92401572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f208427644376b50fcdda09bd3253bf7bda78a0960d8e91b80e8dc65433b268. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/ITP901800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b3701a19055cd28faf48d069f5caf014d81ae2dadbd3bdece0ec7b7ba0ed441. 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/ITP901800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0443666b5dd11e1961cb6ed610f1b42a4fcb701e539987c57051a762294d83a7. 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/ITP901800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb9f8fef902c7465d82e5b5cf8238d265985b74d36f34d2902f8ebdc6a40c02. 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/ITP901800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0990b7f1afda94b5745520de9d541dae73ee9e91ac854d9a5cf1bd6dd9a61df6. 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/ITP901800008.
Mozart: The Piano Concertos (12 CDs, Vol.7 of 45)
Saint-Saëns: The Carnival of the Animals, R. 125: VII. Aquarium
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7137f2b73dcbdad2c27bcda1e39475abcee8e64df9fab01445567991523e4354. 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/GBAYC2002604.
She Came to Me (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x334fa3d9d53dd4b1a50419328c0ef075d968e8bc92f5241ddfd728b1dec73abc. 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/GBAYC2301233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47cf1d0dd51695073806046ee4d6fe851d301746c39950792142af2926118e5f. 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/ITP900900023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x118878d20f0c131fb1e605faad0cb8f839ec1a425df865a6ed25ecb7610285e3. 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/USSM10406825.
Klassik 100 Meisterwerke: Klassik die man gehört haben muss
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60ba721b0f81a218ec0a25389f9a01d56b665b94b1dd0de259ec1eec8cfe27e4. 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/GBAYC8300569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4605356cd6eb8787d2daeb2e022f05818d563b958688b7d2b7df1485b83859c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBAYC2301231.
Klaviermusik 50 Meisterwerke – Klassik die man hören muss
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc62bad0cac765dd502c1c0f36492e93cc50ef446f0b5bdf5b32b1a9f8e66e7fc. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/GBAYC8200842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe22265e40e66a84fe6ab310ca62d170ded76e15847b8af1efb45435fac45821b. 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/GBAYC2301228.