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 0x46df53375cec13c3feb609290e3d40042ca182f0054951758e7dce4df9050eaf. 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/ef302ea5-0324-4e49-80b8-578bbb35e24b.json and https://artists.proofprofile.net/proofs/artist/ef302ea5-0324-4e49-80b8-578bbb35e24b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Capriccio Italien, Op. 45 (LoFi Version)
Symphony No. 9, 'From the New World', 2nd Movement (LoFi Version)
Moonlight Sonata 1st Movement (LoFi Version)
Brandenburg Concerto No. 3 (Lofi Version)
Jupiter, The Bringer of Jollity (LoFi Version)
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 0x9e1e848023e5d36477e64e28c6aa726ccbfdf4f28fba58dbafe0ed6ab3f0d155. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/PL2DY2400598.
Va, pensiero from Nabucco (LoFi Version)
Symphony No. 9 in D minor, Op. 125 - II. Molto vivace (LoFi Version)
Barcarolle from The Tales of Hoffman (LoFi Version)
Piano Concerto No. 21, Movement 1 (LoFi Version)
Symphony No. 40 in G minor, K. 550 - I. Molto Allegro (LoFi Version)
String Quintet in E major, Op.11, No.5 (LoFi Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e1e848023e5d36477e64e28c6aa726ccbfdf4f28fba58dbafe0ed6ab3f0d155. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/PL2DY2400598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81149f96e43c24c8fc8d080458620bdccdf3040a063403dd8fbbc41e76587306. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T16:01:14Z), 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/PL2DY2400406.
Pomp and Circumstance March No. 1 (LoFi Version)
Die Zauberflöte (The Magic Flute) , K. 620: Overture [LoFi Version]
Violin Concerto in A minor, BWV 1041 (LoFi Version)
Piano Sonata "Pathétique" No.8 in C minor, Op.13 (LoFi Version)
Requiem in D minor, K. 626: Introitus (LoFi Version)
Toccata and Fugue in D Minor (LoFi Version)
Symphony No. 41 in C major, K. 551, "Jupiter" (LoFi Version)
Sonata No.21 Waldstein 1st Movement (LoFi Version)
Concerto for two violins in D minor BWV 1043 (LoFi Version)
In the Hall of the Mountain King (LoFi Version)
Cello Suite No. 1 in G major, BWV 1007 (LoFi Version)
The Swan (The Carnival of the Animals) [LoFi Version]
Requiem in D Minor, K. 626 Sequence VI. Lacrimosa dies illa (LoFi Version)
Waltz No.16 in A flat major Op.Posth B.21 (LoFi Version)
Swan Lake Act II 10 Scene (LoFi Version)
Viennese Sonatina No 1 in C Major (LoFi Version)
The Well-Tempered Clavier, BWV 846–893 (LoFi Version)
Nocturne (Op. 9, No. 2) E-Flat Major - LoFi Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce09fbdb106b020486188223e9a0fc8c8002d4c7d18d79328bc595ac972586ca. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:09:46Z), 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/PL2DY2400912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c9c661a5af414474d6c5234f886d1fc4a8875dde843c35b4b2dbab71b8d4e1. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/PL2DY2401018.
Piano Concerto No. 21 - Andante (LoFi Version)
Arabesque (Op. 100, No. 2) [LoFi Version]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a8599328c39f645b284828e6abbde1d20bb87a2e2b3fe0a05ecf8c37b59bb05. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:12:49Z), 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/PL2DY2500005.
Etude Op. 10 No. 4 Torrent (LoFi Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafc530c513b29326fb9903cfbf44da021e3e6f1601c57b560f7b30c531632c99. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/PL2DY2500051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb56f7dba6b258fdf96996c0314d69bf09b158dfed3167f964425b804ead295c. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/PL2DY2500064.
Goldberg Variations, BWV 988 (LoFi Version)
Goldberg Variations, BWV 988 - LoFi Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c074c939d2cdfa1b66bbec33cf262f00ddcaf0f54b06d6076654e2f181f9d0f. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/PL2DY2500109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a544e06fa9beace3aeacc66e0fb4588ebed511fd2a5f86af5446aaf952df566. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T11:20:53Z), 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/PL2DY2500138.
Triumphal March from Aida (Marcia Trionfale) [LoFi Version]
Carmen-March of the Toreador (LoFi Version)
Carmen-March of the Toreador - LoFi Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9fc76518f26c70514e16c7efb26f9669d4b712d8ebd5cf548c277c9d6a2196. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/PL2DY2500270.
The Nutcracker Suite, Op. 71a, V. Arabian Dance (LoFi Version)
The Nutcracker Suite, Op. 71a, V. Arabian Dance - LoFi Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x130a31ae5956bd38de3801a39de9026a94c8d6721a68b0a0c22c49a4a8e21372. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/PL2DY2500287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe420811b9b629a33f8b1d7504e58362d6e4f8173812f9dc9339630252f07b90f. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/PL2DY2500288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb64e037cf7b18e1b0a97c210a5a94ea73a012bf9e39a48bcc0301f501560ca7e. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/PL2DY2500289.
Kinderszenen Op.15, No.1: "Von fremden Ländern und Menschen" (Scenes from Childhood)
Kinderszenen Op.15, No.1: "Von fremden Ländern und Menschen" - Scenes from Childhood
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e717495a0aebcd415fd34b3d183108a718756f8db76e323be49cb48b5929aa6. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/PL2DY2500313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f66aecbf00c8f352a656ac0b9eeb93882bb3f7d5e81e58ee6d2689c04441a35. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/PL2DY2500320.
Carmen Suite No. 1, Les Toréadors (LoFi Version)
Carmen Suite No. 1, Les Toréadors - LoFi Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1821c55984b6e02f9e6be3cadbed7506cbd1971af162251be23e2af5db8dd27. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/PL2DY2500331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d09bf0817035ec3525a1edeec53cf88af7a461780f3ba653fedd805820d2e1. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:51:59Z), 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/PL2DY2500295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa44416608ad40f0b66934d9236b77ccd0bf7d6e703c1eb9987fbebbabfb54a84. Chain 2 (Bitcoin): anchored in block 957778 (2026-07-13T00:08:48Z), 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/PL2DY2500333.
Wedding March from a Midsummer Night's Dream Op.61 (LoFi Version)
Wedding March from a Midsummer Night's Dream Op.61 - LoFi Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1159fd70ed36ea1a70546907b1715ddba06bf22c98930a4c2cb631355f34d089. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/PL2DY2500293.
Ecossaise in G major - WoO 23 (LoFi Version)
Ecossaise in G major - WoO 23 - LoFi Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed60f4ba30062067dbe2abbd13ad2c3187367bc2b6a3dd9fc50fd5a84c57a849. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/PL2DY2500468.
Turkish March (Rondo Alla Turca) [LoFi Version]
Ecossaise in Eb Maj – WoO 86 (LoFi Version)
Arabesque L.66 No.1 in E Major (LoFi Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb95fc8de006aa5b02a76b2588adc01b6316e3e73f601720e56237292ff0862e2. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/PL2DY2500507.
The Four Seasons - Winter (Lofi Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x935062a40636343f67dda63cd06db16d18b945af0b15696a3139c0845078bce8. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/PL2DY2500576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f71e20c1da1c9d1ee6273a492eade1a8598b89b4903583cddef2357b9d2f70. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/PL2DY2500577.
7th Symphony - 2nd movement (Lofi Version)
Requiem in D Minor, Dies Irae (Lofi Version)
Sonata in A Major Allegro (Lofi Version)
Hungarian Dance No.5 - 4 hands (LoFi Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b332fd4c9322d6621e31f47815e3274f17c95debb00a80dd35c16ff5296a2d. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/PL2DY2500726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x793ff29fe3d29fe9f2dda20d7979f30759857f6aaa1791f64d6a462f1a9eaa73. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/PL2DY2500811.
Magic Flute, Queen of the Night Aria – Piano Solo (Lofi Version)
Requiem in Dm, K. 626 – Confutatis Maledictis (Lofi Version)
The Four Seasons - Spring (Lofi Version)
Nocturne No. 21 in C Minor (Lofi Version)