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 0x26ec40d75a0f68cc48284e1a323ad16d696e6684dafb79dcf02ed67096410480. 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/48110f3d-0993-4e50-aaeb-09b9fac08b33.json and https://artists.proofprofile.net/proofs/artist/48110f3d-0993-4e50-aaeb-09b9fac08b33.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mozart For Babies Brain Development: Mozart Lullaby for Kids
Piano Concerto No.20 in D minor, K.466, II Mov. Romance, (Lullaby 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 0xfdd7479ec02fd518f88a1cdd7d236766a2eec322dd10fcd9ed66240618288c86. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ITK262001692.
Eine Kleine Nachtmusik, Serenade in G Major, K.525, IV Mov. Rondo (Lullaby Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd709670c5559782326fcb3b49f56051282cbeff1e541a1ecc08be6ec6ceb14f0. 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/ITK262001693.
Piano Sonata No. 4 in E-Flat Major, K. 282: I, Minuet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x321c6997e19f29876e23cd8d0606a5be6d794fa1a151e7e8ec1d475a9041c526. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ITK262001696.
The London Sketchbook: Rondo in D Major, K. 15D
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf48bfba190ec318ac907c7e927e540ce2176d76abc6d9b4d08f46718ae6fc8af. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ITK262001710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b1e8b105f85d2b79458b49063ccf9f62ae6ef6192bd192ba8770b5d1a77b87b. 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/ITK262001711.
8 Minuets in G Major, K. 315g (315a) : II.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44165cb3545cac355c8f9520e27490c0a47a4f5449af879cff764895f8f6eb7e. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/ITK262001713.
The Magic Flute, Die Zauberflöte, K620 Aria 21 (Lullaby Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb110fa4b4666ed9014acb406173d7ec91dfa147fe1da4a3081cef95615654717. 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/ITK262001714.
Le Nozze Di Figaro Act II: Voi che sapete che cosa e amor, (Lullaby Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a32902785c9a9a070547664854c1a5f88d8b8e0b7da5987b5cf3ff45eada9d. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/ITK262001715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4633d08f720ced70e5104887444e17c63b0575b082a301f54d10db5397c27e4a. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/ITK262001716.
Le nozze di Figaro, K. 492: Non più andrai, farfallone amoroso (Lullaby Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81bebd9f41581c6a509ccbb527b91e6852210494791ad6b771d6e3dbca32d787. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/ITK262001717.
Adagio for Glass Harmonica in C, K.356 (Piano Transcription)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9526defc1fbe6580c0d9764758fc464e9e2463f8d5ea8619db8a45c1e797ac61. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:04:44Z), 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/ITK262001718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe3405690b0275b2af9d316a546b13e1f030a516f586b88433cdbc95e320c1f4. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/ITK262001720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb27631b358efde22b1c13c9438f6cb650a3370fa39c89781828cdcdc8115b39a. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:35:15Z), 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/ITK262001721.
Mozart Lullaby: Classical Music for Babies Sleep with Calming Ocean Waves
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e0cd0df80189e75746912f8d05e912629b38e854f93ccaa9ac1ff890ddbad26. 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/ITK262001722.
A Musical Joke in F Major, K. 522: IV. Presto (Lullaby Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f28a40a55dcaa3b1384e2e39e60d8adc7711aaeffb64ea5c77c26253727d11. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/ITK262001723.
Symphony No. 40 in G minor, KV.550, I. Molto Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e9629bd90556d1b49261694333c68edde006c1c80ef9a3ae48db40a9adba2c. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/ITK262001724.
Piano Sonata No. 11 in A Major KV. 331, Theme, Andante grazioso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1e7e836196448b7088cb08cd7c0e58b0f8159148d186fe0861aa9e9363b164b. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/ITK262001725.
12 Variations in C Major, Ah! Vous Dirai-Je, Maman, KV. 265, Theme
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0051f320a730eb4ee1dc791a9bc64f8905fc9a0b9b0a13be00b46f58c3c027ae. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/ITK262001726.
Relaxing Classical Cello Music Lullabies for Baby Sleep: Lullaby For Babies To Go To Sleep, Baby Song Sleep Music
Classical Cello Music Lullabies for Baby Sleep: Lullaby For Babies To Go To Sleep with Ocean Waves
Mozart Lullaby for Baby Sleep: Mozart Lullabies, Classical Baby Sleep Music
Piano Sonata No. 11 in a Major KV. 331, Theme, Andante grazioso (Guitar Lullaby Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9575f75db7caecfc843854128c8b7d80ea4e723ec8ae093f96f7270920836b2. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ITK262100254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4b081b7c9e2f60aa4e52a3a5c4e3b42e91c74b6273bb5bb0222c425adaade7e. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:41:39Z), 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/ITK262100255.
Piano Sonata No. 11 in a Major, KV. 331, III. Turkish March (Guitar Lullaby Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85c911f6c08ef3fcfc2cbbcaf745eebc9a16349b934f40c21816d11cc37631ff. 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/ITK262100256.
Eine Kleine Nachtmusik, Serenade in G Major, K.525, I Mov. (Guitar Lullaby Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x200d000aa1a9d474d073e823220c016b6008de9d76b82e8bc5350521e2f3f7f9. 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/ITK262100257.
8 Minuets, K 315a No. 1 (Guitar Lullaby Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fba0e6656ce556bf64e93df2aa5cb5fcbfb61acad4f77303cdc7706fecf5136. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ITK262100260.
Wiegenlied (Lullaby), K. 350 (Guitar Lullaby Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9992061248bc93ece33a4677219712a8a18fc077488465ec2ff186886ad17f5. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:25:24Z), 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/ITK262100261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e83305b4980342c478e4ae1940e8e1def1c956e5d888446ffa89c2a34e593f5. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/ITK262100262.
Andante KV.15 mm (Guitar Lullaby Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ece8ec6b1bc7b2b83148e3a5ec8be4707b7f493cd3d39c013b803f4c917ebf. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T19:02:36Z), 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/ITK262100263.
Allegro in C Major, K.1b (Guitar Lullaby Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda23c9d31afe34d6d5d3822512d38c1c84cdcb81490bd623aa50e85f49d757d6. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/ITK262100264.
Le nozze di Figaro, K. 492 Non più andrai, farfallone amoroso (Guitar Lullaby Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92c385869373a9d1455ea2bebc6815ee49072d7a6873e6aa52becf216f3fa3df. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:46:49Z), 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/ITK262100266.
The London Sketchbook Rondo in D Major, K. 15D (Guitar Lullaby Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9cdc4df927bb0890daa0321e9b6177706592171268496d973b31fb2c07cc7a1. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ITK262100270.
Le Nozze Di Figaro Act II Voi che sapete che cosa e amor (Guitar Lullaby Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2389c9b3b713459a30f61e4443d30248776ee623323082d75ac311e629ab1ff6. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/ITK262100277.
The Magic Flute, Die Zauberflöte, K620 Aria 21 (Guitar Lullaby Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b55ae4300816bd5c4fd212dd557eb4f1e1c63fdde4be807d7a0b5c6cfbcc546. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ITK262100278.
London Sketcbook, Allegretto in C Major KV. Anh. 109B No.1, 15a (Guitar Lullaby Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x585f8ab9c814462cc18ca3773ff7d89ff2df1ec58f9807004292338942ebb97f. 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/ITK262100279.
Mozart Lullaby for Baby Sleep: Classical Guitar Lullabies with Ocean Sounds
Classical Baby Lullaby: Essential Classical Baby Lullabies for Sleeping Baby
Classical Baby Lullaby: Classical Flute Lullabies for Children
Piano Lullaby Music for Babies: Soothing Piano Music for Baby Sleep
Guitar Lullaby for Newborn: Soothing Instrumental Guitar Lullabies for Baby Sleep
Baby Lullabies With Calming Ocean Sounds for Baby Sleep
Beethoven Baby Lullaby: Classical Lullabies for Baby Sleep
Mozart Lullabies: Classical Sleeping Music for Babies and Children
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a7f82e8f13fae43e32564cc9b067013b8a2ca32404bce0864ef126f93ef94d. 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/ITK262102271.
Guitar Baby Lullabies: Lullaby for Baby Bedtime, Sleep Music for Sweet Dreams
Bach for Baby: Classical Lullabies for Sleeping Baby
Soothing Lullabies: Calm Baby Lullaby Sleep Music for Baby Sleep
Bedtime Lullabies: Lullaby Songs to go to Sleep