The ABRSM (Associated Board of the Royal Schools of Music) is an examination board and registered charity based in the United Kingdom. ABRSM is one of five examination boards accredited by Ofqual to a
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 0x16bc8f89aea52898aa6064794c7404f908021786acad4adf2cfafec2a039db2d. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9a5d23a7-3d28-4c9c-9e89-52d3d12743ee.json and https://artists.proofprofile.net/proofs/artist/9a5d23a7-3d28-4c9c-9e89-52d3d12743ee.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Piano Exam Pieces 2019 & 2020, ABRSM Grade 2
Piano Exam Pieces 2015 & 2016, ABRSM Grade 6
Piano Exam Pieces 2015 & 2016, ABRSM Grade 5
ABRSM Flute Exam Pieces 2018-2021, Grade 8
Piano Exam Pieces 2025 & 2026, ABRSM Grade 7
A:1 Scherzo (3rd movt from Sonata in A, Op. 2 No. 2)
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 0x7cdc5283b694b136df20d158f2c17687853faa8f9f2f78144e97106b30e72daf. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBEYQ2457601.
A:2 Pop Corn (No. 18 from Confections: A Piano Sweet)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2515a2746289fae12382559eb7759dc21d39e9077260b155eb9890207b340987. 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/GBEYQ2457602.
A:3 Le coucou (Rondeau: 1st movt from Troisième suite)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x630606f022302ee8e65fa6769223868cbf4bb87990cd91b3cef07bd5afda8a91. 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/GBEYQ2457603.
A:8 Allemande and Courante (2nd and 3rd movts from Suite in D minor, HWV 437)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe11b936c00fc226d07f55e43b07dc3e18c7c6e5be9dc51533021acefb0c4b823. 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/GBEYQ2457608.
A:12 Allegro (2nd movt from Sonata No. 6 in A)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb78252818cfbe390be31190ed0032eda490a18dd129bf7e28a0ed4512f6799. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBEYQ2457612.
A:13 Les sauvages (from Nouvelles suites de pièces de clavecin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8cf618db6aaed5584c592bb3c7542f3803aaf77c90773ec39146d667f30cb49. 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/GBEYQ2457613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaced890454cccc0dcdb9d977c53187bccb84b64ab06e2c6bf52c6123cef9949f. 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/GBEYQ2457614.
B:1 *** (No. 30 from Album für die Jugend, Op. 68)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc80386bc77ac279fe6ccf077c52e40c0dac127222c0825e6ba8e9ac19023b5c2. 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/GBEYQ2457617.
B:2 Adagietto pianissimo (No. 1 from Suite de danzas criollas, Op. 15)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc9020d877c144c264c9413842a1098e1603cc50983c1309f31235708dfdd59. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBEYQ2457618.
B:3 Musical Sketch in B flat (No. 1 from Two Musical Sketches)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92e0e8b7c531777705fcebb5c48bd485ec54b8aa3ace074194b422bd466f32ed. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBEYQ2457619.
B:4 Prelude No. 9 (from 12 or 13 Preludes for Piano Solo, Set One)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d0da69ac12eb1a52ce50830b8388585650e9647103c51bddfb170901afc3e07. 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/GBEYQ2457620.
B:10 Mazurka in F minor (No. 3 from Trois morceaux, Op. 57)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dec228e324f6bd909729e5147a8d02e61bb7bd0ae1f530279f934e6843e2190. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBEYQ2457626.
B:13 Romance (No. 1 from Soirées à Saint-Petersbourg, Op. 44)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x826a0e9cb1ef6c0df96ed5690a6aafcbc1d6b338b35fada4651c9da176254db7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBEYQ2457629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a7e7cca8bceabb3b52836111bd7dc494441889bbb9c5fd53dd1b707542d667. 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/GBEYQ2457633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46925d586097a514b238d3856c0f396400504989f00a5085611ba16507d724ef. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBEYQ2457634.
C:3 Allegretto (No. 1 from Three Fantastic Dances, Op. 5)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4db0ba55eab138beb263129d4c61ca9c723be6bb93f8c280df0b35600f3645c. 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/GBEYQ2457635.
C:6 Tribute to Roberto Garcia Morillo (No. 6 from 12 American Preludes, Op. 12)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f6e4bd81af32bae29318f9e79d36a908dddbcaf6c627d3cad144ec3b3451c40. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBEYQ2457638.
C:8 Chanson du chasseur (No. 4 from L'Almanach aux images)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9369d688c649037c9eefd64a38cb68595c40ef8337fc0bae17deb8552b516fcb. 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/GBEYQ2457640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b67848cd3d64cee2577d6d71bfb142c8136e9a1418d56b14f6c0f75fdf4b60a. 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/GBEYQ2457641.
C:10 Smoke Gets in Your Eyes (from Roberta)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac695e7fdefe82ad6eef1c13cf1be0805c63e08011cdd2212c060382fd41d9fa. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/GBEYQ2457642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3e6ce852448619fd18937453a1907ca2193371cb7a5cc6960c4c767bb759471. 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/GBEYQ2457645.
Violin Exam Pieces 2020-2023, ABRSM Grade 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf5449be44bf90d21708be6fa8079a913d7d84404d1be7be6943ed0eb5c01020. 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/GBEYQ1627001.
Die Zauberflöte - Arr. for Piano by Christopher Norton
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf340315a1d200257e6a3d97dbf13e0e8620ebb31f74d1486345cb40e829ded2c. 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/GBEYQ1627002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa753e453f7067dec96e9e408adb0b8d52992743825c6777b7318ed67664e56. 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/GBEYQ1627005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e42fd22d7fa0c20081910822f41831b29991ea4440cf96d7d74cd7da456b5dc. 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/GBEYQ1627008.
The Planets - Arr. for Piano by Quintus Benziger
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81c91b350a5a078070f6a7634de02ccabbd6e914661dda4c7feef055ece93005. 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/GBEYQ1627012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6b86c68a2ef80406233a65cb57b04bcdfb2b0133673751b146d391db484d9e6. 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/GBEYQ1627017.
Piano Exam Pieces 2021 & 2022, ABRSM Grade 3
Innocence (No. 5 from 25 études faciles et progressives, Op. 100)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f4c87ccf0509e1d896a73baa78e0216a9b7cf3c5b4470b5c6831fbed2d6a2c9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBEYQ2029302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d9228057f51e5231eab10483c8cc454b1ad4f0fc13c8e05531463e6f64b9f2a. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBEYQ2029311.
Anastasia (from It’s a Piano Thing, Book 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9ba080c349a29f6be512fd37f54191e73a42c2fd4f2e4477818922b516e50ac. 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/GBEYQ2029313.
Scary Stuff (from Razzamajazz Repertoire Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x017ef9e7afc0d79acedc0a7559816ed8ef6c756833ebeb3a62ce50ce75766fb0. 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/GBEYQ2029323.
The Waltz of the Elephants (from Clever Cat Goes on Safari)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8efa7d9f605059ed43830a4ccadc958dcb147e474e92791bdd31e37d600c0d3a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBEYQ2029326.
Guitar Exam Pieces from 2019, ABRSM Grade 5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c540b180b9bd6ff3a4a40675533af568f7a5d1f49bb9bbfcb2a1a5e53bc765a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBEYQ1825801.
Suite - Arr. for Solo Guitar by Karl Scheit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94842eed67578cec9b8e8e78be73d750ea92a13f50ebc2063315f76de509f196. 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/GBEYQ1854610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63033758014ae749d1f2ae6da59c408ae2e47b923f29a780670aff139103bc78. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBEYQ1854614.
Guitar Exam Pieces from 2019, ABRSM Grade 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76ffb807fb907cbaa9c929e49bcd2aad675a92405ff9ec1188f8170906757f42. 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/GBEYQ1823422.
The Sound of Music - Arr. by Peter Batchelar and Richard Wright
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3b3534125ac9d3085082bd657104f7de06c27181d310b27939f01423900df3. 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/GBEYQ1823427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee74daf57ebd3925a73efdd656f8f2a810e3e02a9e3198f1b0a413b54dd07960. 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/GBEYQ1823402.
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
The Wizard of Oz - Accompaniment, Arr. by Harold Arlen, Peter Batchelar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa296bc4e1fa5f322c9ed7a0ecbddb5f575354ec30e7866f10462a992918daa64. 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/GBEYQ1823437.
Piano Exam Pieces 2015 & 2016, ABRSM Grade 3
Guitar Exam Pieces from 2019, ABRSM Grade 7
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e3b0f366a330638afd66e64bef21a923921c84648363e9ad6f9b81067302a7. 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/GBEYQ1865709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98f84fe9337b0924af8c76213986746040aebbbe648144704c4e3898b6d7acf4. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBEYQ1865715.
Guitar Exam Pieces from 2019, ABRSM Grade 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b0947c8a2d430b83cf4fd4b7edd02eebeed53a0d4bfad6b3ab3a7b6492ab34. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBEYQ1824121.
Guitar Exam Pieces from 2019, ABRSM Grade 6
Guitar Exam Pieces from 2019, ABRSM Grade 2
Guitar Exam Pieces from 2019, ABRSM Grade 8
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Guitar Exam Pieces from 2019, ABRSM Grade 1
Violin Exam Pieces 2020-2023, ABRSM Grade 8
Piano Exam Pieces 2025 & 2026, ABRSM Grade 5
A:1 La tarantelle (No. 20 from 25 études faciles et progressives, Op. 100)
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A:2 Spiritoso (1st movt from Sonatina in C, Op. 36 No. 3)
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A:3 Hook's Hornpipe (from Piano Tales for Peter Pan)
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A:6 Gavotte (No. 5 from Album des enfants, Op. 123)
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A:7 Andante (from Pièces de clavecin, Op. 1)
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A:8 Ringeltanz (Boys' Merry-go-round) (No. 2 from Children’s Christmas, Op. 36)
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A:9 Allegro (1st movt from Sonata in G, Hob. XVI:G1)
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A:13 Allegro con spirito (1st movt from Sonatina in C, Op. 55 No. 3)
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A:15 Theme, Var. 1 and Var. 5 (from 12 Variations on "Ah vous dirai-je, maman", K. 265)
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B:2 Foggy Blues (from Naoko Ikeda: The Graded Collection)
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B:11 Mélodie (No. 5 from 10 Pièces de genre, Op. 10)
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B:12 La barca (from Impresiones Õntimas)
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C:1 The Village in May (from My Neighbor Totoro)
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C:2 Jackson Street Blues (from Jazz, Rags & Blues, Book 4)
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C:3 La pluie et l'arc-en-ciel (No. 8 from Musiques d'enfants, Op. 65)
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C:14 March, Little Soldier! (No. 3 from Scenas infantis)
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C:15 Love Theme (from Lyric Moments, Book 2)
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Piano Exam Pieces 2025 & 2026, ABRSM Grade 3
A:1 Allegro moderato (1st movt from Sonatina in G, Op. 300 No. 93)
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A:2 Allegro in F (from London Sketchbook, K. 15a)
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A:3 Tarantella Twist (from Piano Grades Are Go!, Grades 2–3)
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A:4 Allegro moderato (No. 3 from Fem smärre tonbilder, Op. 7)
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A:11 Moody Gigue (from Piano Sketches, Book 1)
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A:15 Jazz Etudiette (from Easy Dances II)
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B:2 Douce amis (from Album pour les tout-petits, Op. 103)
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B:14 Chanson italienne (No. 15 from Album pour enfants (Album for the Young), Op. 39)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc645272e0c02bd40229fef208d6fa7b111e2a5c7b4ce0c8af8c190d04943ebdf. 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/GBEYQ2453830.
C:1 Allegretto (No. 3 from For Children, Vol. 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2853d64e3106e9a672db5ab437317538d03071a34bf56e8332f618b1f8764faa. 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/GBEYQ2453833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabdce42e1e0d988f6018b7d6f1c1f0374e4d010790b8423161ed28ee2f01f821. 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/GBEYQ2453834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x270144e506724cff13807fd6a9e04cdb59e83b56651f60d97f6b875e7cb5f620. 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/GBEYQ2453835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54fe2c5db36aa3bedb7df318203d49667c8de5caa1dca23650d96f9434133fbd. 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/GBEYQ2453836.
C:6 Ella Scats the Little Lamb (No. 1 from Portraits in Jazz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeaa491d06f31387b3b0e0dfa7e604a43cf15662e5b7d0f954c585baa06f3924. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/GBEYQ2453838.
C:10 Waldvöglein (No. 15 from Skizzen, Op. 77)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x551abcdb6e8117a166f944af05fa4cdfc4a084db3a33a9691a47cdb9a06d5eaa. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-21T16:59:33Z), 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/GBEYQ2453842.
C:11 Can You Feel the Love Tonight? (from The Lion King)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe13212c800fd7b7b7a9be5f6bef8f4e37afefbbb39ec32ef3c7d4a49d365c791. 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/GBEYQ2453843.
C:12 Moon River (from Breakfast at Tiffany's)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5237f52f582d97da78261a1a56de81efaebf01fc149b686c13d027588a6af142. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBEYQ2453844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40fbf87bda0b31a9e55707992e3302d8510829605161535a70872661aa6b1808. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBEYQ2453845.
C:16 Groovin' Grasshopper (from Adventures and Accolades)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d5a1125ce1abb25b198debc47c27fd47d90cf96495bbd2edfd3929abacfa064. Chain 2 (Bitcoin): anchored in block 957025 (2026-07-21T17:25:16Z), 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/GBEYQ2453848.
Cello Exam Pieces 2020-2023, ABRSM Grade 5
Zehn Originalstücke, Op. 116: IX, Legende
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x621772011330ed47ee78bd5aed1393a33f1cd5692a54327f96407f08c9342c93. 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/GBEYQ1904005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94bff68bdcd5a59cca033291f185ba60b7e18bb2b4758addc2cdef3b7df69a52. 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/GBEYQ1904004.
Cello Exam Pieces 2020-2023, ABRSM Grade 1
Cello Exam Pieces 2020-2023, ABRSM Grade 2
Clarinet Exam Pieces from 2022, ABRSM Grade 3
A:1 Il mio tesoro (from Don Giovanni, K. 527) (accompaniment)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef1d9170455f443a2e0b87cb66d1719f7ccffef20940c02ef1313de639fbf85d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBEYQ2170510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7272d3f8fe99191ae0f455c133111bb972c043001fcadde1c7e7a882a1beccd. 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/GBEYQ2170502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c31a619a31c6f46cb1bd1ff6452cffee8ff89b12a1980c0a68c4d1ad67c77df. 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/GBEYQ2170512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf0ed146dd0c57099da4740ded2e55bba9821ff41edb74a33f593168e7d0639b. 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/GBEYQ2170504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc49261f11dd9f1de0f5ea29094565f1bdb416a39b367698df38f302a43ecd67. 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/GBEYQ2170505.
B:3 Venetianisches Gondellied (No. 6 from Lieder ohne worte, Op. 19b)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe39554bc6aec6d1649e1ea0142adece2ecb3fcc8dc6fa437c723b9936c167d4f. 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/GBEYQ2170506.
C:2 Cha-Cha Chart (from The Quintessential Clarinet, Vol. 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85dd4f7fadc6b647f40d9f194707374782d3b6149566a2cdb0591b9c6576164e. 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/GBEYQ2170508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd185c52ccafb9d492de782a2e63f64d3c59ec477b14fa0f623d5b0cd1911a480. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBEYQ0376401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a5b5b825ba8f28e26bca20926f2be41ff45cc0be276a98f42ff1c234b014a7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBEYQ0376423.
Flute Exam Pieces from 2026, ABRSM Grade 5