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 0xd624534e64206cbc02c6c9ac912342a7d1c70f8e400c1dc0845ec4f657e79506. Chain 2 (Bitcoin): anchored in block 953630 (2026-06-14T12:06:27Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2f0ae262-b7bd-41f9-90aa-f05aaca2f147.json and https://artists.proofprofile.net/proofs/artist/2f0ae262-b7bd-41f9-90aa-f05aaca2f147.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Je n'aime pas Verdi, mais ça j'aime bien !
La Traviata: Act I: Libiamo ne' lieti calici
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 0x0e81cb54f00b88366ae833c95dc25b73a5bead7ce96c636fb7a2dcfb4c7bce8d. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/USBC16700137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f03a5ded15cd76a67837f3bfca38afe4f87a2544323a437459bbfc6fb28768. 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/USBC10000840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc704d04341e6d263d3f574c3a2323f8df3f833dd8a78e23bcc990610933bf76e. 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/USBC17100146.
La Traviata: Act II: Noi siamo zingarelle
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5aadce8cab8242b8638a222711299d3d0d8554fece4c00ebf93c74cc7d8a297. 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/USBC16700114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9afa62af249816beb99ca511064dd6aabf8f6eb87b72a06465792848446bd458. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/USBC17000265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc97140f640d81480e23dda2a12385b8826211302c1f63b822fbaaeadf0b38fe. 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/USBC16700135.
Rigoletto: Act I: Gualtier Maldè... Caro nome
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c60c2dfdfd53aa3f2bf33915fcc888d87acc5450c8b566d40a98d11e0443a3. 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/DEE478400124.
Rigoletto: Act III: Sì, vendetta, tremenda vendetta
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e9459b6fb52607c414951cf87bab8ef4895605e32217e788fc24ab1666c9bf2. 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/USBC16300227.
La Forza del Destino: Act II: Scene 3: La Vergine degli angeli
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d79c46651aa00976449f7d89a2d387765e4670062c31bfe0019284a8f4c9387. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/USBC19704074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f54bc881a343b3fb8f9fe148eee865622245493acda1f816edd11028d54050. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/GBARU9900257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d804845c911c9a5ff5e1119ceed4eb32e739013b1c0bd498baf2991de1a4f3. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/FRV627400760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3432464fcdb77f1d41e9a459d2d6d7af637576aaea1e75c62346760f85fd3df7. 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/FRV627400780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb463f01988644dbf556113dc3dd4fa499d54e19193b3cae84c7dfe5e4233f6f2. 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/FRV627800630.
Swan Lake, Act II, Op. 20, TH 12: No. 13, Dances of the Swans, Pt 4. Allegro moderato "Dance of the Little Swans"
Kirov Opera and Ballet Theatre Symphony Orchestra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a1457263a56a74aebf820df5c61556548d235b87c5a31861b5e9221cd9c326. 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/FR3KD1505010.
Swan Lake, Act II, Op. 20, TH 12: No. 10, Moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee21cac0c906ad028e7265484756d5db9c917ea5ab69bf17e54d082b47bd078. 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/FR3KD1505007.
Swan Lake, Act I, Op. 20, TH 12: No. 2, Waltz. Tempo di valse
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed194c627e2b406ab9f34250596065ef9644e7a1e8d4eb3d2922c3906c45ad48. 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/FR3KD1505008.
Piano Sonata No. 11 in A Major, K. 331: III. Alla turca
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7bb46e735db895a021fde7e9620b1be9e601627226d7b0ad354e14f6391bbc5. 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/FR59R1509549.
Goldberg-Variationen, BWV 988: Variation No. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6313a99afe070987ba66409eab3015c9c1760e8fea9bc42bd29371051554100f. 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/FR3KD1504915.
Piano Sonata No. 3, Op. 2 No. 3: III. Scherzo. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4719228cc62377f303ec8b67059b7470c76d58b6d76fecc47fb73698a7f8f5. 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/FR3KD1505091.
Piano Sonata No. 14, Op. 27 No. 2 "Moonlight": II. Allegretto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb17f6d5c898dd6aabb465845bac44036faa534faf6fac62393b4e2d5b7e9aa7. 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/FR3KD1505094.
Octet in F Major, Op. 166, D. 803: IV. Andante - Un poco più mosso - Più lento
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2baa8c91455003bddf86a6c2c99ef0f9fe8c91100cb042022aa3391ae6b9ad5. 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/FR10S1529101.
2011 Midwest Clinic: Kunitachi College of Music Blasorchester
Kunitachi College of Music Blasorchester
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c73c50c7a20e922fd485795f486921f3889e900dc56efece7217966d983a479. 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/USVZX1202211.
Tomasi :Trombone & Trumpet concertos pour trombone et trompette - Noces de cendres
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x447f295c661161e5130e7f45fdb580ede1b950683310597cac047066d76e0bea. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/FRZ051500003.
Orchestre D'Harmonie De La Garde Républicaine
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaa74cb6c54226e2099226368ee2dd54fe6ad14531e11e385d9419f51d5fc446. 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/FRZ051500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x662885544ee2019fae3041d9abfa794e3298bb184bd601e0f58075d29916bad1. 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/FRZ051500011.
The Christmas Album: La trompette de Noël
リムスキー=コルサコフ：交響組曲「シェエラザード」(全曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf59b0faf06fe566f3afd48e83b34e5f85ed101828b1ec5ae1cd0f9df95e0444f. 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/FR10S1749894.
Berlioz: Symphonie funèbre et triomphale
Orchestre À Cordes De La Garde Républicaine
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd18c3895a6741f7755cf536812394dbd23fd29bdb810b7ab6c4ca9fa7175ea49. 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/FR3KD1507123.
Clarinet Sonata: II. Andantino - Vivace a leggerio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff3fcad7fc186e69b58e2ea5fa8bb10079e66e0d06f04d4bb24f33f3deec808f. 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/FR3KD1507129.
Concerto for Trumpet in C Minor, Op. 42: I. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x734777e49fad84cf1cb10ff03bb6d46547e4365094ec7262b1be0eb42bcef4d2. 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/FR3KD1507173.
Trumpet and Orchestra Concerto in A-Flat Major: I. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f139635ac34df403531ee55f1c3382225ca4f2e950741bb9ebc38d1cefdc38. 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/FR3KD1507179.
Concerto for Trumpet and Symphonic Orchestra: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6537d845e883c8703e6fd3be85079055d1ff0c95bbedde7ede2a2472796c645. 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/FR3KD1507184.
Digginsack Beat Battle Compilation Vol. 3
Stéphane Gourvat: Études françaises pour trompettes
Piano Duo - Clementi, W. F. Bach, Mozart, Poulenc