1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71fdbc5a47e0a30a2ff7353f186bed55b0eb8365900b1aaddf21414ae8df3092. 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/639ad601-770a-47c0-b9ea-6bb28561b424.json and https://artists.proofprofile.net/proofs/artist/639ad601-770a-47c0-b9ea-6bb28561b424.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Ballet Music - Burgmuller, Tchaikovsky, Minkus, Paulli, Hertel, & Asafiev
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa97ed004ab517d57e97aba70c689f3caa199958a3c4d36a762e017838ab93ec3. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB260200085 — a six-check JSON result.
Giselle: Peasant pas de deux (arr. March): Act I: Allegretto: Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e140901839fceddd4afc355b10cb4f165ceeced4886982aa950a105dd4e8ef. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB260200077 — a six-check JSON result.
Giselle: Peasant pas de deux (arr. March): Act I: Allegretto: First Men's Variation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a48aa980b1092dbb4062d1a38ae71db62c7958805f9a0700bf0104bfe5ad8a4. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB260200078 — a six-check JSON result.
Giselle: Peasant pas de deux (arr. March): Act I: Allegretto: Women's Variation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340eeb0324f4c60bc92fc9d2b3ef10496227590bedcad16296af7aae587faeaf. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB260200079 — a six-check JSON result.
Giselle: Peasant pas de deux (arr. March): Act I: Alegretto: Second Men's Variation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca65c4bdcf98ebf53722947dbc041b40b24b46402fc2821aef82d614d25a3f5. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB260200080 — a six-check JSON result.
Giselle: Peasant pas de deux (arr. March): Act I: Coda
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa652e732b7b5950c0c6966f821a610470932d565d92e7b09edffe2219e2b4070. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB260200081 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ae357c444ffa86d02409ff2c7375daa789792fc587d46d474b54f37a4e4a00b. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB260200082 — a six-check JSON result.
Schwanensee, Op. 20: Act III: Andantino: Men's Variation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bda88d70615f1fb031bd23a50b361c6c0cfcf583b38c49f1f33fd7a275f5f5b. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB260200083 — a six-check JSON result.
Schwanensee, Op. 20: Act III: Allegro moderato: Women's Variation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63d8a95f3422ba94941c158874c8ca03f58335f048756c563cff35e8914b4823. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB260200084 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa97ed004ab517d57e97aba70c689f3caa199958a3c4d36a762e017838ab93ec3. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB260200085 — a six-check JSON result.
Le Corsaire: Pas de deux (arr. J. Lanchberry): I. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c9d27416564adbe529a0b6d697cdde4b0358be0b3764623d03316e261ecdd6. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB260200086 — a six-check JSON result.
Le Corsaire: Pas de deux (arr. J. Lanchberry): II. Allegro: Tempo di Valse: Men's Variation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x699c154c1c1af98d7a310f19c3850b3e0093028ce551806c22626a86e0200653. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB260200087 — a six-check JSON result.
Le Corsaire: Pas de deux (arr. J. Lanchberry): III. Moderato: Women's Variation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b55b6f45324a79bc258c63391d9834a814810578597e127de3abdaac7b95acb. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB260200088 — a six-check JSON result.
Le Corsaire: Pas de deux (arr. J. Lanchberry): IV. Coda
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42e0c2360be46e46edf8463475dd81fb855f780c1dfbec587bb4888fd577a2b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB260200089 — a six-check JSON result.
Flower Festival in Genzano: Pas de deux (arr. for March)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc66c62bea11fe574be8d8962f2119a49823544a09b43e4082f359cd40af1eec0. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB260200090 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c271eb1310a8b5db415fa365012db67169415b2c3b06d8ca6ddd0111ac72b35. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB260200091 — a six-check JSON result.
Giselle: Act II: Andante: Men's Variation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f3f7ed804c70104d17d6213e5c9628e49b2a5ff6cda9644cc5252cf1f4135e. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB260200092 — a six-check JSON result.
Giselle: Act II: Andante: Valse moderato: Women's Variation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe54d4f8b96e1e70d3f4983f08b7004c0ba01577ec0d5871023a9f5c0e3ef5b7f. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB260200093 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0906634115c3fb3ec00a3ca498577c814eb996ec34b7a31035fff80b48ec362. Chain 2 (Bitcoin): anchored in block 960173 (2026-07-30T00:11:40Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB260200094 — a six-check JSON result.
La Fille Mal Gardee: Pas de (arr. March): Act II: Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8267b93993eb54100f6f3f023af6caeb70116ddeaf2f949110b7b842e23dbd94. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB260200095 — a six-check JSON result.
La Fille Mal Gardee: Pas de (arr. March): Act II: Tempo di valse: Men's Variation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f485e97b0b796e7cf9e699f9bcfd25fe66c0f8e370a56e028d91a52f83107a8. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB260200096 — a six-check JSON result.
La Fille Mal Gardee: Pas de (arr. March): Act II: Moderato: Women's variation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df1fd7e0eede4ea3585a41e0920445a64103e9c08a10e76f9b5fd2876d9211e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB260200097 — a six-check JSON result.
La Fille Mal Gardee: Pas de (arr. March): Act II: Allegro moderato: Coda
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c24beb722cee9da845edd27c86c24b9a517a1347ca53aa8380996ad17fbd34. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB260200098 — a six-check JSON result.
Die Flamme von Paris (Flames of Paris) (arr. March): Act IV: Allegretto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33dcf8ffed48857b131e14867b7d2581b784cea478a890a635d690035911bae3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB260200099 — a six-check JSON result.
Die Flamme von Paris (Flames of Paris) (arr. March): Act IV: Moderato: Men's Variation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b11177ce93c206bcf869e18b907dc01bac3eb20ee9c418cb79c0bab9bc594c3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB260200100 — a six-check JSON result.
Die Flamme von Paris (Flames of Paris) (arr. March): Act IV: Allegretto: Women's Variation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f94fd89ed4f9dc0d84bea577ffa1ca7549ef68f5311971f85eb66e3addb362. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB260200101 — a six-check JSON result.
Die Flamme von Paris (Flames of Paris) (arr. March): Act IV: Coda
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff9fc6944b0b2d2516298ef092518b8a34770a415845b0adb35c5876ab1eb561. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB260200102 — a six-check JSON result.
The Nutcracker, Op. 71, Act II, Scene III: 13. Waltz of the flowers
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74372077dab28f9e1678a3eefa45c94e489b0a4f76ac6385549647e3ca2e8b89. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DER411390337 — a six-check JSON result.
The Nutcracker, Op. 71a: No. 12b Character Dances - Coffee (Arabian Dance)
Classical Music for Learning: Great Masterpieces to Improve Studying and Mental Focus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7602b7cc9d3b504fa9d604750a9c968fe92d0f0705b2366b66f0fc0e214d3887. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US5541301590 — a six-check JSON result.