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 0x1da5a611c515ad514887d21b0c972048f6f6203cb40375f4d39094885a23897d. Chain 2 (Bitcoin): anchored in block 954035 (2026-06-17T02:39:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3b9f7a5c-0056-40e7-a7bb-ea82da8d6c4e.json and https://artists.proofprofile.net/proofs/artist/3b9f7a5c-0056-40e7-a7bb-ea82da8d6c4e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bach: 4-Part Chorales for Piano, Vol. 1 BWV 253-262
Ach bleib bei uns, Herr Jesu Christ, BWV 253 (Arr. for Piano by Jon Magnusson)
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 0x221fa6914383b81b3779af9be8399cfd1df4cb908b00609680f1044ccfaacad8. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/AUGBT2434068.
Ach Gott, erhör mein Seufzen, BWV 254 (Arr. for Piano by Jon Magnusson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d78630cd4ac4c3a2d64793f112dddad78c86c3596ef055388d3ba55ab5f966. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/AUGBT2434069.
Ach Gott und Herr, BWV 255 (Arr. for Piano by Jon Magnusson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46742b3b2b6bc0026edaa1d6e861120f47a0804c74d29f510d017530890c3fe9. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/AUGBT2434071.
Ach lieben Christen, seid getrost, BWV 256 (Arr. for Piano by Jon Magnusson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29ffc8760665153c995f42e7e1aca007ddb63e27483312de4cc48d48eaff60ff. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/AUGBT2434073.
Wär Gott nicht mit uns diese Zeit, BWV 257 (Arr. for Piano by Jon Magnusson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9435e00733202318c0cd784be2bb677a8080e85cbb4d1ccac9037c424a5bf44a. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/AUGBT2434075.
Wo Gott der Herr nicht bei uns hält, BWV 258 (Arr. for Piano by Jon Magnusson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c7614c26d830294a0bcde7c684ac7f1f8b77abd5c26884c5d6bb894cd1cc91. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUGBT2434076.
Ach, was soll ich Sünder machen, BWV 259 (Arr. for Piano by Jon Magnusson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e0a44bd825dc26508ab2f699adfd00ec735c6745572c98a9232494f2401696f. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUGBT2434077.
Allein Gott in der Höh sei Ehr, BWV 260 (Arr. for Piano by Jon Magnusson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x505e665fb9de04c738e7bd0b3f1ecedc761242e89a6c37aa026125f3628f81df. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/AUGBT2434078.
Allein zu dir, Herr Jesu Christ, BWV 261 (Arr. for Piano by Jon Magnusson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd73c602dbdb765d9692410eed0e000e2eee297533a2f351db79ae74289e4f98d. 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/AUGBT2434079.
Alle Menschen müssen sterben, BWV 262 (Arr. for Piano by Jon Magnusson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x069267249d31b2ff21d41ff133e7f229e0c0906f7fb3c034eabb1ef5f400e67b. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/AUGBT2434080.
Schumann – Album für die Jugend - Album For The Young Part 3
Schumann – Album für die Jugend - Album For The Young Part 2
Schumann - Album für die Jugend - Album for the Young Pt. 1
Album für die Jugend, Op. 68 No. 1, Melodie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcb4d26a88bb196b44043030c0cd2754558e3db5a58b9fbfa18126b4537fdaaf. 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/SE6N62201120.
Kinderszenen, Op. 15: No. 10, Fast zu ernst
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b9b5ab6e880744f83c04784fdd15bcd230bf2fe3e68a29c492ed5039d11f12. 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/AUMEV2294719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ef8ab5fe06185f929bc25c84c43b0f2f82f8d8e606795b2100dd4f68ffb4f5. 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/SE6N62200862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x178277a6be3db236e8b68a24bbdb09d3e0c38c41b169160e6838e28e37759f7e. 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/SE6N62200863.
Kinderszenen, Op. 15: No. 1, Von fremden Ländern und Menschen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f047b47ada15c027a0a38a0037de4ab45c188caad1f959072a627e53af4319. 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/SE6N62200752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2134a4950ee3796b4635d31366d57edf28de2087c8981636125289c2965a7ad. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/AUMEV2260603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e6f832ad004efcbddc5c5488c02e00d48697d8dcd8205231e8c705fcdb1effe. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUMEV2244860.