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 0xb11ebd01c93d54d5977b5285a943c22f807e9533fbcf0389325f3a546abd113b. 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/8d0e0146-0c2a-48a9-a97d-4349b931ab1b.json and https://artists.proofprofile.net/proofs/artist/8d0e0146-0c2a-48a9-a97d-4349b931ab1b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Johann Strauss Viennese Waltzes And Polkas - Wiener Walzer Und Polkas
Geschichten Aus Dem Wienerwald, Op.325 (Tales From The Vienna Wood, Waltz / Légendes De La Forêt Viennoise / Valse Strorielle Del Bosco Viennese / Valze Cuentos Del Bosque Vienés, Vals)
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 0x899f2667a1f453472930a55420d923db8716b72c26359fd87b725b09682fc76c. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:43:18Z), 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/DEE379200240.
Kaiserwalzer, Op.437 (Emperor Waltz / Valse De L´Empereur / Valzer Dell´ Imperatore / Vals Del Emperador)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb690ff6371f04d38a7abfede684148fc92d2ae7e4f90618747815e506a3e23e5. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/DEE379200250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c447dc0d6b8479fa54035d520ed263ea4a700cb7ffe33b5396fafd3600ffef2. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEE379200320.
Wein, Weib Und Gesang, Walzer Op.333 (Wine, Woman And Song, Waltz Op.333 / Aimer, Boire Et Chanter, Valse Op.333 / Vino, Donna E Canto, Valzer Op.333 / Vino, Mujeres Y Canciones, Vals Op.333)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a6070d0f2ec75fed53cd360ced449b6a35aff55fecdc9a867ecc5ef367e709. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/DEE379200400.
Wiener Blut, Walzer Op.354 (Vienna Blood, Waltz Op.354 / Sang Viennoise, Valse Op.354)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd927862bbb1aa1db670f61cbb0a3eb2b9a798112b0272684654401954f04d011. 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/DEE379200410.
Radetzky-Marschpolka, Op.228 (Radetzky March / Radetzky Marcia / Marcha Radetzky)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5451164b65cfa5f59ee109cb6f4a0cc8c65ac198e43af74b1c727230ed82e092. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DEE378201260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x330034446604aa133755ea7d6c1e7b38fae4179e34493c706afb49a9b2bfdc5f. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:36:45Z), 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/DEE378201270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x645a08093d4db6394e8598f4600a6420131c13822787beadecb4505a33c4e8db. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:19:01Z), 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/DEE378800040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5319871c2623551b89b9754aba3324eb96cc58f221102894cd1404359b9132e3. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/DEE378800070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc37907c606bae5b09262a32e86004b612da441c3605162c42d7f5aead55e03b9. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DEE379400430.
Eine Kleine Nachtmusik - Serenade G-Dur KV 525-Allegro - A Little Night Music - Serenade No.13 For Strings In G Major K 525-Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560c9ece2eff21148375055048e2becc03cf1c24f78121fec0061a6e6b9079f1. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE379200220.
Piano Concerto No.1 B Minor - 1.Movement
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d35eec6ac96e34b5c963cb6ff51a2cee000de63d035843a2af955d96b9dcede. 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/DEE378800220.
Walzer B-Moll - Waltz B-Minor (Symphony No.8)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdbed8a92597f675aa5d4eccf808f5028dffb3b751cbfed3a6cfbaa679b72887. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:31:31Z), 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/DEE379200390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb84a7a24ad10992ab98df3485f36312fdfa13bd89a5e13646c815d3e0749d7cd. Chain 2 (Bitcoin): anchored in block 958635 (2026-07-19T00:58:42Z), 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/DEE379200260.
Die Wut Über Den Verlorenen Groschen (Rondo Alla Ingharese Quasi Un Capriccio Op.129)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa76c597213a66ffa26a6ad3b59dccb45c607e615ac34b607a6ba8dd4e7dd484. 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/DEE378800090.
Auf Den Flügeln Des Gesanges Op.34 Nr.2 On Wings Of Song (Song For Voice & Piano Op.34/2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfda6743fd2db4b9f9d19e8d9314d24ffcee102be6d14a973c5ec1bd4ca14c45e. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE379200190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e6ce54cad213b8f79c0b5f6fb60cd9bffc21efb278379804d57bae562484dcc. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/DEE378200340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x014fc4a32bf6ef2e40cae5c2d8812009d4e13a600be3f65189ecce2aa86b52e5. 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/DEE379400330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae377d11b44e9e45da0a3e918d2345dc8a40f5ec0342baaa5040871ed54dd641. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/DEE378300160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c10ca8d96e9b602f71188dd0fd3bd71922906df9a62cb06224d8dd79c6b0b2. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:33:22Z), 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/DEE379400350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x123ebe315ff083663f4527b27791b841198203877480684db77978a85e5a5568. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/DEE379200620.
Panpipe Christmas (German Christmas Carols)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd02c9c6aaa3bf705b4a95920b74bf981c3100ba876c37a39c18f8649bb7733db. 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/DEE378900350.