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 0x2593121904d3a78706add992d81f6241e0301f88966ca4330af813b946dec96d. Chain 2 (Bitcoin): anchored in block 953596 (2026-06-14T06:21:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/088c5211-f80f-4f28-8809-f30ad8266852.json and https://artists.proofprofile.net/proofs/artist/088c5211-f80f-4f28-8809-f30ad8266852.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Sonata No. 1 in B-Flat Major, RV 47, Op. 14: I. Largo
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 0xc935b260fce2173e8f0cb2316eecc6363984991f72705eff362ae037f79a8ccb. 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/NLN580588961 — a six-check JSON result.
Sonata No. 1 in B-Flat Major, RV 47, Op. 14: II. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc8f73af337f45364f99145dead04463eea8d8abc570222b9016914a3cb9f78. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/NLN580588962 — a six-check JSON result.
Sonata No. 1 in B-Flat Major, RV 47, Op. 14: III. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e251c7f4790a1115867cf97d434e57b37e9a2671320c9a24d925bac26e857f. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLN580588963 — a six-check JSON result.
Sonata No. 1 in B-Flat Major, RV 47, Op. 14: IV. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5b1828774e0772c9de08e4978b169fb9e8555cbdb8ce8ef894edc13080d3fd2. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLN580588964 — a six-check JSON result.
Sonata No. 2 in F Major, RV 41, Op. 14: I. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79a4e4a8fe6e6265f13ab2055a723252a7c0ff4a1a622d13a7d4c19964b6ccec. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLN580588965 — a six-check JSON result.
Sonata No. 2 in F Major, RV 41, Op. 14: II. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c4190732fb267715cc5dcf08142eeb1f84db5ba63192a01b131f7a387d0e0f. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLN580588966 — a six-check JSON result.
Sonata No. 2 in F Major, RV 41, Op. 14: III. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6235e772e4b3068d017c092ca031b7e8a4408441bd057fabbdcc37fecfeac9a. 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/NLN580588967 — a six-check JSON result.
Sonata No. 2 in F Major, RV 41, Op. 14: IV. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7315f31b01f36f00e4c4a943b822170c3557775215c1efaa68f8b045b9d3b00a. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLN580588968 — a six-check JSON result.
Sonata No. 3 in A Minor, RV 43, Op. 14: I. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7212d77a9d6884845160e6463b89d94881da2a564086e9142f111ca32cb9d77c. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/NLN580588969 — a six-check JSON result.
Sonata No. 3 in A Minor, RV 43, Op. 14: II. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa61640799e575031cd128a315f196834076244701e42d34267a98e364c6d14. 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/NLN580588970 — a six-check JSON result.
Sonata No. 3 in A Minor, RV 43, Op. 14: III. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84166f552b4a27c64d7e3502cd27af5acc6414ea7cc26afc4c40472f51ae5744. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/NLN580588971 — a six-check JSON result.
Sonata No. 3 in A Minor, RV 43, Op. 14: IV. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c74a1c8a4b8c3d5196163cd92103fc50e626b30531ed5c382acc08eee4f774e. 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/NLN580588972 — a six-check JSON result.
Sonata No. 4 in B-Flat Major, RV 45, Op. 14: I. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d226951f54419b2aa706678868621823fd5efd25fe090b87ecaddc29e017056. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLN580588973 — a six-check JSON result.
Sonata No. 4 in B-Flat Major, RV 45, Op. 14: II. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd81cf194377e1b8701ec13b259d84eca3f597a4fa98e2108a4c60a379d64278c. Chain 2 (Bitcoin): anchored in block 957025 (2026-07-07T10:59:31Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLN580588974 — a six-check JSON result.
Sonata No. 4 in B-Flat Major, RV 45, Op. 14: III. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc2c268554e3b5768e742456cd47ca71382feb7860e8d505c1c310feb1d75d08. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/NLN580588975 — a six-check JSON result.
Sonata No. 4 in B-Flat Major, RV 45, Op. 14: IV. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf16ab209ad8871fff4af2d4494626cefbf13219a93582fc31a22775c81cceb1c. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLN580588976 — a six-check JSON result.
Sonata No. 5 in E Minor, RV 40, Op. 14: I. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd19ffd636d6b6889b2629c81ddf1159bb3da1088ab9b70098d69838af70fa4. 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/NLN580588977 — a six-check JSON result.
Sonata No. 5 in E Minor, RV 40, Op. 14: II. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66cc7f6643b669545ca6f77ea46bf2735d799941373a90dc505fb2bb8fae1158. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLN580588978 — a six-check JSON result.
Sonata No. 5 in E Minor, RV 40, Op. 14: III. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95877c6909da4831512c2fb7b6b3df7edcb273d09c6194acdddf0b69bf8ea779. 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/NLN580588979 — a six-check JSON result.
Sonata No. 5 in E Minor, RV 40, Op. 14: IV. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2565605ef312d7dc90f91e09f83da70adfc2af397c2c36f73049121fe668606d. 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/NLN580588980 — a six-check JSON result.
Sonata No. 6 in B-Flat Major, RV 46, Op. 14: I. Preludio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa22a7341163cd82a48b05ed094a62b32c140a0ea431536ae47c43316a33fa1a8. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLN580588981 — a six-check JSON result.
Sonata No. 6 in B-Flat Major, RV 46, Op. 14: II. Allemanda
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe976b3532dbb987ff0bdd063f930c13185f9a64090ec828ddd732675f1afd95e. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLN580588982 — a six-check JSON result.
Sonata No. 6 in B-Flat Major, RV 46, Op. 14: III. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a72f373f817e71ac9c42dbc614da80c5dc08c66a69e9e47177b4601a49692c4. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLN580588983 — a six-check JSON result.
Sonata No. 6 in B-Flat Major, RV 46, Op. 14: IV. Corrente
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd39e9db4a0f5897b5fb42c001dc16d473d7c6d0af0a5e1f3c0152a4f654237a. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/NLN580588984 — a six-check JSON result.
Sonata No. 7 in G Minor, RV 42: I. Preludio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd8aff1c06710bd9d9f15166f4c265b45aef80dfe550032f84fa7846336a7a50. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLN580588985 — a six-check JSON result.
Sonata No. 7 in G Minor, RV 42: II. Allemanda
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01fbc137c4adbf81279cfd519624b16fb88e29a0d93f5993c11f87d68ce48f6e. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLN580588986 — a six-check JSON result.
Sonata No. 7 in G Minor, RV 42: III. Sarabanda
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf1c0d84a6badf763b05290eedcae9a525a0aa67919fa0916624b09af6c8e846. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLN580588987 — a six-check JSON result.
Sonata No. 7 in G Minor, RV 42: IV. Gigue
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e5a42c5914a6831d78988c716d0ae359eba64cc70a20e8cb27903b925ffb0c. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLN580588988 — a six-check JSON result.
Sonata No. 8 in A Minor, RV 44: I. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x762c01addf5091d806fac30b72b7975d479b4b7e9dda0c7518a012c3c996fe60. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/NLN580588989 — a six-check JSON result.
Sonata No. 8 in A Minor, RV 44: II. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x298e5877b5f2ba8b84dc6a636a2737780baa79158a30b477a6dcec787d69560e. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLN580588990 — a six-check JSON result.
Sonata No. 8 in A Minor, RV 44: III. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7871748d39d183a65e2b1dbc05a2d839845c473ee1b118b4d560a0ec63569f41. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLN580588991 — a six-check JSON result.
Sonata No. 8 in A Minor, RV 44: IV. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e312bc7418a428cb23b3f6b5d1d82e13dfa8021e9798c2b544d546c5c98fb0. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/NLN580588992 — a six-check JSON result.
Sonata No. 9 in E-Flat Major, RV 39: I. Larghetto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5925c795957b13e6af361d33a9940e2600a8ee28122aa9eb7ae3174ef083863c. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLN580588993 — a six-check JSON result.
Sonata No. 9 in E-Flat Major, RV 39: II. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08edd9f2f18ba8da7245c9ac427aa968c97acf06fdea6bdd377826bf738cd7b. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLN580588994 — a six-check JSON result.
Sonata No. 9 in E-Flat Major, RV 39: III. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x625d44f3ce24616e32f20d2cc79070c3bf9a726b25004a0888fa2831312b5b66. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLN580588995 — a six-check JSON result.
Sonata No. 9 in E-Flat Major, RV 39: IV. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36714d79eab1afd9f23873aee8c370566cb1f98ee9bddff695c7ef92c95ace1b. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLN580588996 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f01d092459e035cfec0a5628d6125ba42b661cbc651a55aab9943600f2d52d. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/ES7890401230 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc12418fa7dd0cbbb7aba5e5f913451ed06dca171126a5248be8f4131170accd1. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES7899300101 — a six-check JSON result.
Trio Sonata in D Minor, Op. 1 No. 12, RV 63 "La follia"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87d2f9a08f4b59ae8f314093e2a108debd8a29cf30b99393b7605395336785ed. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES7891901001 — a six-check JSON result.