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 0xcb3405a3ce613164f26dfe9bbe03adc0d8292b4b7eb1ae8084ef2a175efeba59. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6642944c-badc-4e7a-80ea-dcf0e847d0a4.json and https://artists.proofprofile.net/proofs/artist/6642944c-badc-4e7a-80ea-dcf0e847d0a4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Meister: Sonatas nos. 2, 4, 5, 6, 10 & 11 (Il giardino del piacere)
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 0x8f1a5973af046ad60183804b821b89e6c9ed77633783b50a5efadab00bbde86b. 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/DES380020046.
Sonata No. 4 in E Minor: IV. Sarabanda. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1974ad5f1929669ad57f0646dcb2d82d47fa6fabe88e96f4670257a2793c7c4. 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/DES380020053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13032c2efac9ac7544a8d845c5419a7a0b7395b9c03d7c79ada915f347908c45. 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/DES380020076.
Sonata No. 11 in D Major: VI. Menuet. Presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d31b95e53997172a42ef46a490baa5da780a0a098c54614f49af0c932bab53. 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/DES380020080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a8dd38cc2382068691ed3107aa09e575a33933ae235112467b1c84ae725ad7f. 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/DES380020044.
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
Sonata No. 2 in D Minor: II. Ciaconna. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd544f46c17db210bd370754cd1523df074a57221b8bbab6285653492c8682c4c. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/DES380020045.
Sonata No. 2 in D Minor: VI. Gigue. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc0188baf5da8387f73353f5a2955b18a6631ab0fd4cd14813bbbc9d314c4861. 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/DES380020049.
Sonata No. 4 in E Minor: II. Fuga Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4885f7d344df179850ac20627fa7634d73169525a8e70f89b5725788edca336d. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DES380020051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2531bdc3d6bebdc36c6d40789290c27a5701dd77343c124551b3c90f2dcd6503. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DES380020052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8dde67e0b3c59c77382526e75f9da293259e335f231a083e6bb848792ddfa66. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/DES380020055.
Sonata No. 5 in C Major: VIII. Gigue. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a6ab5e7c09201bdc7ad638bcdc5a87bcf68631d7aa5637792d18d75dd72c2fc. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/DES380020062.
Sonata No. 6 in A Minor: IV. Fuga. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc095c4942c5c0c33578b54d3b8f8f3b27e3b7a5381bc9e7f45e515263d13f7ae. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/DES380020066.
Sonata No. 10 in C Minor: II. Passacaglia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45a0d7116e88ac7b06fc0a8b20054d29c45b0a28b85e80a0c126b248d1c9382d. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/DES380020070.
Sonata No. 11 in D Major: VII. Gigue. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe28e2f1f0a09e73a01b1ade0d608a191f5d04f0f790a7f46b5c56846ac0e6d64. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/DES380020081.
Georg Österreich's Resurrected Treasures
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de2139196b812c4b3980ee19ad4348b2a24ad51c367e3aa9336be53a105f3d0. 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/NLQ662481901.
Gott sei mir gnädig: IX. Tutti - Tröste mich wieder
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc0bfc5d04ebf6ef6b24ebdf942bfd250f5fe552c883f9a0b5a5ac8ff0d44939. 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/NLQ662481909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecb9a80b9a7227047fcc47097d763addbd5aab1aeaf088343063702d1ed802ca. 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/NLQ662481910.
Me miserum!: VII. Aria - Una guttula cruoris
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4df647a8d1858f88beb801eef8f4c895226bd01456f667b67b0dee754657fcdc. 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/NLQ662481916.
Ich bin die Auferstehung: I. Sinfonia & Tutti - Ich bin die Auferstehung
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23e47736e25334ff80e2b633c8079f29c4f91cc76129ad957941e0627e4b09d4. 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/NLQ662481923.
Ich bin die Auferstehung: II. Duetto & Tutti - Wer an mich gläubet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9693816c01d7734906a98c967db164070238aa9342e18dfefdab75d9c7fefbc. 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/NLQ662481924.
Das weiß ich fürwahr: III. Canto II Solo - Wohl an mein Gott & Ritornello
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cf10792f2dc0a524799da0c6de9c74437848a62241937f260afb8191485b813. 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/NLQ662481927.
Das weiß ich fürwahr: IV. Basso Solo - Doch wehret ab & Ritornello
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11500451dce712edd3a1c1b488c38e820c28de6d76f0f24981bc76ae08c5c8f4. 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/NLQ662481928.
Ach daß die Hülfe aus Zion: II. Ritornello
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb60eb347c33cbed911fb05b4156239951cee00afe84424c0b153c64a6654e11a. 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/NLQ662481932.
Ach daß die Hülfe aus Zion: III. Tenor I Aria - Freue dich / Tutti - Durch die Welt
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8909ad5d878f994551831a03f09faff23e6537ccac4bc4abad93c5e6d4d6ed9. 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/NLQ662481933.
Ach daß die Hülfe aus Zion: IV. Ritornello
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x694c3fd5081d5cb9c699463d93363a71b85248305d827ae4a2497200331d60e3. 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/NLQ662481934.
Plaudant coeli: II. Recit - O Jesu, supreme
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13dae735ea9865851118f900a6952618960afba9dd0d3d7a5ee6250ead6d1864. 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/NLQ662481939.
Plaudant coeli: III. Aria - Tu universi es vera lux
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf10490cf649981b151aaaa23b4e47b262d3e153c96a4dfa7da01f550315113cd. 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/NLQ662481940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76deb216754f91c2ece46dbe9743928d324e2049edc03b6b36cfbd9d058e9429. 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/NLQ662481941.
Weise mir Herr, deinen Weg: VIII. Tenor Recit & Aria - Thue ein Zeichen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d4e504494958f9ebfed1762dcb0121ee78a0882bbcba9231348aded1a598b09. 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/NLQ662481949.
Ach daß die Hülfe aus Zion: I. Sinfonia &Tutti - Ach daß die Hülfe
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc56c203fa4bec5900ac0a78cf070575864db855bf094e53844fbcc1d7977e417. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLQ662481931.
Ach daß die Hülfe aus Zion: VI. Ritornello
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabae1644a63c473b07e567933f16ecd9d71addd45c148af6d7958b63bf40c73b. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/NLQ662481936.
Ach daß die Hülfe aus Zion: VII. Tutti Hör, o Herr / Durch die Welt
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e72ac6e24d06b000dc611fc5ac219da34008cb41b2ac7fbc4c0672386e4b035. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/NLQ662481937.
Musica Poetica - Choral Cantatas And Instrumental Music Of The 17th Century In ... Germany