thumb|Agricola's Missa Malheur me bat as it appears in the choirbook A-Wn Cod. 1783, 65v. The name of the composer is given as "Allexandre agricoLA", with the LA represented by a solmisation symbol.
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 0x2b228e362d89d3644e27a9b84baed66d105bd8bed250a9392ce58e12fb6a3f4f. Chain 2 (Bitcoin): anchored in block 953750 (2026-06-15T06:12:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a9bf5ca0-67ed-499b-964c-71c94af78345.json and https://artists.proofprofile.net/proofs/artist/a9bf5ca0-67ed-499b-964c-71c94af78345.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
In Spiritum: Music for Cello and Bandoneon
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 0xdc80624215ace2f4dec775ec93909de36dd9a6f214f460fe294734ab76bead93. 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/NLY332100311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ac3eb6fcf2c03bdd14351d07c44cef9bfd26dcc0e4a71b54a09dbdf7a6c1eac. 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/NLY332100315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb4a27e07a99b232311c206f2944abc695c044216cb7bbe5d8c1ddc5c3e46d64. 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/NLY332100317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc05a4a67dfecc741b5c93de62d28cfbd2cd352792082f9908f382044f537c5de. 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/NLY332100321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ff54e6e04edf6c7ce161e84cfdb90475d3c071b701879bd7368a36bc5c7756. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY332100316.
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 0x19f373fc09bf42a96bc3142bfa880d8149a85a9e9260f3057ebb71f1a34c2416. 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/NLY332100318.
Vous ou la mort (Flemish Courtly Love Songs)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46bf09faaeaeba581a35ceee6b4be147d27d529da5488ae920a5f2b3975a3faa. 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/MX2831000127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x744ac2f6fe5df4143284a0b0907edc27c767af2c7c5cdd8948f30fe62e208f9a. 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/MX2831000133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3127106fc2fffdd974f909a9cb974ceee5d688cd11f25ac202fa79b28a3b00ce. 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/MX2831000135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbec17f6b1406fc3a2ed19a21f673bb85120a3e8031e3e582633515c6fecd333. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/MX2831000140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a754cbdf7b54f39756780495fa4c7f8bb11d86c8b634bbdde50908db7383711. 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/MX2831000145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x704c33b69fcf52d663a8c90c78e51ec2e1d4b3fe9b0493664fca365e66c7f068. 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/MX2831000148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aefb190b2b362a7a51bafd3558584f3eaa6b3136866d297aa4d8359ff0ebf59. 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/MX2831000150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde62631b48e14a59b17cbb8940f820457ee128e6c644508d5b8d724597511e61. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/MX2831000131.
The Cradle of the Renaissance: Music from the Time of Leonardo da Vinci
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3784cd7759020a13f72c337b66693becccf813bff1ac7fd77cd40d5629965fb. 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/DEE471900125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa0a9399bfdd0226082913cbf3f7367a563324ef1898674719ecdc7066486a3e. 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/DEE471900127.
Dictionary of Medieval & Renaissance Instruments
Dame, ne regardes pas (Medieval Fiddles)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9941a5cffd48401a03a5183902f825c35f8e74edd34887d3a1f250993dbeba41. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/MX2831000690.
Un verso de Morales glosado (Iberian Cathedral Organ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b5d942a8f202a548e10e9257f58140a4f1d18bd09ef939e0b8ec61ed6fe1cdb. 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/MX2831000733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeed0187233e93be40c99555e492c02b58d99fb782af04c482da0bf40781f14bb. 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/MX2831000736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1559e3d6df3b75ea953940a7cc920eba4e2618132123f55648a43961866cee78. 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/MX2831000695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52dd66c32ca8c02f681f52387a25242e01669af6fb0cab0379b40cfd0f99650a. 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/MX2831000699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86f41aef92d098e542df02cf26b0acc3ff72d20251892c7831c698889f210f84. 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/MX2831000700.
O dolce vita mia (Renaissance Lute & Voice)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc445d7c9d72b55a17bce127213b403a5d98693ec4e41a772e86e4777e197de. 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/MX2831000707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdc561e1f0b21590be89615f77cbd957dae7753264faaaa044faa58ca5a92d3b. 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/MX2831000708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe05c287e27e4517cb82d51317ce2582f883cc5b4d6a90c3ae0a957f3c9b3d035. 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/MX2831000714.
Gagliarda prima (Sopranino Lute, Guitar, Archlute & Viol)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d1efaafc1a65ba126cddb8a72eaa15ffd0febeca73408e75f219c46d978b0e9. 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/MX2831000715.
In seculum d'Amiens (Ensemble of Medieval Recorders)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dabc86b277ecfe008658d9fbbcc05572fd82e9b8e7f6d67e56f4e4c8f6040a2. 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/MX2831000717.
Triste plaisir (Renaissance Recorder & Viols)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf1ff424ce67e9161f062924f761ceeb901a6e6ec09cff051bd10aa7905dd8d. 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/MX2831000719.
Correnta sesta (Quartet of Renaissance Recorders)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47462c13597deceb9ab62ba38f647e3f3e4292b8519b3e0496434e974687ab05. 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/MX2831000724.
Gentil dame (Renaissance Harp & Traverso)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b8a4c91a0c07e8d79407f924b753bdff7191f298dbbb334fa5f3e2df4a3783. 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/MX2831000725.
Ungarescha (Renaissance Traverso & Ensemble)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x870f6c127847631a18c89ef6b54ac8ad6cb4440598b5e80bde858b39f160cee7. 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/MX2831000726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ee65676de15cc0ad9a5ee9f56a71408adef885076101d7f46c76cc2c92c340d. 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/MX2831000728.
De tous biens plaine (Renaissance Recorders & Viol)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc49bd5abd648d5a68311c2eaad2cd397ffacd8bfe669e49140e6704a87cdec5c. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/MX2831000720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e8b381e833acda8c02ce56be26c38a3cc0e8464be883d6154d76f04cd6466f. 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/HKI199930606.
Dido and Aeneas, Z. 626: When I Am laid in earth
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ceba3173d874ad6f58887079f43e04cc56b1c356aad95025dc9e3b405a33b49. 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/HKI199930712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db71544cdd5036bf1689fba8c78fe77074ed62963b103242bffc7db345dd2b0. 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/HKI199930715.
Saints and Sinners - The Music of Medieval and Renaissance Europe
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac69e0b5d52fc1af7f563265301d1b3fd4a58b4f2c63e3d2b8a1fec2b2b3c6f0. 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/HKI190008801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x188ee2790b8cff06c118b7a1c1c87eb1c2cbec0a54efdb9b15e521af9b8fd87b. 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/HKI199530308.
Sederunt principes (4-part organum - plainchant)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34ccee54ce3aa819cacdac32fb9cb5ed9f5b09950a9fdc65758f383510ebb039. 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/HKI190433631.
Laudario di Cortona: Venite a laudare (Come and praise)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b9237648a26b501c09db59d44701fcc02eac84ca3a033d064ce6a7dd1e32f3a. 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/HKI190556909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x467b9417444e2f213f3d37d1b476ba3c443839dc6e902349f51ade2f4b9e5a4e. 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/DEY322206003.
Basevi Codex - Music at the Court of Margaret of Austria
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe1600227968851ea8887dae33daf396fcf0f5803fb0409bba5e4d056fd28d1. 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/DEE219778303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14719ef0e6d1e33d3c5301929cc77f37b827e48a35e7c854874b07bfb3dfcc03. 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/DEE219778306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7e579f2df4678f961990f84c1c5fbd750ddeb1a4ecee9274e7944445d5bc34. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE219778322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x271a9d31bdd888613dc5d98cd1dcea7f14834182e6205d22346d5f97396f96bd. 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/BEK732101414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8ef0c05a4733b677cb1d5241c7439e2ec8547665f2ac13cf9e8675f619348bc. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ES7891501102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4941fcd30c269128898d7b8cd875f1ab26d5c07e56a80d3f1414c10aa9c5307e. 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/USHM10542101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5757c89e1d840a9470f78fc6a5c6c5ece1b03ac0e39fb8ecd33fa57d12c4d4d. 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/USHM10542122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef2cc7ecc92c29bb815d91c04c4c2298e9973b13891d80c3cb6db104eab838d2. 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/USHM10542102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc28a267a201f708b9017c265fbe0e64325e991f258a37573dda602fe3140380. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/USHM10542107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaee39c0910584d64596bb151108e3f0e67b5e0ce4e26e056948df0d419daf0b. 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/USHM10542119.
Ottaviano dei Petrucci: Harmonice Musices Odhecaton
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b9564f98e34a61cb6e316ca8fd0a9de6c1fb8e9a9918c39cedb740f76cbade6. 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/USHM10129102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b5434a8f78431c6780760969fd9515529588e4d742b9542f77a36ef4320ee9c. 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/USHM10129104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e86dccb32cb6639493e21e47dce86f27d473e75d57e3a4a80635cbaac38d07. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM10129106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ac0dc6da67796c83dbc7291bc46074fdf8a1941df47b70167dfb4d3e6c17ae. 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/USHM10129110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x176396a2cc6104907ac7e2fcb5610304fbad7e0225c300ab27ce012f38939756. 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/HKI199703406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f09468ebd1961e5cebb74c8cdcd9a5dea52c350519cc8d58b3c3fba7596eb9c. 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/HKI199703418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cbf714988c4431cc61ffb6e22f97b7017e3b1dcdbd0c98663a42bfff7673c36. 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/HKI199703401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b69f97b6b3a88007150e4ef7ca8c45b523d7b1039ce3983b2d263186a9aa5e2. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/HKI199703402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa78cf3e33ad0bcb84ead1a97420372115f1b6b804f128766eb69545b3c0debb0. 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/HKI199703403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9792476274b85f318f3dba2c693db80ecb95807c730b6ad560c00985a094cc11. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/HKI199703404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87182c4541b5714c3ee49a1efce8927cda1d6b16cf452073ad40ae351d0d80ef. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/HKI199703405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf7d469c0762394722fbf84adfa9802cca95d7d470f72bc75ccd41015794fad8. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199703413.
Art & Music: Da Vinci - Music Of His Time
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f1649fc0ae9861b85f7f157d1f7d12ae39b8e4adefda989fb3d7bf1e13fedb. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199400914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697bcc7cc35c76ed86bc62d69c28b1dd4c6c2bc9f37d6ff60b1a564a63852522. 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/HKI199400917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x236fcfcf1c3f184219732a3372ad23eab31bf35b3751225fc545c5f9fec3a995. 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/ES7891001902.
Alexander Agricola: Motets (Arr. for Guitar, Renaissance Series)
Alexander Agricola: Canti (Arr. for Guitar, Renaissance Series)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c2e1b21d62dfbd4be5fa2b098de4e70f01582ab0de7608b37d23ae4d2a3f048. 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/DEN421510001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee48216ba4a82cffbc8112be11e4b446ae4b11f4cfa4bc56e4047d53be026ded. 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/DEN421510003.
Agricola: Missa Malheur Me Bat / Missa In Minen Zin
Missa, "In myne zin": Agnus Dei: Agnus I
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff48d3258caddcafa96a5269e58ebee0dc925f744265236904d0113a21c85cfa. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/HUA253201130.
Agricola: Missa Le Serviteur / Missa Je Ne Demande
Missa Scaramella (Reconstr. Fitch): Ic. Kyrie II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf97fe40a39eeea38b69ef4d27e5cfffe86e26a879be163d426a914e5fb9db189. 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/GBAJY2446005.
Missa Scaramella (Reconstr. Fitch): IIb. Qui tollis peccata mundi, miserere
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a48ceaa3a9fc7ef1bf9af655a632c9385e064d44c2a72a638702e3b0fca86c. 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/GBAJY2446007.
The Rose, the Lily & the Whortleberry: Medieval and Renaissance Gardens in Music
Fortuna desperata: Gothic & Renaissance Organ Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a657d33bc7d668c23276779f6d6533cd970c3aba0d60cc3eb5bb0b0fc1b4c8a. 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/GBCJG1402004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d44e818343324d3a5e8d1cc42e19701ad2968de2e99a2f15b99d7ad1bc8db9. 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/GBCJG1402018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae45e3e8010ef36332bed1443c399ab5a4b1e9ccfd56b1cdbed1512f831d077b. 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/ES16S1946006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfcb0935f9fae2f155492f1de34cea57077686e8a021c632e9ed86165bf1a788. 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/ES16S1946007.
Josquin Desprez: Missa 'L'homme armé sexti toni'
Art & Music: Raphael - Music Of His Time
Josquin des Prez: Missa Mater Patris - Agricola: Magnificat & Motets
Agricola & Morales & Arcadelt & Lassus: Lamentatio Jeremiae Prophetae
Lamentatio Jeremiae: Res - Sordes Eius. Zain - Vidisti Domine. Caph - Defecerunt
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6114c18a33771fc42834b1e5c79f5ed9489ed2c99a8f0dd473950e5739f6930. 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/NLHR51003375.