Luis Venegas de Henestrosa (c. 15101570) was a Spanish composer of the 16th century active during the Spanish Golden Age. Few details are known about his life and he is most remembered for publishing
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 0x30f871d316234c85aa392ce7342da001515c0dfc595f30d4d78889527414e646. Chain 2 (Bitcoin): anchored in block 953871 (2026-06-16T01:46:03Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/075908db-252b-4878-add2-4679727116b9.json and https://artists.proofprofile.net/proofs/artist/075908db-252b-4878-add2-4679727116b9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Flute Music of the 16th & 17th Centuries
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 0x897f5c850943f87e8f0847dfb4731282b32cddf3aed449f29f906a880556ae71. 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/GBAJY8929801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x954a92cbfb9e2f8c08323a7db1f6571b1a1e4b29fb286d13e6e13bcc071ec740. 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/GBAJY8929802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50b026b9c4a4c029e974818dc0fbb7c08848f453e81871b7664e93d419678134. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/GBAJY8929803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f09e683a3c2f36318e7dfd3e1b66ab951a3724327d75233658e59806c50dab. 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/GBAJY8929804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdee68b6d79b5e1d76c37fc19a4a1ee300d4a65a60225fb76f9353e0964ee117. 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/GBAJY8929805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x938a1c0dcd2a146e8ce09220c980edc2b0695d93b5870e32b75d26b479fa91d8. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/GBAJY8929806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa277f091d45902c8979a80e4f77902bdb5bcede952eceb8d5815d21f96f76edc. 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/GBAJY8929807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d7867e12ab0efca60a391b76f908e89fc0a89241fe8931ab1a46a0fa15e396. 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/GBAJY8929808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6284e0c92988fbfeb89d71d17219df2d02b9e22de937c485f6990e1074f03a07. 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/GBAJY8929809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27025b070f31666cd6f38a879a6091bf0fb4cba87bad7c8196fae692359cb1d7. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/GBAJY8929810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89c1acd249fc617d199f5e4e2f15bf0eb759215a77a2ce275e578f99e576129b. 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/GBAJY8929811.
Bransle de Champaigne / Bransle de Poictou
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x202f0ae3b4d89992db5d67a0bdbbf059e0fc3de49808d7740db442e080a2ea16. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/GBAJY8929812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f66b27c046669c42cb453809f0e48e0d0dceaad05219b7143d328b57fe78b0a. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAJY8929813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5950f18ec656585770cff649199190b44c7bea152148df7658b5f92841b8e54f. 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/GBAJY8929814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd73589cdba1f55b9b30358c6fd97427ea07a9a94ab7863468e166c13274bfe0b. 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/GBAJY8929815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee6e075c8cc7efed83a8d57bb45337d1d236ed6b20a3a411d0fb859aaf9b6a6. 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/GBAJY8929816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa06a4ba6cd1c5f2472b82ba462f609e0c599b2dbe60c78854235e78a0cf26376. 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/GBAJY8929817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb75ca60570b733a19222774ecbb8cb7d2b97ed6b573cfef9326a51b2a30e79c. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/GBAJY8929818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8efc0862feb93c962d101f579e2a2563161739a44b5c20c5e0ad32f97271ddd. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/GBAJY8929819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbcaf49016b30db446e1b7801e4f2ae4b172b05cf86063b8ea71c487cd93d110. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/GBAJY8929820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x941860bd000a60f526d97695439949d5a60aa176f9b0b9d9eaf08883c59cb894. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/GBAJY8929821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c4292049e58ac4963f45d74983469b2e3264d493cbf2a31e53917f52fe3537. 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/GBAJY8929822.
Entrada (improvised after Henestrosa & Cabezón)
El arte de fantasía: Luis Venegas de Henestrosa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0017d3f3f87230e98cc73dc0fd7813a1e5c730e7bc9ceef8bfad2b5ac0b62a2b. 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/USHM10331601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc38c6292972cf53b32b467eca4682178c2d4f8760a5d2d87b516b0eee74aa9. 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/USHM10331602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c4381d1e1379430abd83cea84c001d7d93892556434710dc07e84ff5b14b8d1. 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/ES7891902001.