Cecilio is a given name. Notable people with the name include: Cecilio Apostol (1877–1938), Filipino poet Cecilio Báez (1862–1941), provisional President of Paraguay 1905–1906 Cecilio Guante (born 19
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 0x02a83a1989041bd76f9fc8e3b804de302cdd49e2927d7782ce08dc8ca741c87b. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/24cfadaf-6314-4648-a557-135c016ddb34.json and https://artists.proofprofile.net/proofs/artist/24cfadaf-6314-4648-a557-135c016ddb34.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x5103d00db951c92b3b5b039c9b60532cffd15501ee7ee20be28099810c844a5c. 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/ES5931000161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa27e6d4929b83c49413695809cd76d285dbe5497f2db82985425267e309b98f. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/ES5931000204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcb94d74d0f5cde0785015da44325f47980489c358a926dec1e27ded58c659d8. 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/ES5931501207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde42dfcdf5ceb23f2f5fdb2058fa24fd098d7a54426f21a7e27078755f15b270. 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/ES5931501208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c95fb10e0147e32c153cb653fd134c702d457edaa25676015c0edb9b87949d. 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/ES5931501209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d2435f6301077e8d6cd6a2d0f3f3c4f36bead2805e5f48b81f40e0bf3a06a95. 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/ES5931501210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7e38d12aa769085ccbb2f59b003a7b47db36e53eb7eae519b6f20809b0031db. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/ES5931000349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54feb3a42cd1549c91e9ad34a4c85011d73e7967ab4ff5ea43220b4e58ad9df0. 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/ES5931000353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a32a6bd5813fd7adcc8fb14305b643d722af5a8a69c263f30aceb30c78eeef5. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/ES5931000226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53cdc89a31f3c61f51294a33809055bf8a9eaee9b17d69ebce91dd66d88d2537. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5931000208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3023bb2268f4257e7e97270c49a368ec72a3b42677b0add396086705fea90bf. 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/ES5931000212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bc75e0008276656d3e7af8b2711f24788ed00eb2cadc9d6dc04def2c204cc45. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5931000171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3d2ac1be35e79ce998c0f5d83b84730cb58a83b53f6d5fb3ced6f631344c75f. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/ES5931000214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6dcd0a97ee017186a90ba761b28007da653634f3f09d0e221984137dec07b1b. 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/ARF411999086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fb1ef637f65513ba5aa3f05d0ead3a3d5f7cce81537fb3dd2f023f81132fc00. 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/ES5931000176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86a963d4e8338cbb348060beee4d7f47856f3772127b28a949c67b7550ab2e6c. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/ES5931000178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x589e9e8655e0cc08af381e452c19bb4373244897b88808c569853025a201fafd. 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/ES5931000180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244b72413b8dfeac6c9616fe3e3c10b25debdef104383780a6810e5b57eabca5. 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/ES5931000182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0967eba84a1fb9eec55d8bf02fde192923bb6f0c8e2db39214e0cde7c0382d8. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/ES5931000183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ebb976cc670068726d334c91f845ad23b4878f37d608cd2e19d3d4e13a1638. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/ES5931000186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e65e0d74102fc81ef091a9b5663b0e32d00dcb5a918159433fba552269b801. 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/ES5931000187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20a45650faf26feb453ee69c80ec8f8cd82446df0e1a18f73b4482a0b41033fb. 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/ES5931401021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08f8eb25bf4f6bbf01241e60b2e4a850a144b3e0f7b2e38d2d3ae8088d00330a. 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/ES5931401025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5103d00db951c92b3b5b039c9b60532cffd15501ee7ee20be28099810c844a5c. 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/ES5931000161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x071893864aa3e16eb8993c9b1b95fad25f30b32017144784da6c18c19322f180. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/ES5931000357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x159a8e5f64448e8ba6c6eef828673554a9cb28a9095c875bb962126a64323c19. 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/ES5931000361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa27e6d4929b83c49413695809cd76d285dbe5497f2db82985425267e309b98f. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5931000204.
Canciones Populares, Y Viva España, Asturias Patria Querida, El Porompompero
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x036b6a91f8d22b5d8ed75214870e30cb06c11724c77a26bee7dfd68a12ed7918. 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/QM6MZ1463705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15dfe21c0101667875b19e0fd8f8e7011142a9b33ebbd2171dd68c73e256d3b7. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6MZ1463721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3caeb9eaa735b63be0249d597ed24689f63441c8bc9230876366bcdc43bd72ec. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM7281422792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e0d4d8c87e755bb5d89120e8df6c33bb85c6c446ed69ac800a61e85a58cf986. 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/QM7281571883.