Los Mojarras are a band from the province of El Agustino Lima Peru that formed in 1992. They released their first album in the same year, titled Sarita Colonia, and are still currently producing music
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 0x690f9d5fb89762a249dfe6f889a3f269ab05934ae10b63b498e1c94b311c3c90. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4ffc86c3-bdf5-4941-9266-470971697ca5.json and https://artists.proofprofile.net/proofs/artist/4ffc86c3-bdf5-4941-9266-470971697ca5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Las Mejores Baladas del Rock Peruano, Vol.2
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 0x3a65bb1c4a0ee9860dd0fa6332cbfb3cc6d621bc5ee045ad3f2025b607a6cfdb. 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/PEMG91315002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd126cc33594685231836cf4e56be862be0049f6505a7d89d54cda0020ed91864. 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/PEMG99927003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0252cfe586e507e4b529c6dcd735347f4d74524195ac047e8769265dc814c864. 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/PEMG99927004.
Las Mejores Baladas del Rock Peruano, Vol.1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fd6e9f71872a2db54eae98376815f8a475f578fbe061c8adfbaade05f450c81. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PEMG91433002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df55e45f78a3d0bff0be428dd14ac59be5cde850a47ba5159559ef5b8ec6fd5. 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/ES71G1815069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a945ccba6c3c475eaec13c41837315787c33b18b09b6d4ee613ed85feb9c59. 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/ES71G1815080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe502bf52e16f5a18edff07308b33df76f51485ba631e27b8d4723b2d9c2cdd8c. 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/ES71G1815085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451aba6c9a01bad6fe6d1b4a148b286606cff4d920540d9b33b5c69320ae2aab. 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/ES71G1815051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd02ac2324fb6106551f8132ffebc13084aada159d08221c7b49fe076d4167701. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/ES71G1815053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8269ac7aa9ca1d577cf50ed4dab5f4428e05514fbe8f661f7ad8312386b8e46d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:22:27Z), 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/ES71G1815054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccee5f1f1402438e149d176d5c8f1c1cf1077673ab5e2bd80dce686d8b95b516. 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/ES71G1815055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c0bd131e53e45d8a60ab1db052f906d2fc51b7268ef51f1ee4c4a22301f725. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES71G1815057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63049306ff9959dfb8eac3a4198752b7a297a676294d3ccdfc56eea0ec8d90b0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES71G1815058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a1d7ed72fe892bd7c09b4a12a98a3b543c7ce3ebfddc1e755f0fd1c44587c5. 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/ES71G1815059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a3856666f9249a420ab92ff39336337a8db6e579c90bfbf97de8a22a6dfa06. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES71G1815061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4063d5f91a6b0ff72ec696886a27f965f16ac417c6d7d09cf2eecec49b8ea48f. 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/ES71G1815065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x299a37e562d1d29778c46d9bb106b5f3188bf5ca28f0ae282d0f319c169fb386. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR10S1579915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc53c088a9d2e27b1cec97fb16a10aed0570b55b23bfb0915fd30757476e0bfe6. 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/FR10S1579920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf81026cb17707eeaa5dc6611bf59fc6e1512a29b06bda8d6b729f8bcd5ce3855. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PEMG99707001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c664a0668c94e78ae303f8b3b18df18042b38e336059fcf1811e7a261c72fd5. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PEMG99707002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad7dcdfdd4be209b2351ed1e41e04574af764292aa369ff06a39b9ea4790b9fe. 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/PEMG99707003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x502d0231c682929586ac83d25e06e35dfe8c0b3d653394db0959aab7b62864fa. 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/PEMG99707005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c4f9749ab20d8f8bf0d616d8730c3015ddebe84a3df30cb840f80781f4f424. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:11:00Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PEMG99707007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x369cb56c5fe46f7d26289c1d5cd040d0cfeb13698512745bee5bd252d6171536. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PEMG99707008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf52c8e0c89bdac34fd2e227e317035f6c872a247b6dbbc5b697e4f7721d91cd. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:41:28Z), 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/PEMG99707011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd126cc33594685231836cf4e56be862be0049f6505a7d89d54cda0020ed91864. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PEMG99927003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x502d0231c682929586ac83d25e06e35dfe8c0b3d653394db0959aab7b62864fa. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PEMG99707005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c664a0668c94e78ae303f8b3b18df18042b38e336059fcf1811e7a261c72fd5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/PEMG99707002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf52c8e0c89bdac34fd2e227e317035f6c872a247b6dbbc5b697e4f7721d91cd. 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/PEMG99707011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f46bf2c901de3939d370a38ff4ed505f783e1891c952df1df177b46ed7da31. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/PEMG91388008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x249ebdbdace4e9af620946bef8d519b207891662d59203e4dd554357bc050a9a. 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/PEMG91388005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3ac0814a3ecbbb041ef41f1786030867d00b16867a8b5b2be1768a382819fd. 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/PEMG91388006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2fa45d8f00cd6b8aec6b6fadb1bed787a9fcbbfe2ccced731d1e485c5f1273b. 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/PEMG91388009.
Peruvian Rock Anthology: Original Masterpieces, Vol. 3 (1993 - 2001)