La Pestilencia is a Colombian hardcore punk band, founded in 1986 in the capital city, Bogotá. Formed by Héctor Buitrago and Dilson Díaz, the latter being the only permanent member of the group since
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 0x20064be09eb4d1184ca7522cebc34f0c1cb4144a9d84be1242882fe92c3f4ede. 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/fb2bc216-d8d8-446f-90eb-0634b02af01a.json and https://artists.proofprofile.net/proofs/artist/fb2bc216-d8d8-446f-90eb-0634b02af01a.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 0x583fefe5e660ed164a65b5db05c94cf6ba42610f9316726df873c2eed815101a. Chain 2 (Bitcoin): anchored in block 957653 (2026-07-12T04:35:02Z), 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/TCADO1897993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aea2565bfef1f0301b8721146dd9144cfb7e743fc926988f42dd4196861e39c. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/TCADO1897996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x486914470376eb8890800c072e6e0c3d649fc5504f55cd60d44b871683e106fe. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/TCADO1897998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd88ea42cae090d263a09424477da9141a8e8e6a7813450d1698bbf1f4fa962f6. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCADO1897999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca05c379336394cfddc743c6c76251de1d8ba856f373e72499902145ded1549. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCADO1898000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae36000fee9b9acfc49e26cbea1fe003107089ef3f0c5ccf378c2ad6f010b336. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCADO1898003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f8b2bd64424646291f19c22448d5879ef22e0649e4db10014f3103ca139e548. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/TCADO1898005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64cea0937e0837368cdae7f72c34886bd0fb7c98f9b0e9dafa843a28182e4b7d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCADO1898006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4968295f3d78b52b8e842312eb0953273c2af54ccf4ed46f2a168182a225ae8b. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/TCADO1898008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dab3b3068a87bdb44b26faf513ed437f674d633334eaec70ae79b017d60b791. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/TCADO1898010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4064b87e4607e58521793129a71e083f135196697268dd620dd7209b39872cfa. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USX9P0677204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a21ce19a9b166edd678b7661339ef2eeb83c2a45286beaacb57a50bd5c3d147. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USX9P0677205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf5f4a03ee7d9d1968eaabfbf8aed41a91c97449b1b40eb6b5375a5fe179c33. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/USX9P0677206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fdc7154a21b6def5013aeb1165df206222ad052280925c9424c6b20bd5add29. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USX9P0677207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd9ee0b60d7dfaf7e309680fe27a169dd9398c1daa31a72b4e763827a6c7f442. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USX9P0677209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e1547b7865a71812a8bda8f5237d5474a03759844c0a336338d0b5e545a284. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USX9P0677210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b4fd5d45062781a7011640a318e7cccf8b5d9219d614b267cfcb7f70605e644. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USX9P0677212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd45ebd41f197287b7057a4a28f922377964d484386d9fcdd7cc1662b6568526a. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/COH010500195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55d075dfe66d7546055ed0e3e04f3ac4e9dad7a46e1cf561fd6149aeb2f7dc9c. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/COH010500199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f799faac2742322a6932cfca9cb155143d03a30107d32fd6dc711846047c59. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/COH010500202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf859b56576698dc53e6fc416d66ed21fe74c7373c181c52a341cd989e4e5ab7a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/COH010500206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ee20372aba7669b12c045e138923c9791df4229d4b14c8d21e576aade3e613. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/TCADO1893729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52fe698927734553cc5549731fb3f45e34d94929588ab54cb697fcba00c29adb. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCADO1893748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70ade08a8c8b515a1a4a6adb26b0475deac61427f8526ae11f01ce1985c3ae72. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/TCADO1893757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79431d4cdc9d63536baae2ee658510c25235c9afeef6093c7a73e87c224e42de. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCADO1893760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa9bcaa907e648c186b7f978cebba9dd40bf29f5f9ab2a982d1feb7f527d20e. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/TCADP1890881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0bc5ec88d6f1909ef15b27e8ad38e90f33bd15b764cfdbdffed592dcdff3507. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/TCADP1890882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a84267bb138a8a9257d55414226af687a6891945821cb2eb2196412d4f7f74. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/TCADP1890931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49779901e755fabc15f9f303515802f9b70dcd2aa06ed184c16cb236503d2af1. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/TCADQ1815583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2195899bc4e6e65c99e653554e82e7dec510d253d37f043215bb26f84e4c9205. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCADQ1815591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x539e544fb66c32a4f7c4dc2e0ee85465b53e3fbf5a65a58ed56854acdaa7aca8. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAFE2093587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf56d01c045a0ccb0ac12f1d7027f53ee487c864bb076a95e56bb2e94511868e0. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/TCAIF2474381.
Ríos de Dolor/Justicia (Versión Black Sabbath)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cc64834da39876bec82fecff6b756bfc91efc99250ff960fab2d346a91414cb. 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/USDXS2204043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288343c59e6f1c3f67074973940d4ddf5f2eed0728a2d5f6cbde8a454c0ac3d5. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/USCGJ1432181.