Capsula is a psychedelic rock band from Buenos Aires, Argentina, formed as a power trio. The band consists of a core formed by Martín Guevara (guitar, vocals) and Coni Duchess (Lisica) (bass, vocals),
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 0x5c99b23730eaca3ede23c8cab46e7c3360c6b3d7ccc861599859e06e1bd574d0. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f18bf909-02ca-4c2b-a2a8-5c1be377a488.json and https://artists.proofprofile.net/proofs/artist/f18bf909-02ca-4c2b-a2a8-5c1be377a488.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bae75662b99b6c0ca83a3e13cea08069b836938ee0254b44a96cbab1e0e00e1. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:51:30Z), 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/ES6490917101.
Dreaming of the Rise and Fall of Ziggy Stardust and the Spiders from Mars
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b5a2d87a9a6ae7f0d3654336372a26a5316c81c74a6358bb7714b793ddc531f. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ES8261928008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8f8c6811285316de68229ac29934224e0933767a42b375e916f1d01a0f30c79. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ESA092314874.
Caballos de Mar (Cosmic Live at Gizaburuaga)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0950bd71e82d67bb0b275b7f7de37a88a3b289d7028c3a5097da0f0ff0f3f21. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:22:42Z), 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/ESA092495222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446327ef243c8123c9f584fb3195ef4ef766db28f52c1b8a53ddcf75de3d0000. 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/ESA092409159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b8996464ecb73390a0d0213819d5b1ae6afae42c79370298623ef3a7ebcf12. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/ESA092407085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6552a607ebcf5f60e92725fbf3a5e289f8315c3c4fc902600c6e70f3dacf0a36. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ESA092410529.
Seven Crimes (Live at Austin Psych Fest 2013)