Sara Curruchich (born 25 July 1993) is a Guatemalan singer-songwriter of Kaqchikel descent. She sings in both Spanish and the Kaqchikel language, and is one of the first musicians to use the latter in
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 0x018182591b67d8a147ce686c43c10e2b1038c8f575b0cf2cc0d163c46d4b5ac0. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a9deccf6-afd8-4645-99e4-214a787a2096.json and https://artists.proofprofile.net/proofs/artist/a9deccf6-afd8-4645-99e4-214a787a2096.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 0x4bd213db238e9a951a45da68a94cdeb40bc18949a8f86a0486086521c6c95130. 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/FR9W11816470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd0d7306244fbfa6e987fed4acc8fb940cf41ba7c290b68fd77f74c40a5b7eb. 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/FR9W11816472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b12d74a644d3bc8f5d62e1c1f2de1e6348967358d85d3111c8cf9e78433ff3. 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/FR9W11816473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e2c8338d5ac9bf5e78d29ec15d063b4a940d6b92ef70089c762f5cd668a3203. 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/FR9W11816475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x773337d8501c27986ef34e389d2ee2db1ed8b06dd9751905d4ee4b820fa91752. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/FR9W11816477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c5a682a6673811e668a9f8aa2d634c8e93a33f0ee7664f598eaf8944a87fa6. 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/FR9W11816478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef37fe50021bfa03e115ed294f02a1f862d934995b0fd5e33b9324766b7ab68. 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/FR9W11816479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d53c60d41dae3aee4b8f5eb06cacaa95c746dbb861acc7b7b92f2a4ffe641ff. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-21T18:40:41Z), 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/FR9W11816480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2a76a331f10d0d347a7847095d7c569516ebc7e71e939da7c54a46ddcea3f4. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/ES99D2100104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4709ccc4270486115a529cd7961b520a1dff200f75ad2cc181c63615f204a720. 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/ES99D2100101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0eaf0eb53a7c4f54fe6c125b1e128c5b71093fb8d8cd5ca02e8fb9a3cb3b57a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ES99D2100099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2a76a331f10d0d347a7847095d7c569516ebc7e71e939da7c54a46ddcea3f4. 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/ES99D2100104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3dc5198da2990ef58f5d417231dc5f89d1f9cec07fb0562451982c77429ef4. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ES99D2100105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f97bb9d6c0fbd5f615eaa8abbd143d7921ca74193dccd1878506e72c598b189. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ES99D2100107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ff46ba6099a1b41361d8a02d27d2255563e267c87b2d23878e69dd14573e98. 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/ES99D2100108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x208a23a8185e85216a4429a577858d3087f5120e100b0089694fa0487917d28c. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:47:24Z), 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/ES99D2400035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9251a94a63966547c10aa16876d2247c50f521a809b7a3f5b60bbc55c695554. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QZZ8B2503834.
Soplo de Fuego (De "Cordillera de Fuego" [Canción Original])
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53be1c1a17ed8c287247df68b243572dd6d818a2decf8d1af549bb967eef8227. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/US6QR2400065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfda9c36ac1949c0cfe5f814f28b948ea755ee5203ca0da6a5b49ce783d46774d. 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/US7VG2198050.