Julián De La Chica is a Colombian composer, pianist, and record producer based in Brooklyn, New York. He is a founding member of the independent record label Irreverence Group Music. He is known for h
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 0x1cddf6897cf737d611793cf55fc4a5b0ab3ae0088a0ceeba4965df9d91e52b97. Chain 2 (Bitcoin): anchored in block 953602 (2026-06-14T06:58:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0fc707a8-b3dc-4f46-808b-55c5c1739eb9.json and https://artists.proofprofile.net/proofs/artist/0fc707a8-b3dc-4f46-808b-55c5c1739eb9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
De La Chica: 10 Nocturnal & Circular Images, Op. 5
De La Chica: 12 Experimentelle Und Unbestimmte Lieder, Op. 9
Experimentelle und unbestimmte Lieder, Op. 9: Präludium. Gesegnete Dunkelheit
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 0x47a3d48c287c9ab97f9d277eb4c112e86f6791eec1d1a345de8d15b8fbbc9410. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/DELJ81876807.
The Last Conversation (Music From The Motion Picture)
De La Chica: 11 Voyeuristic Images, Op. 10
De La Chica: Duet No. 2, For Violin And Piano: Sintra
De La Chica: 10 Silencios Fatuos, Op. 16
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e292f38ff0a174dc590b64e950bf5932f7153c308353732853be2f1e5c6e148. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:24:59Z), 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/DEZC62128327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f06c22727592e95dff17754939e273a2590fdcab8c8d60024969fda6fe4f353. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/DEZC62128332.
De La Chica: Paisaje Nihilista, 15 poems by Susan Campos - Fonseca: No. 1 Mandala
De La Chica: Paisaje Nihilista, 15 poems by Susan Campos-Fonseca
De La Chica: 4 Experimentelle und unbestimmte Lieder Op. 9
De La Chica: Dispersed And Transcendental Chants, Op. 18
De La Chica: Arias Florentinas, Op. 15 & Canciones De La Muerte, Op. 20