Vicente Emilio Sojo (December 8, 1887 – August 11, 1974) was a Venezuelan musicologist, educator and composer, born in Guatire, Miranda. Biography Vicente Emilio Sojo was born to a musical family.
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 0xdd654cd24825db37dcdef7a5a22403067e889aae698d0321ed9cd52457fd0678. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f1fa1134-91ab-4c70-9769-daf2e79f7b5b.json and https://artists.proofprofile.net/proofs/artist/f1fa1134-91ab-4c70-9769-daf2e79f7b5b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
El Diablo Suelto - Guitar Music of Venezuela
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 0x40b4e06b16ff2ee73d88ed08cebc44e83f13e4cdaa37669ae1f54f3f699bd405. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/USSM10307613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e796563f18f70d4c05cac28331fb9a2efb2503c5f35308893070109904ca875. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USSM10307654.
Five Pieces: Cantemos, cantemos (Aguinaldo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca3707a613088d89f64172fec236d36eeea9af6211c57a4bd4b700ab013546a. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/USSM10307655.
Five Pieces: Si de noche ves qui brillan (Canción)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x350fd21a2ec59ba491378a1b3605af408dfec3da643b3cf1c79103f02f7ff3f6. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/USSM10307656.
Five Pieces: Malhaya la cocina (Aire Venezolano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1633c66a1489e1549a77274cfdaffbaa0b52c09286472d9699d163bea2b6c533. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USSM10307657.
Five Pieces: Ave María ¡Que muchacho! (Galerón)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd613fbbcb3cae42489bc52735c35fcbf1b433d92b9ffffac462b685cd09552f7. 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/USSM10307658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc6bc4cbce03b684d17d6b719f64fd34b061c7f467166fd92f6d471ecd9816b. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USSM10307614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d9275dfebcba8d483e15598ace9559d23e2ccf5631fae24f74b7646d96346ad. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/USSM10307612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55fb8843de36deb6385f6922490973022c402ac68ebe7d04395df74cf32d2138. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/AUAB01750364.