Marcelo Coelho is a Brazilian American computation artist and designer. His work focuses on the boundaries between matter and computation, and includes interactive installations, photography, wearable
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 0x9be9df79ef09b4015a30f364cf3e1f3516dc4cee3601c2a30a245bdb8a0eb72e. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b3433f2a-129e-4df8-8763-495f3fba07ec.json and https://artists.proofprofile.net/proofs/artist/b3433f2a-129e-4df8-8763-495f3fba07ec.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Na Hora H / Pra Não Pensar em Você - Cover
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 0x0248f00883d2116eef7f2450df0ce53d703ad76827c2519f4f08bc3aa82ccd82. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMZ92077495 — a six-check JSON result.
Sem Radar / Acima do Sol / Quero Ser Feliz Também (Farra do Coelho Acústico) [Ao Vivo]
Decida / Seu Amor Ainda É Tudo / Vá pro Inferno Com Seu Amor (Farra do Coelho Acústico) [Ao Vivo]
Antes de Voltar pra Casa / Coração / Cuida de Mim (Farra do Coelho Acústico) [Ao Vivo]
Esquina Saudade (Farra do Coelho Acústico) [Ao Vivo]
Farra do Coelho: Fruto Especial / Você Vai Ver / Calma (Acústico)
Amigos à Parte (Farra do Coelho Acústico) [Ao Vivo]
Farra do Coelho (Ao Vivo em Belo Horizonte) [Acústico]
Fatos em Versos (Baseado em Fatos Reais)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eabae1bf1c8b4d6de25978e2b96ed1ab504ec5e6d115ab29e0d36929aef4132. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX01B2300091 — a six-check JSON result.