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 0x60228351b79cd46496ed1be22bd3936b1a328d859f4cf5fba3a81dfa50494020. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e56af9b4-8d3d-40d6-a4ad-81d16adf106e.json and https://artists.proofprofile.net/proofs/artist/e56af9b4-8d3d-40d6-a4ad-81d16adf106e.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 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 0xf35b90bdcbfdfd8d85afca0bebe8d19e4c20d7886f578dd995b7e2bf7c99ed01. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/US7VG2178142.
Tac, Retratos do Tempo Onde a Arte Imita a Vida
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc642db6f7e4e5d00371db6e2a9975a47edba8623133cc7875ee8b5bb63ac055c. 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/US7VG2178143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9531ea2d261cac58e6e568b548c982c98cc4cdbc86bad187a218f7360efefff3. 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/US7VG2178139.
O Ponto É Chic, a Felipe Schmidt É Charme, Floripa É Show
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9794b8084e266c2c30b41dbb5ac9639a6e68da5201a01cc5d0a9566288cae386. 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/US7VG2178148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc9211f6f373c09522bb68f83c36dd15c5eacc06ee3ff4f256d1fa941da4f3a. 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/US7VG2178146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d292c6332df6a5f47585245aa9b71f62dd423403d7153c186e244232fa6a10. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/US7VG2178147.
Praça Xv, Paulo Fontes e Nego Quirido (Carnaval 2024)
Ontemanhã - O Tempo nos Traços de Hassis (Carnaval 2025)
As Doces Aventuras de Rocambole (Carnaval 2026)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b4760460fb4274f5663eca715e45b5ca6aff2a7c0a1a422013d640e619f231. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZNJY2594382.