Rionegro () is a city and municipality in Antioquia Department, Colombia, located in the subregion of Eastern Antioquia. The official name of the city is Ciudad Santiago de Arma de Rionegro. Rio Negro
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 0xd47258a4d9494c9ba7af369a3dda4c9f0a16ca2ac45a1e488df6aaea545e6a73. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/98411f7d-c223-47e9-9343-ede4d94ac205.json and https://artists.proofprofile.net/proofs/artist/98411f7d-c223-47e9-9343-ede4d94ac205.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Esperando Na Janela - Ao Vivo Em São Paulo / 2004
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 0x241711dc94412a1bdc74831bab6ac0bb62eb1bc61ad1bfa39ae8391453c61c76. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/BRMCA0400257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97181c2e2b0e46dd4f10f7231bfd9fbe86c1c230bd20f9428bd33cc0f02c09d6. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/BRMCA0500800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50db7f011cf8d7afe9e47c1f5d08199a8ee85c7fcc61fe54b4dda0442efe3352. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BRMCA0500812.
Onde Anda Você - Ao Vivo Em São Paulo / 2011
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50de62b5caee7fe100b7183a0e32578ede3541a0305260e32d1dbc68470ee57c. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/BRUM71100174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf260b59fe116c7299402a1c261ab31a1ab0e8d1f708957f21773bab3e8f2d44b. 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/COGY11400152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff4cf70df31fa5344b75aa022bac5b65a37be16ae07e716e0b71189bde1f6227. 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/BR1841600121.