Vianna is a surname. Notable people with the surname include: Arnaldo Vianna (1947–2026), Brazilian politician Caio Vianna Martins (1923–1938), Brazilian Scout Herbert Vianna (born 1961), Brazilian s
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 0x3de4b61591e5703cb6e611fff7f388bdf7b082aa616a73cdbbdc189025218f05. Chain 2 (Bitcoin): anchored in block 953791 (2026-06-15T13:40:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dbd9c4fe-224e-4887-820f-6ab64a7c5c4e.json and https://artists.proofprofile.net/proofs/artist/dbd9c4fe-224e-4887-820f-6ab64a7c5c4e.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7137ce875bf2ff827a7bbc035c8edbbafd3053ae0fcc12cdb8824b11fffa3430. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:44:16Z), 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/QZHZ42276385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc0db95c701290a04b2bf2473fd9e7ca80c2fc402280c4b7002c8ce9ca87060b. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:45:18Z), 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/QZHZ42276394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d0c8c43db458970eb03c63531851bc2feb017850b9c4821a9a4e6cf5c4af348. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T03:23:27Z), 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/QZHZ42276395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cfe4cff1acfa24443f632058b9518ca21bdea3baa5e05aa493a31bad4f78f9e. 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/BC22C2300055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0afa43308ef670f2e31eb788294afbd2d9cd68c030d0e2edfd4280cbdd3440d. 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/QZNJV2426831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x342c934e9e388f0d87ed4033b3b75b9ec7c913478e7026b749623cb95d642a9e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZNJV2426834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9b5f8ea2c91e826a57dc2a886fb1c8f4feb22441331f858f1dba88c645ffeba. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZNJV2426835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x926124a6bfac97fa95091497d02cce03971fa14aefec86732f19fe3b53559474. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZNJV2426836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2effd740a6e08826fc910325eb7c6a7105c99c16982f6c28be2c682fae3210f. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/QZNJV2426827.
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 0xd200f79f0f4c462b7165db00295ac0b4dccea3a5a07ed6f1cb1c0deb819cd528. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QZNJV2426829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4112a88723a772100fb48f4bfc92daf3cf1c4d60ae1083e41b3e7703bec211. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QZNJV2426830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed9e0e339a0d6d4b417e50c587b1ddb23f08ba5251be0e8fdfe3d7026eaa399. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZNJV2426832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b81d4bfacaecf99baa32dac7949cbe651b20dc35a74ca43e40d347efecc6f6. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QZNJV2426833.