Mark Vincent (born 4 September 1993) is an Australian tenor of operatic pop. Vincent won the third season of Australia's Got Talent in 2009 and immediately signed with Sony Music Australia. As of 2018
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 0x521fd9185303f83ae01aa4520bd937a83b355343c40b1d259731535d88047f3f. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0b83ac54-8911-4981-9928-e3e6b17f3b04.json and https://artists.proofprofile.net/proofs/artist/0b83ac54-8911-4981-9928-e3e6b17f3b04.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 0x76e9ea2774df2328b96354a92301d18adf76e313b5376d35874fb0d13bd82242. 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/AUBM00900141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c3dbcf8686a688f0b5ad664f8f9209b538f317bafc68c8eaa9f678cc1e668c. 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/AUBM00900148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19b9790cb8f4b3aaee92879d62b3f73d3a9e4a4154e6d319302b6c51420d6008. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/AUBM00900142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c65858ca7157806d2435a9414a2511190fb10ed4c590791f74a93ad40c1c748. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/AUBM00900147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eed674fce92ab34efdb1e67b27d721598a88942aa506a339fb1f5bb0f5568ac. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/AUBM00900146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x619b9e8464208a05eac530fd3648ba92a474a7b272ff0cb1c6e1dbbb664a99d3. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/AUBM00900150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a32c220f3145bbc0c602b2e87504ecfdc54e769dc95d918c1a4a09b8fe1e52. 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/AUBM00900143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eb14111a3e7c48c0c5c288e53793e020d012599f01ca11d7ae9db45d831401e. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/AUBM00900144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae0b8e226f339c4f37fffab6811167e4f0850700f2625c7df9fb7af992d9df2. 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/AUBM00900149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad3c1563c44ada0a6ff9c6d78b1e0200488d17117272cecbbf56f9e1ff2aad3e. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/AUBM00900145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c2d5e9ea8f9a150eff55a3e77487d207ad928b1f32c189453094220d8a32d3. 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/AUBM00900399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2d4b4c52922ee79aff486851e841cd3d24d082dacbb3eb08dfd70dc63d537f5. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/AUBM00900400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3122efb106edaf458118ffbc8cc7335ce5dd3cab39e11bb0fc374ac0e937f71. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/AUBM00900401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf54a3df39ac7e34a2a1dba65ecde9ef1e793f39b4de9c56c42ee8861f24c87e6. 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/AUBM00900402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72b565e697ea1227a4203e3961daeabbff762f90f363dd23297b624ed7492a57. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/AUBM00900403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82ba0ae6802f5cd917c2ba8e9bf8b6f0e2290d1370219b66c7072510a262682b. 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/AUBM01100471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x511b57a817b6738103eb69b083636af95b554a34c69a337ae41d17c735e8c045. 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/AUBM01100470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93c1ecf63fd5769c0801d9e841ab0d77e1d624187a5db2b0d9e653f532fdd82c. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/AUBM01100478.