Dennis John Cometti (26 March 1949 – 4 March 2026) was an Australian sports commentator and a player and coach of Australian rules football. In a career spanning 51 years, his smooth voice, dry humour
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 0x30821b16b574d9b5d168bc47ca62a6761427a950ceecddfacf919bf27d607d0e. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fc97d195-f86d-49d3-afd9-5e356149c766.json and https://artists.proofprofile.net/proofs/artist/fc97d195-f86d-49d3-afd9-5e356149c766.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 0x8438beadbbbfed7f673684bcf430e7cca48f5e3fbfd07ba76a22286209cde9af. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUBEC2317825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c8f840e8403ee586f3799c1f4c1110dda798c81fa4e96f986fc340c5bd8d3c9. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/AUNCC2300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd6bbfc67522f9036530975d9ce81583b08c68daa3addfc67a043da122726e94. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUNCC2300031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa019c1da708ae84420867847654044734d3c4ef0e29d6d70c7c92b9c4a116886. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUNCC2300032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19aab8e4d492545a6e9686b9b35cd182d5c1bca8826a9b4dc3ba873c5361a5b3. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/AUNCC2300033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1ab279990751f8457f81c8f26f028730dfc1a4893798bcc6c74d7deffbd3782. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/AUNCC2300034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b13ef49b4e497b71df55b79505203edb719ca54e7cba2cf45ee8e347e6441b9. 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/AUNCC2300035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf37663c1cd287fc400b01cc29dab32f4d09cec18e88d8abda39b115251846bf. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/AUNCC2300036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fd3d21f7f1908e2e7c6077a7f937950ced6e92743e200d8fe6b94ca6966b41f. 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/AUNCC2300037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf71d7a4cd3c1e702059b9f9a05b733b0e86721eefbd4c37c86f031a19b30164. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/AUBEC2234786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8d38b0fb06f225faf747e7bb72ab61d47c253e7af059e0c768e2f7cb650c4e6. 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/AUNCC2300038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x186dad55d791a32ee58af1480239fbc461ec489d512bb11ca2afc692d802b678. 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/AUNCC2000144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fb9796745db6b2d3e41822dfe8ac2ad9f67673531ce8fc4451b22221fa5acc4. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUNCC2000145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd867d651497e827befecc35a23af298174978cfc19a73129598e9739f5666ca. 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/AUNCC2000146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39dfbba5b1d6de293a1c34d770f49c5dc19f474aa0fa9a6d4a99be5a24592e7b. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/AUNCC2000147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59485f9e4ce3d3e1a849d25d6a1a114b238e23d578c34be9c89638bf4fc53cc. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/AUNCC2000148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa60e54ff33815dca92cac7e8e6674bfe31e7d7d6fcce0b85684ae394fe7d730d. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUNCC2000149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e51235c802535c5c3e3d6f6bb399c8cf3df7d757dc556c18f95227a7cdffd9. 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/AUNCC2000150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ef338f692e0033b2e2790ba8f9d2eb5bb473b424813b9de43f83a55b0e90ff8. 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/AUNCC2000151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c2d47156aa2e7f431f33016dff6e2311aae66d49865e9a6dd3511e32a82aad3. 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/AUNCC2000152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8438beadbbbfed7f673684bcf430e7cca48f5e3fbfd07ba76a22286209cde9af. 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/AUBEC2317825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf71d7a4cd3c1e702059b9f9a05b733b0e86721eefbd4c37c86f031a19b30164. 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/AUBEC2234786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61507a0437752950414b9873b6ed058aa7e7f20f040c3ce6c767aeef59c0c818. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/AUNCC2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e35eeb832e9c3a948b6fe21e835162c31dc605dc3347dc441b1a401928f048. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUNCC2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x186dad55d791a32ee58af1480239fbc461ec489d512bb11ca2afc692d802b678. 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/AUNCC2000144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30e3e12176676171df3252b6d6993bac8fe5859b00c1a5add423caba43e236f0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCADT1810382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x725011dbf7498cbd8396621dab984cd9ffb16bcdf8420a0d11b513ad09a76ff0. 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/TCADT1810383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd414eb539923968fa3a8f2b08dfc1de590ee851ff2ba53a7124092a329fab416. 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/TCADT1810384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x674147b509fd509b559dcd3e10aec56bbb12f78c60086ac7b37bb1ffc9673a5e. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/TCADT1810385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c38cd556675acc1997c04607d1da4aaeab5078967220577798e94f0a006e7fb. 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/TCADT1810386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b43417beb93795b2363563debbd26bbda3dda0ee64f953b5579655fe3bf7d9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCADT1810387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c13e08cf38ac203c44aab307a7f2c72652c646010924b951fb9d0f566806da. 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/TCADT1807283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7c2c008013a5d33a751cd8983e5316cd08f88942ed0a2633d5de0b7aa4ac2a. 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/TCADT1807285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1817eb9932a605008db9cf2aa28a819ebffe2dd073ef9f22b3168738f74e4146. 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/TCADT1807286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea03c1babfdb0e379b73a3662459d49a5ae225db06423933023515aa7a537c03. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/TCADT1807288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3736ba1562f1d8e1ebf0ba2aa916630ac89c2fe875d691586c039558e518ae5a. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/TCADT1807289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x620a957eb648c9f0140741670afc5360c7224145fce44ad5946e5b9739d366f7. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/TCADT1807291.