Xavier Dunn is an Australian singer-songwriter, musician, and producer based in Sydney. He is known for collaborating and producing with Jack River, including her 2018 debut album Sugar Mountain. D
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 0x4c2656e751caf6e0e8b285324eb2b0c4dbd88b1613e88eb05a56cf06c0149b7f. 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/aca78dbc-279b-4cfa-a662-c7e7950a89ca.json and https://artists.proofprofile.net/proofs/artist/aca78dbc-279b-4cfa-a662-c7e7950a89ca.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 0xce66f40216a09e7afa9fc06695bf4b95cbb4a35401220ee1f5ee35477730373d. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/AUUQU1600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ced4f24e2a4a760eaab074ab694a0075fa6c1699091f2c1c1cdf6299f624794. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/AUUQU1600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc9fb0d04c562ba62bd8d0cd13c3d3ef56f0e2d1c9fd8cf02bd498fa5c3df235. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/AUUQU1600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0fe42eaaf64ccf6d457c7febe7f520e8dda4ca95dd237078ccfc0e6187b477d. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/AUUQU1600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1afc9f792ff83ccb9d757e6b14d458cfa7b876d5ef616a5fb61769e1f8429dd. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/AUUQU1600009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86bfa6fa41033c6efe0a078e906bd2736e52bd34ee70d5588def1ed222f5e731. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/AUUQU1600016.
Give In (feat. Airling) - Polographia Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc523e23366954c31d5a19aea8f9fd9f532ac4cc60736b5324521b118e2c90c3. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/AUUQU1600019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb04ebd7517b7bafc3ae9f7e8a0cbe3f4cda448462db098da0b5d84193bd78a. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/AUUQU1700028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec85c90c0e8e0747ce00947dc40e23392e977bec6ebd8cabc6a3f80b39d566b1. 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/AUUQU1700030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a4caf636f094ae8887ed82f8edd17be81ccfe7a2cf9bf58ef7be30e1a159634. 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/QZHN62191039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dfc1b3363f30264ca4e9f4fe01923576c638f2602c41c5fdbc6b8c472a09525. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZK6G2302351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf200e51c85203fddc05109c3c92b804f0d4f0c3883a0fc5bc52c2d189a6b6d79. 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/QZTAS2309056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x261163830b51737dad5c40a9ce09e8c6016ea68dbf4f625a624cd87b6fae9495. 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/AUFF02200027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d35ae031a644512b995faf31ae18811774dbd823bc0391126c9c2394f28c778. 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/DGA062350308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d35ae031a644512b995faf31ae18811774dbd823bc0391126c9c2394f28c778. 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/DGA062350308.