Concord Dawn was, (until 2023) a New Zealand Drum and Bass group, that started in mid-1999, consisting of Matt Harvey (aka Matty C). Until 2010, Evan Short was one half of the group. They were courted
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 0x2071d50de0429a848e80a0b39bc98c9e09bab29225f71b92e7c1c40ffaff87b1. 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/0562cd32-90b7-4938-80c7-94563d9f2b01.json and https://artists.proofprofile.net/proofs/artist/0562cd32-90b7-4938-80c7-94563d9f2b01.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 0xa383ad5cac948eea4fc9624146befa032da6c336127eaca1802436759289d1cf. 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/GBYQY0700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf7189c48a6d125336d770a26583fa3ffd2e0a48094ab7d081bd65ab02cc6db4. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/GBYQY0700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a14107b8c84a2c815859b61e62003428043f0fea40721bf35e626081f9bc1f5. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/GBPVL0600041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7da62858d891d4a91201cb0533718799abc4f873c874b2ae2969a43dcd8b3cae. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/AUBEC2073218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x402f88020e1369f832e17ab903988a3e5ac1b7655af0a3106bf9f4b840fd7a19. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/NLCK41057221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x809fa9edc5b54d412b4846e21b693da8d29dc68b18b81b31508754f70bd622a3. 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/NLCK41057222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c2d92407c47d14bca9e0d60cb9ac1b6c2c96f3c9155536732b0893230195490. 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/NLCK41057223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc605e9e772092d07befe916f3ab5ec817d25f07b3a583ae2cf72a0da7a892bfe. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/NLCK41057224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97f64dc6da6c7f64ad4c8487ae8bf46b01dea79ae2fef6e5f6d82cbbf0649905. 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/NLCK41401687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db536fc83cc939dfe34e8dffdb3c602077a6a336f62bcd5e35ada57126b859e. 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/NLCK40900212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0db9efc1f3f250ac1cd91b9cb05113b1d51707a39b255c593eb484adef49696. 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/USEPW0900174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57073d0d462848a44a1110dde8ff805e14b512f3b3b37ed468b9be4b4f7830a6. 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/USEPW0900175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f8ca11190c2bd0aad055c5c642b527ee030dd051683442ae1e87aa5c177dfff. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USEPW0900176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe60f0ee269d28ce5f22e748d058bd1c5ecab09468bf260a5ff81d105b611e2b7. 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/NLCF10700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa601a8caa01018627fa4b1d757f334fb420f7b5770446dce9fdbfc98d6831202. 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/NLCF10700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x657bc5bd8e533470b8d4678a00029efd705c5977cf3f2841d3f6d67916283a57. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/DEZ650603782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe69b17b33db585a0da1644a3fe2d836e1f3049e42ea4c6ae0a4063d7c3bb8910. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/DEZ650603783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12fddbaa3cbc0586455aafaaece3c17ff860bdd21af7fd829cdc00bce204411f. 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/GB5KW1703889.