NZCA Lines (stylised as NZCA/LINES) are a British synthpop band founded by Michael Lovett, also of Metronomy. Previous members of the band include Charlotte Hatherley and Sarah Jones. They have played
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 0x182b8fd97d675e7a22efca29ead108a7f6b3cb4c312203d1d0e2bf73fed1eb59. 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/d001dc56-f8ac-4e5c-94bf-02d24ce7d93d.json and https://artists.proofprofile.net/proofs/artist/d001dc56-f8ac-4e5c-94bf-02d24ce7d93d.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 0x6427cfba842f3b1f80717c911e3de57344f1a04f8d1109dd9b050c2f968bcab9. 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/GBDRC1255201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4f64be45197a5bc7bc90c817d79f4f340a5c0305b834f0a1ed2fd58328e10fc. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/GBCSG1600017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe207b49c2ff622699e2791016b75b68f961a05746cc6e8e32c94e64ee474950a. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:28:31Z), 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/GBCSG1600016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4f64be45197a5bc7bc90c817d79f4f340a5c0305b834f0a1ed2fd58328e10fc. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/GBCSG1600017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc02138efd2a694f6d4f6df9022adf466cd15647965a36939045ec127e0cdc339. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/GBCSG1600020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x620648fec583d47986cf6a6ad48497a6a8fde425fb6ef800c2543f61d7d8d798. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GBCSG1600098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x620648fec583d47986cf6a6ad48497a6a8fde425fb6ef800c2543f61d7d8d798. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GBCSG1600098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d5558e6b0ba533843db8cc36c595777aaaf8c6c7fc2b84a78880e9094fa5c37. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBCSG2000039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd33feeb1046c143230fcd7bd32ca806493984f5b24d1246226109d3b9b309e. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:29:35Z), 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/GBCSG2000041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd33feeb1046c143230fcd7bd32ca806493984f5b24d1246226109d3b9b309e. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/GBCSG2000041.
Pure Luxury (Django Django’s Boogie Beat Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ebab4655918f41c0dec2c3a779d38aed184a1ba8ac7a1bf3cc2c041ec82dda. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-21T02:00:05Z), 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/GBCSG2300066.
Technikart 05 - Le printemps c'est maintenant
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x620648fec583d47986cf6a6ad48497a6a8fde425fb6ef800c2543f61d7d8d798. 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/GBCSG1600098.
We Broke Free - NZCA LINES La Riviera Inglesa Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70494fb187bc8712c5246eef4e2470ddb899f00324aff811c3bf6b6a84f99270. 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/GBMVH2100300.
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