Light This City is an American melodic death metal band from the Bay Area of San Francisco, that has been active from 2002. The band is notable for the aggressive vocal approach of frontwoman Laura Ni
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 0x44833317f2ed2eba501f71614d4ed05a96982a9e22b90f164ede25627df978e4. 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/d180edc9-da91-4517-8e75-a6b182fd7d42.json and https://artists.proofprofile.net/proofs/artist/d180edc9-da91-4517-8e75-a6b182fd7d42.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 0x7977c7ce2584d39fc37448936019a71ce0e34e5ae1bb9302ec210df84d857481. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/USRZR0502101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x221cc112dbf92109636f1850aac65e972f5ed3d2e98708f0cfb97146ccee9c7e. 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/USRZR0603701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ffa073bf96fe63ac54ead269cfa05924d5293e83db373d93a0f899af415a68. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/USRZR0603702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fa8f3a04dec9f1667e04aa8b6ef29684a0b2d894e47b53b0231b7e30dcafb73. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/USRZR0603704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd39e1d1ab84b75614eb30433aa14fa579635122351cae593d0862b20ede6c35. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/USRZR0603706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce519dfe88912cd38ee46190741547aab1d7babbe93b80fb0c845796e65dbe5. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/USRZR0603707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4824cbe461500b60ad6e8dc668568e2e2c49bc8ffac945f984907d8a7f97669a. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T09:08:06Z), 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/USRZR0603708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a7918ca0cd42a198646937bc09d06a4f9a236e6929c215d1d1a7785389629bb. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/USRZR0603710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c4ade8792810d86b32fcbfd0c3f39ce616f768bcb9ca45fc68590eec562f91. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USRZR0806801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c15bad25029b7b7a0e92548709d5e9df669cff57b67766353237bdc0719e50. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T05:43:55Z), 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/USRZR0806803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72ac04d69a502301e10d521ce64f710bdd550c86a8eccfac72f47afcce7cf60. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T04:55:29Z), 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/USRZR0806804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c0f84bb57dc7e2176c4f54320277a71d4ac1c5a37004897c425782eb77b846. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USRZR0806809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb67dc2cb6f5e13acfe02addf0b22c9502c8290df09e7e3d1196356ef523567. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/USDY41845181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba66fd572931abd91a323ac0bbadad5bb15b3465512377512f251b5eefb0f24. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USDY41845182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8acf3fba3cf3e410f7b01d5d508063c55934cee600ffeed41d23fe42057742a. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USDY41845183.