London Grammar are an English indie pop band formed in Nottingham in 2009. The band consists of Hannah Reid, Dan Rothman, and Dominic "Dot" Major. Their debut extended play, Metal & Dust, was released
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 0xdbdf5a8454dfbfb8515a6703bd7ddc1d4931cf9d7d1409f1c4eda130983853bb. 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/bf299b60-f766-4718-a81d-39da1ac5330f.json and https://artists.proofprofile.net/proofs/artist/bf299b60-f766-4718-a81d-39da1ac5330f.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 0x7b98809c3617aa28c6c61d1f4b0ea8d0554aee73266ccc7ba409ef2745d5702e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBUM72306154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89058ff121b15e8b3db9025f266060ad88a4d87f50bc229a2de22aef0736f939. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBUM71302630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6590b903680346e1931b9dee0babb6f6954ac77179656972228b48164954ed86. 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/GBCEN2300101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a362630d10a06ad30fe4c16ae9afd516e764830b29823042000e46561c7dbff. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/AUFF01900195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1debb1a95f6a671f64b989b669d5a76201c9e6709be2d6ed19e30aa2071e25e6. 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/AUFF01900132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf53bbae05ea61a1dfcf44771638aa4a92d466256e4c6c7af38cc70d9b8f87f4c. 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/GBCEN2300112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x919e9f4de4f966ba75c49866e3d3029e1e4450c2777e8da8d6ec08f15000c05a. 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/GBCEN2000100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c4ae4a20bf9591887798883b27aa25a56193bb88277cbf100f7080206fb53b. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/GBCEN2000101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6590b903680346e1931b9dee0babb6f6954ac77179656972228b48164954ed86. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBCEN2300101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x528e45282e0ca262550bb15c07f5523cc701909d25d2d167654bfcf9cbda6b79. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBCEN2300100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd037cabdcb2a4ea4d943a1a8c4609b9d0680641558f93aa426a8b7813a2d7f0d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/AUFF01900133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89058ff121b15e8b3db9025f266060ad88a4d87f50bc229a2de22aef0736f939. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBUM71302630.
Help Me Lose My Mind - Paul Woolford Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef20f25b7361b134f18dc50c0b9c8e0e4e0c1a656c2c26b73e9865b59ce84178. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBUM71306413.
Help Me Lose My Mind - Larry Heard Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea427fd49a337720509efe2a7d278019c33ea7438d8322645ba95599b925c19. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBUM71308627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aafc53413b492fec4e28a8046a1056778c3ad512dc3e1f6aa221af662f55cca. 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/GBUM71308631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b251ab8dffadf37602a0106680414c05dc718d351aa340f23ccdef634cd2d51. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR6P12300510.