The Chisel are an English punk rock band formed in London in 2020. Founded by former Arms Race members Nicholas Sarnella and Charlie "Chubby Charles" Manning-Walker, as well as Cal Graham, the band ha
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 0xfcc1c1f4d5d68cc8520227fd0676891d41fb90cd60d2a0b0f8da6148adf51398. 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/dbc5b6ca-562e-4783-a887-857bd5f0bee3.json and https://artists.proofprofile.net/proofs/artist/dbc5b6ca-562e-4783-a887-857bd5f0bee3.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 0x0f613261c242a5cb305aad3896730ce2b1e181b3c128c9520abdcd7244f40ecf. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GBHLW2001511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c8b5f27fc094a596a553fe0f9a2e2a0da67a6f5e2a8c82296692c68204cd54. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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/GBHLW2001513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69398bb86785c2cc28ddbadd660aca3cc63dc67b0d6e7e41afd280d6619d2830. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:31:57Z), 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/GBHLW2001515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf68c1effa7e2b81ec106bbe4a1acecd1eb9fdae4c1e1620d7f73f7537ca7f688. 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/GBHLW2001512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3612de158f3fb55d2bfb3d659e1cfdf4f488abb7bbebc1081b17eab98e343329. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GBHLW2001514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a0e4f88714dfd7254597ba50fb487191b967b911cd89783938cac676fd6950. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GBHLW2004448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70ef92ff67a3071c6b099de36a4f35b1a7f99fe3067d64500ac7aea4b5f3ff53. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GBHLW2100224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cf2f672bffb42c664e0716861daa5a217e9291eecd87d70760f9309f83f16b6. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBHLW2100226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed81244155a52414a73a62dadc114fd2f0170c37c79e05c71deedd2ae6d063da. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GBHLW2102978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x020e151173db2a2697bc7b6644664730ef6d658836d39ca2f90e59afcb1fe652. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-17T03:33:10Z), 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/GBHLW2102865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c05e36da16778e820e17de2f020bfc1de030b3b612fc34f7975028ff0d55e7. 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/GBHLW2102979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x319088bd4a85a39600a1eff14fb109cae136c8cf46acd8d77b46395aae73c222. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/GBHLW2102981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12986e6e631d460415ab9e2645971652a6027b54f29d327dfa365e6634102924. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T10:38:44Z), 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/GBHLW2102982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x747125b8ab9a4ea1abaf07568972d3edb29474a1e7a1f488dae9e2ee24cf00eb. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GBHLW2102983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5c1a8ec655599e33aefa8c3ce3eaa54397b362f5450346b2930f5458fb51589. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:06:59Z), 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/GBHLW2102985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5099851e90433dab2ad3215f04b4e9be564b67de790e0283d4451bb9d3f4da15. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:35:55Z), 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/GBHLW2102986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed81244155a52414a73a62dadc114fd2f0170c37c79e05c71deedd2ae6d063da. 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/GBHLW2102978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c05e36da16778e820e17de2f020bfc1de030b3b612fc34f7975028ff0d55e7. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GBHLW2102979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x319088bd4a85a39600a1eff14fb109cae136c8cf46acd8d77b46395aae73c222. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T01:52:24Z), 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/GBHLW2102981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12986e6e631d460415ab9e2645971652a6027b54f29d327dfa365e6634102924. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/GBHLW2102982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x747125b8ab9a4ea1abaf07568972d3edb29474a1e7a1f488dae9e2ee24cf00eb. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GBHLW2102983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5c1a8ec655599e33aefa8c3ce3eaa54397b362f5450346b2930f5458fb51589. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/GBHLW2102985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5099851e90433dab2ad3215f04b4e9be564b67de790e0283d4451bb9d3f4da15. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:22:15Z), 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/GBHLW2102986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7dcfa7615347088c1f5e8e8ad789d7615ce29183f30b650503926d5726898ed. 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/GBHLW2102989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9147866265be43c4ac2f373c2fc56e3fa6d6a4c4aa9c559deaf0f83fb81e054. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/USSTT2300144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccffff5fe76ddf5754574f636adc35bbc76272955bd30752328f351660494028. 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/USSTT2300235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd95cab899f90d73eb2740f8e8b97898e77a30a7f267b2ca7093ff7afd3003fb. 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/USSTT2300236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec5f0514e8739ae18b7488e864125b4f42b84cc06a7e71a3253113d3917677df. 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/USSTT2300237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b093c854fdce43871a3b7354e013f183dce7e1563f49b0e61b23b222e75b58. 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/USSTT2300147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e1b8406509e771d13a2772aaa9bc9c377e80582b396046b7d45aae67a57953. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/USSTT2300149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609776ed2db5980fdb7ac583399bb4018427009fa19b75621762bf09cf5d7148. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:12:10Z), 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/USSTT2300154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a1034cd0a552c6e7634542813ffef1c64aeffff7c2a4afbf72c5a0dbacf4e26. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:32:33Z), 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/USSTT2300155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaae77b6e1c6b3fab80a451b9cbd2c38eb56142b8389a460cfb2f892d6b985033. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USSTT2300157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe3fd22cfe6a433d29029015d8ceccb76ffdce07e18c87b89b1a8b7ead892e9. 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/USCGH2329433.