HMLTD are a British art punk band from London, formed in 2015. The band currently consists of lead vocalist Henry Spychalski, guitarist Duc Peterman, bassist Nico Mohnblatt, drummer Achilleas Sarantar
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 0xcbf0326cb80c6806bea0f9979f18fdd1fc1ccb2849b55e2ad820a72fa9f86773. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6447de67-ee5f-4db7-8ed3-278045db904c.json and https://artists.proofprofile.net/proofs/artist/6447de67-ee5f-4db7-8ed3-278045db904c.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 0xe021cd3cfc0356681f0b11ce0768e6b92fa79af9bc4113d3cc5f7c2927ceaacc. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GB9TP1501023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafdfc9c73fc5bff3a97ee23a9b8496fbba9767d00bf3085f46982005a837e283. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/GBARL1700226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x552b6b189cd53d26d8704fd4eb7ea39614c69b77871c4b59b464285c645fb186. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QM6P41731541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x552b6b189cd53d26d8704fd4eb7ea39614c69b77871c4b59b464285c645fb186. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QM6P41731541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e52773dcf8967898a6a68960a3b4a674a0a0e338403b4e019a6e92abab128a. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/GBARL1800572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e0236c8d61d5db2fa7e883aa4860086fe4976a5f7a45e9640863378691bb22. 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/GBARL1701738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e52773dcf8967898a6a68960a3b4a674a0a0e338403b4e019a6e92abab128a. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/GBARL1800572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e0236c8d61d5db2fa7e883aa4860086fe4976a5f7a45e9640863378691bb22. 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/GBARL1701738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f27d1b0439ed7438b67347ab22c642f089bc2e246a85d70cfd1898ee9686a65. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/GBARL1800573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6ff308fb7c128a8df59594c7d65309236c8c94e3e038a7a2b5c7e2ce673f2c4. 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/GBARL1800574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d4596725ffd9d79dccb8bdf5f304685a79c64744f726c12b3163ca865dacb6b. 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/GBJET1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a01ccf2ab218679c3a891a460ea36ec8b1ae3915b128f0325fcce4c7b32df4e. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/GBJET1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dda093989784ebf14348f34a06a15d6d30de97aa3ed8264a08ab8120772f425. 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/GBJET1900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2c582eba3f1fe54ff6adbb51051651605def60ff596a89f31d9c7f992b122f1. 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/GBJET1900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6dc2bb7f008006fb9a2124d3a39d546890cd1c9af24d1cd361903752fa3843. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/GBJET1900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3cdfb8db6d9004479ece20256195e377f15abd4bb49242cf16c23c473414b49. 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/GBJET1900015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d4596725ffd9d79dccb8bdf5f304685a79c64744f726c12b3163ca865dacb6b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBJET1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a01ccf2ab218679c3a891a460ea36ec8b1ae3915b128f0325fcce4c7b32df4e. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/GBJET1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dda093989784ebf14348f34a06a15d6d30de97aa3ed8264a08ab8120772f425. 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/GBJET1900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2c582eba3f1fe54ff6adbb51051651605def60ff596a89f31d9c7f992b122f1. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/GBJET1900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6dc2bb7f008006fb9a2124d3a39d546890cd1c9af24d1cd361903752fa3843. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/GBJET1900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcf6eba5cdf390f3c018b6194b35ca9a4b99bd84c8d89a5dcf0776c19d91db3e. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:49:41Z), 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/GBJET1900013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3cdfb8db6d9004479ece20256195e377f15abd4bb49242cf16c23c473414b49. 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/GBJET1900015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d000085b4ba5a46ba541b077615a3addbb461178909eb1755aac2e041f9ebdd. 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/GBJET2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b282bc9fd261d2b7b09eb0d60695fb69bb565e411b97f8f924dc45a70e3f352. 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/GBJET2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba5d83bff527225a3b740e92165d3d82c867aecc8c6a5f0365e603e505eb30d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBJET2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc1bb532cd1a1d3b871b67bcc7fdfa93f81b74f58f3261920e909749f76fed8d. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/GBJET2200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d9de7dcf86c863d60d761654c0f18406b116c39e98357db618f50ddb9079d5. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/GBJET2200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd02011ea285dacc3f5ba08e80ee3a9356dcb1922beef5e6d3f92e689355db2ac. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GBJET2200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e852b90a8414291d6f5210429dda97d5f7215a177999018e116275b29e1fb6. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/GBJET2200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d25d7e5f4e35a1bcbade92be454dea93bcd128933ed5f3737b616c3f8459ba7. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/GBJET2200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x422ec8d1545a414d8566451b3aa7912294213ead6788b5d8aa110057b72112d9. 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/GBJET2200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a5fcff7e84accda49e458cb9ac5934366a426d4e72bacfaac4c84ae59c0aafc. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/GBJET2200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b282bc9fd261d2b7b09eb0d60695fb69bb565e411b97f8f924dc45a70e3f352. 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/GBJET2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba5d83bff527225a3b740e92165d3d82c867aecc8c6a5f0365e603e505eb30d. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GBJET2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc1bb532cd1a1d3b871b67bcc7fdfa93f81b74f58f3261920e909749f76fed8d. 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/GBJET2200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d9de7dcf86c863d60d761654c0f18406b116c39e98357db618f50ddb9079d5. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/GBJET2200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd02011ea285dacc3f5ba08e80ee3a9356dcb1922beef5e6d3f92e689355db2ac. 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/GBJET2200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e852b90a8414291d6f5210429dda97d5f7215a177999018e116275b29e1fb6. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:05:09Z), 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/GBJET2200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d25d7e5f4e35a1bcbade92be454dea93bcd128933ed5f3737b616c3f8459ba7. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/GBJET2200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x422ec8d1545a414d8566451b3aa7912294213ead6788b5d8aa110057b72112d9. 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/GBJET2200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a5fcff7e84accda49e458cb9ac5934366a426d4e72bacfaac4c84ae59c0aafc. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:33:08Z), 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/GBJET2200017.