Marmozets are an English rock band from Bingley, West Yorkshire. Formed in 2007,Leeds Music Scene Marmozets formed in 2007, Leeds Music Scene, 21 March 2015 the band consists of Rebecca "Becca" Bottom
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 0x4ba74b501ac7b7180d14e9228669256bc7fcf4be2f3b06fe772687e4a92f8b31. 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/490e54ea-3010-4595-a9ac-4c009fc2fe5b.json and https://artists.proofprofile.net/proofs/artist/490e54ea-3010-4595-a9ac-4c009fc2fe5b.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 0x5fb427c896d5e8e992236021a21fe25a56088fc238d93538b0aaa40676cb0226. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/GBPVV1200832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9599223308e82ff3ec14a637d15d96d20220ebe64630f602a82a4a645338716c. 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/GBPVV1200834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41f3ef424132ceadb8990af63fb4d40f61b44d818e4e234c0b21d7671a01a8ac. 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/NLA321393081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe3b89a2e55eed15178cf8aa295816c6929f0ddd617df8097e5584bdd985d7f. 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/NLA321400316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dbcd04c205c5f279d1dc80578d4ca0d9ab13bcd68f6472632534a27e52c847c. 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/NLA321400317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf64bdd02de17cf345f3c6e5cf8bbb05e85b57a97738e70a56e5c0c521e438aeb. 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/NLA321400318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf017dbc236fdd8609adc64d4c96acfac958399e85e4640dfa50bc7b0022acacb. 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/NLA321400320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b8f5c35c822f52026a651f7d35b77382ad3bcd86fd1f31bb1bea19022678ff3. 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/NLA321400321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6853ebdba86aa7dc006d41e9e8b1f97c16f6a4e2c8f189dc4078e93b493d9976. 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/NLA321400323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe3b89a2e55eed15178cf8aa295816c6929f0ddd617df8097e5584bdd985d7f. 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/NLA321400316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dbcd04c205c5f279d1dc80578d4ca0d9ab13bcd68f6472632534a27e52c847c. 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/NLA321400317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf017dbc236fdd8609adc64d4c96acfac958399e85e4640dfa50bc7b0022acacb. 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/NLA321400320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b8f5c35c822f52026a651f7d35b77382ad3bcd86fd1f31bb1bea19022678ff3. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/NLA321400321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfab7c7ee3145a289a77817eb2281b2d1b77fdbd85e726bf24c5b7ca692eed491. 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/NLA321400315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe3b89a2e55eed15178cf8aa295816c6929f0ddd617df8097e5584bdd985d7f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/NLA321400316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dbcd04c205c5f279d1dc80578d4ca0d9ab13bcd68f6472632534a27e52c847c. 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/NLA321400317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf64bdd02de17cf345f3c6e5cf8bbb05e85b57a97738e70a56e5c0c521e438aeb. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/NLA321400318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e68e92f260fa5369498d0f74bc9d9b2f08af7bc49d2b346615c471c5ddf821. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/NLA321400319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf017dbc236fdd8609adc64d4c96acfac958399e85e4640dfa50bc7b0022acacb. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/NLA321400320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b8f5c35c822f52026a651f7d35b77382ad3bcd86fd1f31bb1bea19022678ff3. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/NLA321400321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6853ebdba86aa7dc006d41e9e8b1f97c16f6a4e2c8f189dc4078e93b493d9976. 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/NLA321400323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4126e7e5a6204594404dca8d65a487081e67e153a92a7a267cfe8f5fc34d2911. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T07:27:32Z), 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/NLA321700282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefdf59800a6ff84d7a1a1617b8fc4ada287b8e019cf1ee1fe50cabe8244fa495. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/NLA321700290.