Marcus Lambkin (born 1971), better known by the pseudonym Shit Robot, is an Irish electronic musician and DJ. Career While working as a DJ in New York in 2000, he befriended James Murphy, later of LC
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 0x6ebfd5f9844cf85d9c79c05cccf4222e02a87d8353a77ddb39d2dade3060e1af. 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/fe9937b4-cef1-435c-af38-6810781dc1af.json and https://artists.proofprofile.net/proofs/artist/fe9937b4-cef1-435c-af38-6810781dc1af.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 0xf8d85dad53b40121fcf0d1ea3eab38ccd2d1b190deb1dda5aea4266b81dacfce. 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/US4GE2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44916d3c67213f63af0594abb0c05544720607d983798a7ef3e65bd41fed55fd. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBJX35016065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7286743dcfc499afdd8f22441f320429ac598683614e3e4d689b62834456cf11. 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/US4GE1500098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6934cf929f1f828879425dc4d8d4eb416f34051799a37c3c289625940e3fa13. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US4GE1500101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66bbbdae9464aea75f9cdfb153e7cba29922cf35916ec0ebaf9e10337977fdf. 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/US4GE1300132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x563325b334a2bd51e088bde7db97b8877b078d343a39e8b28aeb4d00b5f1be2c. 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/US4GE1300134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfab5add0b46334f6606cec2169c8c0516c34c356a138be8951563b56fdac4e95. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US4GE1300136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa712e9ad2410ef56d69e40f0c58ccfd0c657a205a9e9f8648f97b22a1167ab41. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US4GE1200049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17d9fcfb274b1df70437fc17c85b83e89b7b362cc10daf72ded22dcf4cf414df. 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/US4GE1300114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ebcde267dbdc65eb678bd6868c0145ef4adf39536f7defdf1184a9f4d14ebfd. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US4GE1000035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f449152f6fd160867c01be99c846b6009d7cf02bfcd1dbfc9ae71fb77692af. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/US4GE1000114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb058f0af8064cfd62136210dcee8bb2706d5120f2acbc6f1008145e7e6b447dd. 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/US4GE1000032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e57745a7aa9fd51c608fe7c6c7c6583358f18720f7abe069b44c0418b128d0. 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/US4GE1000034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ebcde267dbdc65eb678bd6868c0145ef4adf39536f7defdf1184a9f4d14ebfd. 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/US4GE1000035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e00a4433b09c1cbada45c3fdad00e125a50d94faa3a2f20106ba628683344fb. 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/US4GE1000037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6620c6e6980c9792810ea97782bd9fe8bb30ced78451bb5dd0807991cb63e55. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/US4GE1000038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe37310a0660dff5ed1f82c3bda50d952800f18c3428207fa30ddbe0b2bb58994. 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/US4GE1000039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf857f2b61010034167de4aef45b04f1bca09cdde7ba0057a1d4b89c63892b531. 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/US4GE1400152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f639563ba1d7baccfc43d10b7a5dedcc00730f4160548f9dc6caf35376a995a. 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/US4GE1400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dd59b9a82a2f06e1b0fb2e569fbde857c22f9b535faf2967e9fa7682da127f1. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/US4GE1300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a31278ba25bb1a84950505b86094fd7fc0a4e7ab77660ba13d0fa7256e50b6. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/US4GE1300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9caafc86cf035a085fcef48ce30d8f83d1a293b7b4c854278619c875578666c0. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/US4GE1200048.
Simple Things (Work It Out) - Todd Terje Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x990b3296a39f8c105a33a156cd8e2616b3647f86c2cbd269a1ad24a59165a33f. 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/US4GE0900044.
Simple Things (Work It Out) - Serge Santiago Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e6099be4b59d3adca4ca95a523ecbe0b4645f92cd63a8b5adb88b1d9141c4ca. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/US4GE0900045.
City Lounge - The Deep Session (The Finest Music Selection: Deep House, Trip Hop, Downtempo, Cool Tempo, Lounge, Electro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db8c16a909d19523ce413f9470ec27658fd3199562cf1dd0528e6e3a36a7127. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US4GE1300135.
Balance 020 (Mixed By Deetron) [Un-Mixed Version]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa31c2824ec5bc8c3ef6ad51771740b313c8eb9c2690526fdb16005b1e7a27cf4. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US4GE1100054.