Thomas Russell Jenkinson (born 17 January 1975), known professionally as Squarepusher, is an English electronic musician, record producer, bassist, multi-instrumentalist and DJ. His music spans severa
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 0x9bcf306f34080da26a2c1eb63b7fea40591b387eadcd5eb98f3ea6c0c46938f7. 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/a27b2f86-f837-47b1-9c91-e5abf8343c33.json and https://artists.proofprofile.net/proofs/artist/a27b2f86-f837-47b1-9c91-e5abf8343c33.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 0x72d9e4675bc7c4c6e1b7da188b0008fce21ec9bb68d5f0e685a4207d98e575b0. 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/GBBPW1900254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc53d21067375c1e8cc9255d517315d81dc12b296c6481c6cdc9ab52564200fb. 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/GBBPW1200051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a84c3ba522296c389d888ea24212bb4432c751df47d477ef944efbd4eda6c4f. 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/GBBPW1000073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x417a06522ee45922277cf889f39d9bd18be53c97d516627a19967c5b9762196c. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBBPW1000076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd788555b6dcd356a7373a7c7b15918f7b1c28b19b2c78744bdc1ae7dba31e3d2. 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/GBBPW1000080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d45478248b146974e698f6c9d3b7bedcc30882d124574adcdc5e6daa5386d1. 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/GBBPW0600074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e7e2ca875e4ed36ebc37ea609ef42cb30d6ae78d98234fe740a6591d61925b. 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/GBBPW0600077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a599110618a74ff021a68b1760e3616b48a9f2be3512e8fd43d43a7d6675d5c. 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/GBBPW0200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b469c569d72992bb746b08576243c827259a8ceeb9267973e4300442be3688. 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/GBBPW0100049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7431ddcb36b54cdc632fedc16977be746b9e28798d05be25ac07fb2236e481b. 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/GBBPW0100050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79338b3776ff62393a7f4d0bd44250ad549f95bbebf8ef2ed9e3f9c10c525005. 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/GBBPW0100051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x692b16ed75f39f800dd5cba958cb2fa6efa73ca6bfa434adc421e931f735e1f8. 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/GBBPW0100052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c6ea1023379d7348299c6b56f5b0039a5733a5e92cf0b667e69d9a42d5443c. 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/GBBPW0100053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x651832791e01f293659d85f5178465c4f533b3f96bd01983905e32fb1414aae2. 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/GBBPW0100054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe67102165b8cca389c76a749077de3ea731525f2e52149a668927d3924956a3c. 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/GBBPW0100055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf89402bf7ff29dbcb40997be7ba148c5f55cad8ade0d51d26549ef1e354d9c1. 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/GBBPW0100056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d4be35e193e48cc9625d93da47e7c2725e4d4a7bbdf0b0272f2575338ad645b. 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/GBBPW0100057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d34b9ef3c775cc137852c1a0c98ddb9ca4e3dd723fd4bad7410917d557f7e8. 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/GBBPW0100076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d2ea9ed54fff75535ba16b9e80822240552da5d27454441356ac17aa13e87dc. 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/GBBPW9900031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc38ec7e017e2313a8fe42df4f0f0ad844af1daae3d779d397a4580fdfaabdd. 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/GBBPW9700061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e43794179ad5c13f96eda744643f927ea86968ab34317f943398dcbc76908b. 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/GBBPW9700064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb45755cb63e544a537ef53c389a8f7ccd97aacd0b9ab3922434f21161b65be62. 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/GBBPW9700033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x185ca033a9c4f496f5521bd038b8a37034014ac0cdfd9b48c4d5639497658553. 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/GBBPW9700034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b0cf5d68c5c10fceb7cadee5fcec9c47a24ad9eb617c620fd12fd0a9a60fbc. 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/GBBPW9700035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1986a4eb36c7e1fe54d481c05a020ca912dc51bc5df32e4469dbf0a2bbd2cd99. 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/GBBPW9700036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6d06524d117e4a593c3139d47956f87b7ac6e56da2d20c21deb19f9e327e47a. 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/GBBPW9700037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9dff51d9d106c7cd5e9872bd9e8a5d889e4839116dc0580a3c455aefbbbb0f8. 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/GBBPW9700038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc295b5633b32315c1ab67460f0fa58e25ff5ed46839d0e653981c83d6e028b21. 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/GBBPW9700039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f4ce97a3e79501ee474413d1b5de5c064c0dd68285157e761367ca20acea0e9. 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/GBBPW9700040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d9c2f878b4e289605fd2f70bdb5b241d1ff91648e2bdd43b9573834a214f2b8. 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/GBBPW9700025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x593754afc3d91426663ce0b8d432f99e0c8a587647607fdad0fb7e93caf106de. 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/GBBPW9700041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a22863eb6ecf3dbf2a9e921a25af087ed34c5976c49782d6a949fd125f12269. 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/GBBPW2100084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdb3ae121c9aee130b9049f417d01d724de761b58af9c1a5ea6d17523d21cd06. 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/GBBPW2100085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ad772a4ba8bef3a64b7a0fee50adbf3e98ef90834717fe30012d16671c2204e. 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/GBBPW2100086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeeb7c4f9c45fdac2cffa0308df8bd0fb1bcf5badac8fe7dcd4337bf3af7dc92. 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/GBBPW2100087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x050b073b36e6ce8dfdd61699195483d91b4663b258106b4637c3557809e4acd0. 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/GBBPW2100088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6924422ea29ceab0a5ee007a5eafcd969280778aa8ed0c644e8ca19ab85b450. 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/GBBPW2100091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcecdd3342d79c1314637e6c9b7cbb2c6968de9690994536e121e0c26ec623c2b. 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/GBBPW2100093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcabc01d7ec9e4828fbc74b1ea34becf20f578a9b7f250aaa3913b3d1b7b9d1c0. 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/GBBPW2000019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcae27e4fd877cdf27c76d7748043e5564ac546a3b6823d19df8feeb6738564d7. 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/GBBPW2000030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6f72ac776fed240bd68332534749e7ec23179fc7f05fb3aaac7732c22b45fe. 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/GBBPW1400041.