Jack Revill (11 January 1986 – 12 October 2024), better known as Jackmaster, was a Scottish DJ and record producer. He co-founded the Glasgow-based record label and club night Numbers as well as Wireb
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 0x20313b50a2a6c56b9bc435d1e28277131395ac895654054b53e122fb0d7a705b. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f32b3d4c-60c0-4e64-b72e-2aea139d60e0.json and https://artists.proofprofile.net/proofs/artist/f32b3d4c-60c0-4e64-b72e-2aea139d60e0.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 0x244fb5ffd31c81716006ed3e0a7cb352c2dcaecb4e4b5ba752e4a2738bb29860. 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/DEG931691596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c11744ee227ea3c36ed28d14c85e06bda5c78baca23d17efef18b2bd49736f. 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/DEG931691597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92def482b179328fb1a20b3334e1d5c893e6d065b91bc0019c4be5fb1543df5b. 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/DEG931691598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8628fc5643b0b3d018ad0a2c704d974d1db3fff7149e0c4cef1fc93e0366004. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEG931691600.
I Am Running All My Drum Machines At Once And Dancing - mixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21b18654b6d3208e47ca32525685d873c1c6fe97537ddbd19e80da7798e9be65. 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/DEG931691601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ed6415ad0c0a89cd88dc9a17ba9b262c0b4072ad5f550a283739f418916032. 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/DEG931691603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a280fbd1e9d99b283a2f88debd79cf7f0a249d4f61e370f03aed2dc5838bdf8. 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/DEG931691608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb158456ae65bef26c205d4fa575572a4c8db7a65e3b5119409f68dd941fba12a. 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/DEG931691609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf06da316867a7cd0dc2139ec1d5157d00f60e5adaf3cd627a8dbd7bf481d6b2c. 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/DEG931691612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f977f5eb9b1f2d5acd90b8abf700821678055b770fd03f3fb59d39252efd269. 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/DEG931691615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddeff8bd21e5809467e3e6ac40b6ec0469f8ffbd079ff855129d04e52b402fea. 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/DEG931691616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f138821a32574d0d58f6f4fc9b0c50e43e9d980951779c7c9ae859ae0910118. 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/DEG931691618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb3c225e9092adff84ca90eef68240db2054ddb1a822d76809883e4bf9622eca. 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/GBJX32257004.
The Attention Deficit Track - Terrace Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8ee9fe399a5da84965450032c4a96f4ef4c170fccc8ebae28d95e9ffb944cd5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBJX32257005.
The Attention Deficit Track - Terrace Mix (Mixed)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb3c225e9092adff84ca90eef68240db2054ddb1a822d76809883e4bf9622eca. 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/GBJX32257004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8ee9fe399a5da84965450032c4a96f4ef4c170fccc8ebae28d95e9ffb944cd5. 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/GBJX32257005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa73f20f7b972e5bbb22b20902fe39d47e806ec023d334b0b0dcf40416386cae2. 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/GBJX32257006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec8b20139029fdac1bcf854af076c4ce953bfeb873adbea3e0c178d48be716eb. 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/GBJX32257007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58fbacbf416e3e58ef195af6a52f13459b2faf9f3434f4cf1e3b687abfe547ad. 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/QMFME2369740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b1f97ceb618b7b1c62af53a621d0a84414ca304a5095af2df0902cd71ccf571. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QM4TW2475935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd112489da9d467f7114f0b82c5784021b0509b227665a8d620d4edb83a369c59. 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/GB7NR2430901.
Don't You Want My Lovin' - Mike Dunn's 'BlackBall 303' Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f5c1c02de9612484273c0a1ba7ffe4c90d33870b3a1037737633e7fdb262156. 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/GB7NR2430903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d18d91d70115f6e77b64cfbba2892697033ae3f99c9551155dbffc74364adc. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T16:32:01Z), 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/GB7NR2430905.
Tuk Tuk (feat. ÄTNA) (Jackmaster & Skream Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x841aad131625cc23b273ec01f2ac3c0099bebbe8ee28ba3dca056a4dacd35cae. 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/DELV42200665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x841aad131625cc23b273ec01f2ac3c0099bebbe8ee28ba3dca056a4dacd35cae. 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/DELV42200665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a84deed5f444e94983d7ebb20ba5dd43008920db27e7d841201a2d31f7bc7c. 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/NL8RL2412906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d98725680ff97a0d8cc7f521c383f6dc2b87dd43805090c75befec3db7ce875. 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/NL8RL2412907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a84deed5f444e94983d7ebb20ba5dd43008920db27e7d841201a2d31f7bc7c. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/NL8RL2412906.