Onefour (stylised in all caps) are an Australian drill and rap group originating from the Western Sydney suburb of Mount Druitt. They are regarded by many as the pioneers of drill music in Australia,
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 0x1e19878a827bf432444234d944f495d05c383885e226c4786189f6f179693ced. 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/3aeff633-41ba-41cc-95dd-73f502e795e2.json and https://artists.proofprofile.net/proofs/artist/3aeff633-41ba-41cc-95dd-73f502e795e2.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 0xd014bc4302df5c31bab083ccb1d74af4cdb03ee38b1e5936c2a457f4994bcee4. 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/AUBEC2060039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d20734c22633bd8ad07cf8f05baf54a53e7d5e9b579d7e6b376dbc440f90f60. 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/AUBEC2060073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x030b252085d65e79c4e0459ad1dafa2db474bb19a630844d947de70340440bad. 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/TCAEZ2082431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d548adb2c7b736651d4c6ad5dd7a25d4e7ae2eafa4304aeae4d22eb0ada09fe. 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/AUBEC2060066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2837ff8510127f2e10fc669c4bf28a04886c305274fec66f79b23643b498aa3d. 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/AUBEC2060067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2a9451b55d121642ee5d28fc32916080c27565fe23a649be9d6027b7f665588. 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/AUBEC2060068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b54ee4876ce850f2abbcc021b26d6b8d259734bee17758e7515bd271f5bec74. 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/AUBEC2060069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3960432301d946c7108a069e12fdd12f66cfeabb3fdd175d9ad72d6ee20efc8c. 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/AUBEC2060070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeddd526af40e264e5340659325f4bf75e83a8844b88885beefb17c78613f2bad. 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/AUBEC2060071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd014bc4302df5c31bab083ccb1d74af4cdb03ee38b1e5936c2a457f4994bcee4. 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/AUBEC2060039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x525f6ace848c4b4adb367b322a11b9595a8ec3119300d0227efde2f6b8ddce54. 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/QM7282417309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca9f3d62afcc37b4695ff28c6fb10f8e26830320ff59590b7298aca45a3642f. 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/QM6N22431854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb4cb8d0302d13173aa9a298c7708bc2c5f74c1687403db568c11c05b1de7f2b. 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/QMFMG2323897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cd61c04672b34bf76b934a54b93d02974ec5584c461d780c11aa640712d7e96. 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/AUBEC2301884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3370b458a5d5d4a8218f89bd23b38cb1ecf2124f81365979e8561c0f8f590250. 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/AUBEC2180747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec4785b98602e9a0c2107dd0d2bc141d9eaec9ee17e3fe400faf569ba13c3667. 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/AUBEC2177277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff0bf7133f71d88c07fbc424ec232c3bb9dfd828ceec74d017bb19307cd1d2f5. 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/AUBEC2169680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3265f681eba4baa36c7dc830a97c315d11622eedd3dc2f1625ed04630869a70. 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/AUBEC2082585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1a2e2120e2ab683337b3a57ac7c559c655113bb340c43945b3f520f430f710. 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/AUBEC2119558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d89f67e264e4fa9ef7959e5eae56536728620782674ca893b2e129767f220e. 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/AUBEC2106308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef6a4a8f0a0c5a72b31160357452482e6d8864822abed12d6abda773e5f7bcd5. 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/QMFME2009696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeddd526af40e264e5340659325f4bf75e83a8844b88885beefb17c78613f2bad. 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/AUBEC2060071.
Bando Diaries (Remix) [feat. ONEFOUR, Kekra, Noizy & DIVINE]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ede988df94acaa326172fafaddc6209cf3a00ea0fe7277f97e444710ae2b3fd. 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/GBAYE2000997.
Ain't It Different (feat. AJ Tracey, Stormzy & ONEFOUR)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb18fe6f4866bfa33e532857689648473fca8103ef0a276146b53a3ddb359faaf. 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/GBARL2001213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8a7d41afa1bc7186d476f7ccfb9c0275dbd4949e802bc7b42e77f16368d9476. 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/AUNE32000096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7036b37d2ebcdb9e7f7786274f69aa8b844f794397d593babbc1349dcaff7e. 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/TCAES2077204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb981873a8e91891e5a718cc51aa731e2a1b2a75750545cf25a64193b780fa74d. 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/TCAEQ2009415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81c8a8ceea75a02285e96342b46efe1de4706cd5b704e4bb04229a9b32206414. 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/US23A1501668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db2648cee7b8fd31e5d4fbd93ed5038f7aa4775070ae0c0607bccc2d37de950. 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/TCAEM1994469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef75e24b46b2a3f060e338bdb87fefe0fcd7bc79083fb9fe392bba4cf74003e5. 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/TCAEL1967101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdecf6e52227209f546c08dba9412a427861ab9ac62061cd1ea7da8afbed80f6e. 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/TCAEJ1994464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafa46a3daec2a3b29dfdc07c258bac85c3f426ee3430d1ef748fecf861790ca6. 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/TCAEE1922246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d4a49e1e0ba48629010cf220a067a864e29d1cd2be5c01a0efd802a73b430b. 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/TCAEG1938401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9ed3726723abb433438872e6ab30a2e03da66fd65511ae639768193702e3554. 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/TCAED1903924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c281275d0cfc5a13ac85fca0ee52180f0920e4af5e68fcb4f58c5be58b61a24. 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/TCAED1903788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d6daef53a62179660153bfc93f47844d45bda661ea08289246b456ea8375936. 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/TCAEC1997055.
Aussie Freaks (feat. ONEFOUR & Fivio Foreign)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05e661989b11718f8a2b95c028f1a78af0031b0ba91a13812882614c7c004390. 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/USRC12003310.