The Economic Freedom Fighters (EFF) is a South African communist and black nationalist political party. It was founded by expelled former African National Congress Youth League (ANCYL) president Juliu
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 0xf811789dfb36608da5b481dec2da89d04063fbd22f64cb7972703328b34ebd62. 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/ce228585-3b22-4e7e-b8eb-31ca549e5504.json and https://artists.proofprofile.net/proofs/artist/ce228585-3b22-4e7e-b8eb-31ca549e5504.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 0x96bdadefedab6ca57dd5e35c53373c851b0293647087f3aa5b8664f6832f5f0f. 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/QZS7J2390270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3214741f2c8fdf37daca9b461ef8d267128a0211d6127e029fa2caf3859a514. 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/QZS7J2346675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e6ea0c49a3ab9e2fcb9fef6a7d2d108459cc4ab2ca40c6cb0b00f7eb3baefea. 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/QZS7J2350970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e01c9f36cc70efe73db15512f713a792a9b258070071aa40661e83a14c281b. 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/QZS7J2378945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6b5c6dae80fac39c60a538456f2dc8ff1c500635e3c48bb8325d00a8b16622c. Chain 2 (Bitcoin): anchored in block 957025 (2026-07-07T10:59:31Z), 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/QZS7J2399324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0598387c7d54c07a3ad71da6a32adf1092aabef2386944807ca4c52798e0655. 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/QZS7J2382537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x615dcd4c94c93b42b8ba8b0f311975f30f1373fe134b7b96960f536a872d07ec. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZS7J2311592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa45c86d2411dee4b39f3593ea2ec6bddc3b6852abb9c8cb33760aad24d11700b. 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/QZS7J2345377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05333aa3b740f3c596e8a91c88a9efcc5e1b237869c37b5b9049dad6ae6db9f0. 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/QZS7J2385470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b3da743277b93f8084117fb2f71ed55bc9cb2a62cf792611cad9282a96a9a7b. 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/QZSYP2340257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44d6103c870222ed14178a403ac7753e90e828f7b8a6023ccd5b5b94d833969f. 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/QZS7J2322777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x063509e7494d06994741ede36b8e93875b1af12e0ed7c6ab37349c8b8e73be85. 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/QZSYP2339324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x074104bdc52f86e3f54335d6690300f852da5f16786227da5fc74be006acb702. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/QZS7J2349045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87956bd14b8f226222418379ea32382289b164fcda287a6d58d3b9f2ed85aa08. 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/QZSYP2339821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c6bd549fd02c8dc7bc1cdbaed5bdc85fa7b27291a7f0ac3a5d9869dc0668db3. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/QZS7J2391595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb368855a45bc033b4e2c41a42b6738e9f58876fba97057cdbc4dce95955146b0. 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/QZSYP2318537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f768a897c39b6e5d0fc9a8cea579a58ac6fbedbf6456eb5782763823d5b0709. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/QZS7J2365708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d14f16efad4c795fd62d8cb84eaa9888bf4c0427a20e4a69b034b99147e6fef. 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/QZSYP2346708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bcfa0bd8548f7674b7efdbb16fc825a5a6b4b4f235a1512eef60ef16f873501. 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/QZS7J2308364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d7698f87d92e31a8c02fb4f7275dad47bb5ba8ce4fbfdc1e6b422d2ca1005e3. 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/QZSYP2303569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e6f027aa4c04bdf93b46f01253411b8f235ec301cdcf33c296f6b4feadf678. 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/QZS7J2357613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeddeb7b3935cbff09ffbbf9e16d3e13bb40055efe6cfbcb95f1141f33ed44d73. 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/QZS7J2312668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x268dd1cf35982beba48e245e1fd97f6d5bb581c2032fb21e27e4a10e278a6444. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZS7J2321738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18735c13a0de82b2bba3d84ea5ac06058d7df7c98b809fee6257db5686996160. 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/QZS7J2300764.