4EVR is a collaborative album by the American DJs ISOxo & Knock2 under the moniker ISOKNOCK. It was released by 88rising on August 1, 2024. It experiments with sounds among tmutiple genres. The EP wa
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 0x19e9a4b8291e9a2b827edcf59c13aed2d963340a0daa220eb6b3c239c7a2a892. 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/e09578ef-2488-47c2-8857-c548e11ded99.json and https://artists.proofprofile.net/proofs/artist/e09578ef-2488-47c2-8857-c548e11ded99.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 0x5fa07dddb2cf30ec72fcc375700344c77d9a32154fbf701528f7958a82567524. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/USZ4V2500051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80717b1e89fe911a106bf3d0d39142e3e3c7964a7bb49e89aa7695137c4a0a2e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USZ4V2500052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f00afd2014aaa320d632b449f7c81a61de5e818892b5d9dfc727ddc19cafd56. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USZ4V2500053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x003c76480d7671587246f034e711b83113ee2e39827f6d6980823c083773e0be. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USZ4V2500055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3580aa88cf4922cc60bb0b44138366b735c7a3420e6f60f306e6b70183aaf59. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/USZ4V2500063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a9a3ea4c1ee865bb6032bdee0dcb0f06450ab2f752164a7b73ff0fd6b5f68fd. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USZ4V2500065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c356c184bf9f5d6109268f0b55384a8a9220d4925906121d915595331a04ffd. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USZ4V2500066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x989d3da25a635163370c83febd204e152d5f0dc4f0aacb76822d6bf56b07bb6a. Chain 2 (Bitcoin): anchored in block 958819 (2026-07-20T04:08:24Z), 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/QZTB62543066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c5420cd5238d6b515a5250a3cf00fcc22024e717b19b5030596ce1d7b9312f5. 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/QZARB1898810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ef79971c589b7d7c9f7850d014bef03ff2e9b7cdac4691f7d246df41ddd6ba. 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/QZHN82129863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff1785a9569c4aff2724959c5bd12a4b23100738e5333de538bdfb9a43b7c0bc. 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/QZK6J2279722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b01a087db4ce2ac1fc3569dcba3c0d4912ce894110163a56548111e255dbe8f. 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/BK4DA2456866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7106ed71fdd4b70c0471a08280d634aa555df657c0cfa4d76e85dc880ced8d0c. 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/QZHNA2207995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71f569214b46f41468a5835d0fee41a71fb417d61cd63582551ebb85f7c9578e. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZ8LD1997011.