No Knife was a band from San Diego, California.Faulkner, Mark (May 26, 1999). "Resourceful No Knife is slicing through traditional rock", The Florida Times-Union. Retrieved March 9, 2013.Nixon, Chris
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 0xdcdb5776f480c8e19dbf86c534c9eb8ff9bdbb4f806decf14e4e4b77f4ca57e5. 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/77ad3415-a76b-41b2-b9b1-5d4a71dabb96.json and https://artists.proofprofile.net/proofs/artist/77ad3415-a76b-41b2-b9b1-5d4a71dabb96.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 0xf448049358bc91d1fd86c2f002e7e36cf34086cf97c24e07f19c6b2ae45491ad. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/USTB30400131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb74466128a310d0a295b1dbd35fd33c2657be76ce53d6b3be8104dd4c17484. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/USTB30400132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ab024b3ffb3b3b378d80408127bf6af7d8271e7707f0d86807d6d8d0f3b6d3. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USTB30400133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f7793f3254ede71822f6a70d0fb0d3ce962e07b999e91f7bd81323097036309. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/USTB30400141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ea9410ff58aed2810d91099e2cae29fe11ae363cbba8a416457fa508347bcc. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USTB30400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd701260fa6959c991bf5bb56a38d96f29be3a08a7a9ab01a7dfff8752c92d55a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USTB30400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0eeee15d59434561f210e76dc5dbb94359d74c3b8fd24279a73f40673e4b371. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USTB30000093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd438fb508ed432c69d65c210722bdfd8db88e21763c9bbd06be54c10edf978c5. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USTB30400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ec81090dd6d98488b0a02fc2df81a8d9602ba451eef47f913f214bf232b9391. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/USTB30400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x456d714566648595b37f73871399a7233f231f02fe1cc82e112c47703c1274d9. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/USTB30400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4f5963e7e1b79d4bb2fd39c78d29f769a5bc66fadee6858d0b356c3957b569. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/USTB30400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b8316ceea0e8c880267dc91b4afecf882e74089785e1e47f9e94803945e622d. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/USBRL0300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4402d89c48e65d182e61e8c92029500f36720e35a389ea77c9387e6a4009704. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/USBRL0300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bafb7d4f3f1b3ae6d929101acc8c1fb1d65a21baef2a0a072771285af3bc751. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/USBRL0300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6b4d72d78cc15c84199315278fa300a6a09f635495a488df64fee9f437c6a7a. 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/USBRL0300026.