K1, K.I, K01, K 1 or K-1 can refer to: Geography K1, another name for Masherbrum, a mountain in the Karakoram range in Pakistan Kōnāhuanui 1, a mountain in Oahu, Hawaii K1, a small town to north o
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 0x917e56a09410953c53b62b790bfc75b6fa35a190eebfe392d8463a36f6dc4cb6. 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/73ae4a03-0cf0-45fb-aef4-51de83bf378f.json and https://artists.proofprofile.net/proofs/artist/73ae4a03-0cf0-45fb-aef4-51de83bf378f.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 0x60279dc4570d5f1f674663daac68452790e05b322b49ed38ac9c56271c0f580f. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZHN62186073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b4250a2c1cbc4aa3cbabe632135b676028464062112c43c3518886e0f21db7e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZNWR2122768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b9cccf9639e5b59cc4d49662dce85c57ffb7a2b09fa8a4bd53c6d9823f41af. 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/QZFZ62228419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab45ce0e6f123776a40492877ea87fb161fe4e32d4f5de4bc983ca8acf4a437a. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/QZS632290448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddb5395c79620dcfada6d4984ab8949a44cba5dc7b042841d99140276f7f8f32. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZS632318850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22744240d9e094c814dc4955d9c999ddfad5d30845e46bf063122275a0976ec6. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:13:28Z), 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/QZMHL2359358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e666b421ffe4bfc4a0a2812a906b7c439f583ed5020a163d0960c7a44f01e6. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:16:49Z), 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/QZMHN2355721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc22e24beaf8d1e34fbd7763279ac4fe11d336e472fc8108a8afad48034c91aaf. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:38:54Z), 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/QZS652384344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06295917e7ecbb02fd3cecbab3123186e15253fdf673db7ba4583e767fa7cad8. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QZTB62366006.