Kako or KAKO may refer to: __NOTOC__ Acronyms KAKO (FM), a radio station licensed to Ada, Oklahoma, United States Colorado Plains Regional Airport (ICAO code), Colorado Plains, Colorado, United Stat
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 0x479604a29f75eb07b1d59525c622f541c6849ae27268058d7c3c17800320ed05. Chain 2 (Bitcoin): anchored in block 953714 (2026-06-15T00:43:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/864d08d8-e8bb-4d41-aaf2-a8097d287b89.json and https://artists.proofprofile.net/proofs/artist/864d08d8-e8bb-4d41-aaf2-a8097d287b89.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 0x0167b4f5349a89988bb99a4ea0c30ce1fcbce2ac19e7a60270b88fdc0cee18d0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US7VG2290044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6738236c838ac29b28b901dcbd795dce449d8c28ccd817a67d6a8785b463709d. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZW9N2238691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a2fe51b87a1f519991c8b877b83978a909b9c42cf2006b9f1524785d4cecff. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/US7VG1876901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0c8da040d82a809136a5d9d5df9731d7ca5ec06336eef33a7f1afff4c9564e1. 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/US7VG2529961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30ae11a92f93001757d91c6b0402ce12b642ef94c2906baa5a0b02e3d030792e. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/QZTPX2431059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe4fa9e226508d57a436f539690b0e65191610ac76d1beeba01486a27a0a41d5. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZNJX2446318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd98a35fbfa8c3266890a40a84f15f45d59ca08e74af485e5cb3a88cb6e44ddf. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/FR2X42406013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7adc959a86bf48f4c548ed2c34d90554d5f2cf7c4113ce6b974567c96e612f5. 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/US7VG2443570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe557115fbdd611ea9154bed37cf3c50580c228b987faedbb75817467a421d40. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/BXX7E2300081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bb581416d956fe2e2ec77015923c1962df926bf676554e0efe65eaa81c3e0a5. 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/BXTJO2100081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x535d331326f0c8389fb74e041d70ecdb1dbb9d7b078ffae25713bc8bb759fc75. 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/QZMZ92143710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d97337ed6c2708246d26348acc778c48c3a8ee001f009ececc0934f0471da9. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/QZHZ32034637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0672e33c195e154dda9b61e5ec4267163a6f9b52124bcc1f21b1444e2033f5c1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/AUXN22161232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56f0d23a28d510ba0a6bd0ef0a69a5f2d6a8a6302f84f843bbe826a4c581a68a. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/AUXN22161236.