Kubi may refer to: People John Kubi, a 1992 Winnipeg municipal election nominee Kwabena Appiah-Kubi, a New Zealand professional footballer who plays as a winger Kubi Indi, a Zimbabwean development
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 0x97a36052b8ef3f2ab051d8417b0cd5a85cde2e1bbf6da8167bc3937a72994031. 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/d9a3328b-5ed7-4338-ac06-e950d1fb76a2.json and https://artists.proofprofile.net/proofs/artist/d9a3328b-5ed7-4338-ac06-e950d1fb76a2.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 0xf0ab32eb05cdef34b5370a41355846f8876d39ae529b5bc23f861334ede32550. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/GBSMU4838078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3decf7b915b62b079e340775246b82da2b51e53c3577c310465ebf6ea68f6368. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QZHZ51922563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21c1371f7efa40d3ff5b940513b6b0391ee9c752cf76c12dd7ec8f76b666db95. 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/QZHZ32082824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a205d0b61d0ad2ed7b68a2b8b3d7e6298b64eeedfc94dd0ee030b785749550. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/CA5KR2186891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e53dc895cceab5abe9ad501169345568d9f8ea24c9d7df87421157a9b5052d0. 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/QZMZ92168474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x300085ef3a8428bb3028a783cc4d1e23737c2afa30f53696ea0c59a405b56565. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/QZMZ92168475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea06e5445cf80e74b6d47d5683a382f9ed530a4365e13dccc8ecd90e27bea4c. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/BKP5A2500040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd38d260009460b3f831210b09cddaf3de9d5d9b4bbac75f2571f4b4481cba635. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/BC2Y12500037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb68d261e58fb02c347c91f70e17b97cb54bebfcc4570b25744f0812965bd847a. 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/BC2Y12500052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c5b429ecfbd9239771bbf3ca8503849a119a0e883f6aa7df30f2237e9be7a0. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/BRUM72501013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b5b05111412944300b335fdc3bc29031e7430fbcdf88036ea30d87209d37f4. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/BC2Y12500103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb185aec8dbc1eca4a4b6a8493d9bd31de3bdd8f24c13a7d675d6e357657467. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/BC2Y12500106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3af9c82dd16b6620a3dcc157ca3baccd39750df7322cad2535b58ad14a57935. 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/QZ5FN2024286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c98c33a8d265e535945d40049547b35579e44702f853330be104e9a562dc4e. 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/QZGLM1983667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x803c7e2e5c803a08a187d58ec5e018bfca73cfac8eeda0dd49131ffbe6ad5d58. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZHZ42135249.