Igi or IGI may refer to: Organisations Industrial and General Insurance Company, based in Nigeria with subsidiaries in Uganda and Rwanda Innovative Genomics Institute, founded by Jennifer Doudna I
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 0x642a9ab9952cd26dd6bb145c9f9ecd90f994a625cf9492ec05fdc0672f45c439. Chain 2 (Bitcoin): anchored in block 953620 (2026-06-14T09:36:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1f0396eb-67e1-4fee-bd5f-153fed0f3d00.json and https://artists.proofprofile.net/proofs/artist/1f0396eb-67e1-4fee-bd5f-153fed0f3d00.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 0x6ad7393038b6d17a06557e46d50bccaf24f127d816fe50954d6c5dda4ff8e671. 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/ITIWE2100983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf27f991b98edb31853d0bd45db97093a7521586101ce3cb477278442d4c137d. 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/QZTB32333139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa91bbc608f526d97d6fcf0287fc90aaddba40cf9cf1f5771e1e2b0c5fffd3fa5. 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/ITJMO2300044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d23c32c3c2f2642be53f2d1c51028bcf90da67f11649d7719f51a086f49555e. 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/ITJMO2300045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5997e21d61e9e4faba53b9724808ca6994aba700f41f4c99a2f6e52c85f30f73. 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/ITJMO2300046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6f014e903bc5a56f1b34bf5161b5651b20f9616c726b4cdc7efdfa5b792f91. 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/ITJMO2300047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x894becd74c30ec66ac1cde081e56c4ece2074d1219365c276bd46f6044e33376. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/ITJMO2200053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93aec6880d3355b7891965c96be7c258340b465eec44431c554f524559dcec15. 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/ITJMO2200060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e87c0cc56d676117f8bd69e38e39dc7fcbcd2fc5b9b557c2388387c23b58851. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/ITJMO2200061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x894becd74c30ec66ac1cde081e56c4ece2074d1219365c276bd46f6044e33376. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/ITJMO2200053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd49df37bdfbd78074718636d9d25a8b29bdcb5c3c8d10a25b8e2786a7bb21615. 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/ITJMO2200038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b6a8d5bbf530c25ec9b53dd2ff3e9c3963188721c6c0b38cb7acb1c44803a60. 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/ITJMO2200037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0cf17d6df7a780a1953fa211e51ef2d34c762854302ad9006e45d49e2c95432. 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/ITJMO2200025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa32d6b47e8263bf49e019f24fdd2bec7f5f274aa0a0642445312350bd628041c. Chain 2 (Bitcoin): anchored in block 960349 (2026-07-31T05:23:41Z), 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/ITIWE2101270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f9b838e3554ef996fea8819fa708bd45056c5fce3e91d092d1c3dafd75bc91a. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/ITIWE2101271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe346139a0584e70be2f9c2db819139bb4e5144fffafa398fd138858daeb937d. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/ITIWE2101238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a98b72ebfb9f74de5e75ee0139f4427650d714f856a316aa917f62514a27ca. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/ITIWE2101107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2569117a18ca1bd6909f1e38013f17373ca401326e8dae1d66c718072555f48c. 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/QZK6P2188478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf59ba860aa3b8a899f84456021bf7a42dd1ae1fbb22022a7d12ca8922dfe9e20. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/QZES82190249.