Igor may refer to: Igor (given name), an East Slavic given name and a list of people with the name Arts, entertainment, and media Igor (character), a stock character Igors (Discworld), a fictional
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 0xeff7599960a1549ec3a17af214c0cb0032639ebbd7427f04ac140bbd413dbf19. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/74028f94-ff26-4c93-a605-e83ed08cbcf2.json and https://artists.proofprofile.net/proofs/artist/74028f94-ff26-4c93-a605-e83ed08cbcf2.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 0x4c67ae7f6988f6f57db282eb4eae61c09bf425c28c6f5544aaa77c9815138060. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/NLC242100559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76bfc3e3b79a36b0001a6f90da4dc9af1a188a78bab39af5fb3f9f18950f8d7c. 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/NLC242100566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d3cfce38aa352b96b8e522464c40b3c9cd7b82aa3bc014b7c0c469a40370269. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/NLC242100563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e609aa7741531da800b446996d17693f9e60ae268fed7588e875f4a0e7e3452. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/NLC242100543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1518a2aad52dd35d802270bd11e258f59a448100ced92e103d53f69d39826a4c. 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/NLC242100465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c67ae7f6988f6f57db282eb4eae61c09bf425c28c6f5544aaa77c9815138060. 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/NLC242100559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e609aa7741531da800b446996d17693f9e60ae268fed7588e875f4a0e7e3452. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/NLC242100543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d93d417c16549b2a9847ea07486947b880a863c9781fcffc62a1cc3b5785c59. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/NLC242100560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1518a2aad52dd35d802270bd11e258f59a448100ced92e103d53f69d39826a4c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NLC242100465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7639a01fc329457e702d559d43f52c356129b27be34235ef48ee5005776c1b04. 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/NLC242100561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e4aee3d5f0420e4ee6fe77dc83aca4d3460bbffa6ff4ec0be4880476b54e0f7. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/NLC242100562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d3cfce38aa352b96b8e522464c40b3c9cd7b82aa3bc014b7c0c469a40370269. 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/NLC242100563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea98c7a1b7e3535e2784cca1fd8020d33f48262eb28dce61b18c018ee9f594e. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/NLC242100564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2643435a5e1f1f95223a3b8a6633766dd57cba1139a8c0d0c01f7b9c6df390a0. 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/NLC242100565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76bfc3e3b79a36b0001a6f90da4dc9af1a188a78bab39af5fb3f9f18950f8d7c. 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/NLC242100566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e800dcb4e13aab6e51e533eab2a30e1f34d836ac41d9939e81e48b29e49464. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NL5CY2500385.