Kord may refer to: ASV Kord, a Russian anti-materiel rifle O'Hare International Airport, with ICAO airport code KORD The Kord machine gun Kord (Greyhawk), a fictional deity in the Dungeons & Dragons
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 0xb87811e446ef7864194058e29e2d5105c97bbe0e718bcbb54037c0615f64578c. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/06a45d8f-95cd-4f85-a677-93ec9527ae4b.json and https://artists.proofprofile.net/proofs/artist/06a45d8f-95cd-4f85-a677-93ec9527ae4b.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 0xf9814bd291a7bfe8be52066350ab3cd85f872bcaf6302fd334dc1b7d072aefbd. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/USL4R2132876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37491e2b605e16185cea46088ff6568b78d4077371bfe98a12adf1b8aadbfc0c. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/USL4R2141008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x324f898545855ad4498002e50d99b7583fdf20a35e553c5b9ce703553c9416af. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/USHM22202575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f6a917917d72f0f903a70ef4dd2927d9500660820b3360305fff99f2efedcf5. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/USHM22229793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8aa8a7b9d8a28a87b578e3fd611b29fdac855ddf1f9864e2a990bc8ddd642b0. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/USHM22232835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86a607bc3332c2c5774cef173e251260f318cd7aeb9d81fcc5dd770b6c1f09d6. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/USMH92364387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff4a4fea1863394f18651a3c0689f757687ce49ed6ccc9494bcacc856012a00. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USMH92364388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37481f4aac5851984c9150fde05a4d2f71eaa908ff2f67e1478d446d5eb99ce3. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/USMH92364389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3e6be14565fd63f4ce4f70d75c1b08b4e540f8301374ddab494b7022a7f757f. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USMH92364390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d8f81fc5406bd96c011f6136263f856a8db7ba72a6a03e1f8317fa7a5eb8ba3. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/USMH92364391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf19904ca81c07c56860e223000586f23d69d8570b76df1e4bb46fc3519f8cb5b. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/USMH92364392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb8129b45b66ec7cb11521ba7afe44d05493049154035b85968c022acf679216. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USMH92364393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c9701486d353a90920bec375f6f28ad853b1426c5313f41865dbdb8593a36b. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/USMH92364395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8932dc976f4bbc3e6571f12129c26be985b2151da48253abac2cfc40c156c3b2. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/USDY42466336.