Iress is a technology company providing software to the financial services industry in Asia-Pacific, North America, Africa and UK & Europe. Iress software has more than 200 integrations and 300 data f
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 0xffa259ecf074376248b63279ff290d9fdcc92666a6e84020226a6dbf5f44317b. 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/5a0a0287-51d2-472f-9959-5cb2057c3b6c.json and https://artists.proofprofile.net/proofs/artist/5a0a0287-51d2-472f-9959-5cb2057c3b6c.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 0x6f335ceb4c51318c6be2f8376e2f892bfcf8346cb4b27a5015079965de632d78. 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/USHM21589099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc51640f73af6e1cc98f981b3a250b454917853cd3761eb32d1dc7e61f0caaa84. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/USHM21589100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd977d85b527e99f58795d4983d30d0f20337abfb4177f7144a82e1b61fe58deb. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USHM92022531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d30a7a9dc1b993b486b8cbc79417edaa6705e9faa9de758cc408fa546eecf0. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/USHM92022533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa99c71b88fa61f10d00bbff247e99d80dedd32d03c3db2237bc7f06e85c6b88f. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/USHM92022534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39960b6bc38dcd950e79ec576c29121b0d30a063c91f96041c077568ec48196c. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:33:30Z), 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/USHM92022535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83de7b44b4f041a13472fa52c3f57c13387248f75320608e07f659ba70cc22a6. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/USHM92022536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f8544394be149505f3f2e0400123de1ccb4483456eb85b1d60386a1b615127a. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USHM92022537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c573b143ed574d679e843851e3930200f6594c3cb625dad7c93cb49bd3dc46. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USHM92022538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab944ba98b022372f641b9edc50f27533200b33b7f741ab0ba84d4850834f4a5. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/GBRKQ2482453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40761900e4196dee0287a5298e9cce5ed94df1310127ed9165a2d14f956c6ad0. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/GBRKQ2482455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x851e7830a25d866c213bb7dff2544e36b88c7f96b99f0b28c4a3febc5c83a80e. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/GBRKQ2482462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe999cc986ddb5558f4be00a554fa3f1d26304780403a3ca0cd52e5c7f1b3dbc. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:36:40Z), 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/GBRKQ2482463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe65e46825b86d7c4ffd87fdf11c9e85bff7a4ccd5e6df514ad6684f875e8607. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GBRKQ2482465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f05f90d60de48695cadc3a024f52090ea42bd14beb95421a4fd8b303763949. 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/GBRKQ2482467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab944ba98b022372f641b9edc50f27533200b33b7f741ab0ba84d4850834f4a5. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T20:40:29Z), 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/GBRKQ2482453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40761900e4196dee0287a5298e9cce5ed94df1310127ed9165a2d14f956c6ad0. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/GBRKQ2482455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x851e7830a25d866c213bb7dff2544e36b88c7f96b99f0b28c4a3febc5c83a80e. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/GBRKQ2482462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe999cc986ddb5558f4be00a554fa3f1d26304780403a3ca0cd52e5c7f1b3dbc. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/GBRKQ2482463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe65e46825b86d7c4ffd87fdf11c9e85bff7a4ccd5e6df514ad6684f875e8607. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GBRKQ2482465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f05f90d60de48695cadc3a024f52090ea42bd14beb95421a4fd8b303763949. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/GBRKQ2482467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b1ec0fe7270efb0d84d3961e93d013f8e6f5a16caf9cf1e3700f3b84947e76. 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/USLZJ2537875.