Iris most often refers to: Iris (anatomy), part of the eye Iris (color), an ambiguous color term Iris (mythology), a Greek goddess Iris (plant), a genus of flowering plants Iris (given name), a femi
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 0xab9e6bc449a502bc29ec26b62abba37ec71898f6eb5f35343bf0c453864e215e. 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/de429126-d198-4d65-a58f-9a1c9fd60870.json and https://artists.proofprofile.net/proofs/artist/de429126-d198-4d65-a58f-9a1c9fd60870.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 0x463b906f777fbf734273208b2275578ba1227656a463e1661077806ecfb357de. 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/USA371489633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4287a0e83b47dad890f97834a0dfe6ef88d8afb829caa99a6241bfe9aa64666b. 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/USA371489635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b9f04c542972e9f0d7135183f7f6c124608266c5a3ee5269ce47f03cae808cc. 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/USA371489637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf55173a6bebf036efdb2766378d46ff3de5848d3df40a2daab62d639903eb01. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/USA371489638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x357abe49b935484c1a349cd149ab71f6ae991a6c4eb6a3d2c8878f59fa4b3267. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/USA371489639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f068d249a88c13742d7280ee10282357a5710012ebafd8c59d1c7eafc18c11. 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/USA371489640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1f875504b403ce976854b4abdcc6ad77efdc96100423d19fb30475d987f8a2. 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/USA371489641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4affd2f840fbc42156e70f610ba50ae5246d5fd5e2ffe485b04a70a541c2db46. 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/USA371489642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51cfd58314477855fbaef934b6df9c461a695ff74f2429c1635d4bfdf420f43b. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/USA371489644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa8aa6e522e2ec369604b49efc7c7360955e5e3db47d08f47bca7a213ef04df2. 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/USA371489646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba1cc66402c732b7b1748f285a3d6b873f6bf6c1fd5fbfd52de974502b16646e. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/USA371559017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73a9e2a01259df3d51be68e912797bceb9c31f3a46306c16b912c8606eaf8058. Chain 2 (Bitcoin): anchored in block 957620 (2026-07-11T22:32:56Z), 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/USA371590968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd149abf82abcdc0aff9cbdec169042ecde87656699a8673270ba805266e845d6. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USA371590970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32cd84a8f40623bf4aea351ebefefa333d61c2dac18d41cc1069c60a7c9efd00. 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/USA371590972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343b7cb4ac96831433f67e7a1531d84b8756802915717e6050d466bb9a7443bf. 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/USA371661817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cebedfec39fb44b6e189c16725b46342775a011bc49a4f852bff6c83558d5ca. Chain 2 (Bitcoin): anchored in block 957629 (2026-07-11T23:44:46Z), 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/USA371661818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08cf8949169e94fca983a89201b07091b5bebefabb9b0075c8d8fdb7fddc4d2d. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/ITB550505106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea33ac5762b7807fbb74d6fec64397609ca5a5ad245e74cd4d5dd050d2be0850. 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/ITB550505109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6162f4916c90787ca8f6e53f145065db492bd673663bd8983cc7772a738e28e5. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/ITB550505113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10438e4495e1e958584b29f19cec1ad8e1b893728ac9bd6ce345b7e44ace5f4a. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QM4TW1594971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f5602795c0ff2f412019fae18849caa3f3a5ce1c9ed310ed78c5ed1b918737a. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/PTVI19701485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f5602795c0ff2f412019fae18849caa3f3a5ce1c9ed310ed78c5ed1b918737a. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/PTVI19701485.