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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a6e398db10f7e8d55364c3af0390b6a912ce8ac8bec7b41dcfc53d79961984. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d524c3cd-d9fb-4468-a928-87ec8f93e43d.json and https://artists.proofprofile.net/proofs/artist/d524c3cd-d9fb-4468-a928-87ec8f93e43d.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c4a0f7b58103e174dbf388f7f795ccccef184d3feba2db5ea5a3ec0d4c2574. 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/QZHN92078448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c4a0f7b58103e174dbf388f7f795ccccef184d3feba2db5ea5a3ec0d4c2574. 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/QZHN92078448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0496f84434d04d0bec80d31b625169c248e074ddce4890fa27380bb73066da00. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZFYY2180130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5433afa571545ab8d674bafdae79b6cd52cbafd04e48f0209e514f88f95f76f. 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/QZDA82584091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb7db8d0e48abbff82215cb3a3398221f44f7ebd6a5d4c5d743f0474d08cb4c4. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZES52505303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ea0027cc0d71d369498f939b5d0967348e0d53ee1ba87add9a2d9a6d17be8fa. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZK6J2509733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b6f4c6d9d7a2ca987ee05a11eac5aa99fb43452f8e93ada24d013632d58e4cc. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZPLS2121585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2694d3dd5afa2203f47a40f7aa6d2349cc2d5a3907cc1513b0a71356962847c. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZDA42240905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee602a76c2685bcfa1447a83f9b2c240a1f1c9fcc018ea264b0fd755fbd3ecc. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZHN92223435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac801bf752d7655e833ac741e4fe2cfa2883818d52d9182f69a606a9137a4a4. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZDA52324458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e57fa99b0189be929bccd5302f6ea7cf5a7c8e64a78d35a46824530290d193. Chain 2 (Bitcoin): anchored in block 957595 (2026-07-11T18:26:17Z), 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/QZWFF2369193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b750915b019737ddae0ec8738d46dc7c5fb8a1d7547fab961b3f26ba8117bf. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/QZK6K2597788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf5a2684bc4bf6c656ccda4bfee0c36cf470be8e9010090922a095d45524d845. 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/QZWFG2474266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2694d3dd5afa2203f47a40f7aa6d2349cc2d5a3907cc1513b0a71356962847c. 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/QZDA42240905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc58f507388a48e4d3a9ebd6857bf0840181d47d2987a79e72a8c3789c6682398. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:25:05Z), 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/QZHNC2572980.