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 0x6dc865c674b6241672505dad4dc950e2c6dc8d0b7e21db7e6c90856c2c9ff857. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f9506a54-d651-421b-b885-5106bde7ad21.json and https://artists.proofprofile.net/proofs/artist/f9506a54-d651-421b-b885-5106bde7ad21.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 0x7b3ae59d01a10e818de5dab54d1d49e176dc0efb8dc54bc97ecf0513cb234c86. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/UKU932250943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83838efd7a157ccd2d45480abd4c1094eebf785d410d4265f8e77e2654eda896. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T11:07:32Z), 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/GXBNP2451084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x065322b1d051777b6e5ffbd758af4ede458c43c446839f817ee693fbfdf2eb6a. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/GXBNP2451085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63e849d29a147d371785aa9cda4dbcab88f1ec0e11c34ec04ba53c3bb9dc1a14. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/GXBNP2451086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c51402a61ccaa1a9ab336a6ac5eaedb32ebe5b5e2dcb9208de6901f4a8c134. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-22T02:32:34Z), 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/GXBNP2451087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f5960547c6e538150acc4f053b2ade80f5fe6cb4cfbc1f9fa4f6ee960c32705. 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/GXBNP2451088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e6b03307fcff7d8d227f8d9e5358ae21be18845676616337f82712cfb5d7b9e. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/GXBNP2451089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cbe45d18a925fb6b31b4ff0c18f707ef02ae31935c5181cd92490ff5e073cae. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-22T01:04:57Z), 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/GXBNP2451090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e87b5aff1fd5e59b3e02cee969cac3261b16744e651ed06d5499cdeb3cdb21b. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/GXBNP2451091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf53575d8f155f0e37311511401c2309e10885a3eee24746780ff9f8b5c878d2a. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GXBNP2451092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35e11335caa1c991d335cd6718b3bbc3703b4a80531be0ca2683bb60fd073208. 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/GXBNP2451093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53608d678743ec2e07415e9d535b72dab978a3e8dc5e3aa6c152041f619d8f77. 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/GXBNP2451094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289489ceaa892000b56ecab471eff8ebf623e45981fc97719b0848f8b18606b5. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:26:39Z), 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/GXBNP2451095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x983936365327ef7c33eb0fe8399bd60ea9376375b1a79e9983272cd7c4bee319. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GXBNP2451096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x971f42530088cd54d13322fe09f933ca8158e2651124c3e1272008c0abba369a. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:04:50Z), 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/GXBNP2451097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad08f68d6aa63ee7e1b5a92562b725a30be20d0b9db2f6d26a88afd6020df26b. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/GXBNP2451098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ffd7c80eccdd36d55b403de98284e0d9481c95a86d6308cdc9232d1f9d84b97. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:45:36Z), 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/GXBNP2451099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d725d310189d6bbffde3ffe43471ae0e8d6fde07d96e925157db42dd86aeb45. Chain 2 (Bitcoin): anchored in block 959147 (2026-07-22T15:43:44Z), 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/GXBNP2451100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a78c497c60105efc90e2567d21beb3103af99abf20089897560fe6f26c10f7. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/GXBNP2451101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ef1fa2c7e33d1a9939a43818f4e512d485dc859d7166d80f5df4b78dcf3004. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T11:22:12Z), 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/GXBNP2451102.