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 0x69b27ad29397449e7db901202e59688821bb2adb35c69b38a691402de282f216. 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/757d2565-5f3a-4286-a8fb-ad57b5fdaf79.json and https://artists.proofprofile.net/proofs/artist/757d2565-5f3a-4286-a8fb-ad57b5fdaf79.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 0x930781082a88afa277768749450afbc9dc896f234ad6be0917cdf161cf1c0939. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/SE6HN2463124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca61e464683c51a3c614134f515f581424ee29d1bee5dfbec5d451a232ac7c7. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/SE6HN2463125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf812ad154229817af8aa81d4f48439da9ba6b47005769c0a61fda9dfce49c130. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/SE6HN2463126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da39d43fc87863ec879423db139742f93d56e893fb3fec5bea5752a3130e1ed. 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/SE6HN2463127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f1e3429f48adebfe2f81e9aad78285802400cc6cf77ad92fdab6785d0240f4. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/SE6HN2463128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebe24ba0b9618dc5ebc4d673cbb012825fde87cb9cee36305965849c887b30f0. 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/SE6HN2463129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92bdf39142d73d15e0be2eb0148f74280aebcc139595163d31391ad34832beda. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/SE6HN2463131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a83296c8a46f3997a29ff2984dd111df12e53855bc18f66147c07d3c9f05f85. 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/SE6HN2463132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e97abc76d96001e6a34d1dac3586fc4b78d6c5c90fec2fc07c8c47d7cf0d908. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/SE6HN2463133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde182048a328f9595c50e938071d44203da7127f446931fd367371d5148f4e9e. 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/SE6HN2463134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8588c2107004049850320087493e55643e5127d886ea453d3b47cd1aebfe57. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/SE6HN2463135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef571da00f2c050a88f0b3b845d1d1e89e26b3d178a46ae47c8a55d489f11b0a. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/SE6HN2463136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b73b37e9c877e6f09e1976d24393cb85a94253dbd968876ba52d92c710c7bfb. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/SE6HN2463137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf7fc8c165e43b79886dfeb428fe7907a0975ab2dca5e77e1c3117c94edf36ca. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/SE6HN2463142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289bad30b0fce3eda4b4c58d09bc4d195550fbb8d47cff40cdfba2d9de97a0da. 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/SE6HN2463143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x399943db4944c2c0079a63f4f183acc36446dbb05b95a80d838baa7f2a000905. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SE6HN2463144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f109908b84ee07b81af09e4f8c179d6b59d750a728211ef686de7e299b3fb59. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:00:55Z), 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/SE6HN2463145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc87850107748921d19423e360c7d2c27388495735bbb68aec4132df5aac65faa. 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/SE6HN2463146.