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 0x443bc10853d8238f48e631218a952e57b3eb45532d01b09334f5b59a3bfd942b. 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/60cd7045-986a-4f19-a561-1246a24a0102.json and https://artists.proofprofile.net/proofs/artist/60cd7045-986a-4f19-a561-1246a24a0102.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 0x0f0daba16ec9fe0e3352acdfb33c255254e8f1343d6a361d23cc4dbfea3bee31. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCADA1700347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e548c520aa9541dfb2be5919335220b4914980cbe2dc0ebb2151df687b6bd5. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:05:36Z), 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/TCADA1700354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x522806470b40687d4c626b7c62c77f43137192801e25e89792ef161f078f98d9. 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/TCADA1700357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0daaa3156cf28d42392b80cab0022eeeecf1aac18fc861f86487bda1f0f397eb. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/TCADA1700358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab984fae1deb520b019e0ed437cd2e55a65b7fd6a201bb2cf6b6fafdcaf4e12. 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/TCADA1700368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce9aa8f100ff734f8b7de30b79abcf5307fc94d97056f58a1489376df1f0aa2. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/TCADA1700371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e2d34355c1032fb92c9aea8c5960e5deef6366464ba95f468d000db4ecf449. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/TCADA1700372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fe706b133fa8967fea47b526d51e0fc6bb8b53a0a39b9b330d063d9cc716be0. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/TCADA1700381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x166fdd9d71d7f8dcb58459b959ae9286f149f322b11a91f6f83bcc6812981722. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/TCADA1700384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff999502b075728db3c6e4faf962659c2b4c11f4f648c7a9507199f60c8b7ca3. 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/QZW9L2237816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa872037ba64720773cff21a65c6c090732b5c1e11ec1360c282f865ef8e438e9. 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/QZW9M2331924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x847c55872d28910c8a2ebf86de4beca5167e293a083210ae050b8e7161f3d7d8. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/QZW9M2331925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534b5d672b7aae79e17d2e862d9639fd3fce56f5d75dc988e41d7da3d58737e6. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZW9M2331927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81fcd35b5c6c2ebd723d28913eb146610c474156580f62baa0cba94fe75dfb4e. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:47:51Z), 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/QZW9M2331932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf86eb8c5ebb5bea2b6370c63fae47f17c63276a97d52525587e8e8fdc664113f. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZNJV2460208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5da9d32d79a7a8cc52caf6b9bb8d04cf029ef500994fa977c636f37c9e4dc9e. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/QZNJV2460212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96860666ea0d80ff5c978b1268fee09dc1f41ac4ae411066ca9b068637d74298. 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/QZW9M2446229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa88f3bee8526ca5785041083eba18d048802bcac95482a6208b66c301c22e354. 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/QZW9M2446230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888f91398eb106374bd84e80e0500915e3ae2b7d5616bd183ec37b803a772536. 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/QZW9M2446231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51a83aa1fcc4b99bc45cf66e3363720d0e86334cbf4d7f0016dd4c2913596bce. 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/QZW9M2446233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83cdc6def47edbd33ccd6304a9802e7be7dfe680996d3c9d4d5b8b262417125d. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZW9M2446236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0950c7830f9a9dc422c842550410391f58f3177aa8bf183205309625c7868e76. 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/QZW9M2446237.