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 0xc786ffa62a9660587a2e1b4ed0abfbfffaa19d61347007375d044872c0c84b91. 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/694e46a0-d943-4a3a-9350-2364cca65355.json and https://artists.proofprofile.net/proofs/artist/694e46a0-d943-4a3a-9350-2364cca65355.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 0xa20ec51fc7a1a55b2a430a484901dd22ba7f050d7dd42bfaefe2ab5b819de290. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/DEHY11800326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x867f6d34d91234efacb65a809c380c40b144f0b273ba7f00619d5870f25e9a58. 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/DEHY11800327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14ee55e83fd070af6c716975f9598845b368857eb25ea8bfb6dbf322fbbd94de. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/DEHY11800333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec246a76123dc9103adf94681d7ee7bd2b2aa43a5f98caacc32b3c3796809f8f. 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/DEHY11800337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb709e3707e9f2e59e37d652e7b5908e49dd076e7a8038903057af66865ddc70e. 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/DEHY11801101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f6f5abcf36fcb10cbf21e36002cc5af6998ce4112b02887c1c5808067c8b0a8. Chain 2 (Bitcoin): anchored in block 958493 (2026-07-18T04:34:53Z), 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/DEHY11801103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9024884f48ad8493ba045dab23bcc632932cb3e43016870ec680901114392782. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:32:13Z), 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/DEHY11801104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf77fd698e77e78eef62868efcc0997812643165e078fa52bbfff6091a565de56. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/DEHY11801107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb19155f4604f0124185aa1726e16425527ff1ed115b8668a1bd5c9dd20e38f6d. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:48:15Z), 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/DEHY11901085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab6e22953ded3b209397ee06ba755f6e42a1c083d4d370bd523809fbf7a7a5d. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/QZK6L2356973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1078b1a5132d6dafb1be453b885c94cb0b613d877942b7e237e7cdca39896c6. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZK6L2356975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0640ba67450bc0b14a65a777f831d7be0bffa18569c4c1c27ed49a4d3e9a7400. 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/QZK6L2356977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b41777538b7a614fdbffa6bc2cb24555570662fa9031eaf7ed9d154df9a27eb. 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/QZK6L2356978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e3e4af4b907d5c8e930f8e85330b5ace8985d04f12f15474503c86dca7d506d. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZK6L2356980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a26d4efbc2725d53e28b0736b6c3709ef90131505524d8ea7207e30e77ce09. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZK6L2356981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b8bb89bd7082ac3ace87a8b47d8dfe79212ca0de1e7049edb4c50fb000cf7ff. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:10:34Z), 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/QZES52102827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83df0c34d29b36d13c1195f2108c2d619a8dff2725195310f5154a02907917e4. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZNWR2160735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2772a17bf661ece25354df61e97853ac2af84ef303f19fa47ae50c1b6e205b0c. 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/QZNWX2104548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd46448fd08fee87cc916cbc83f447fa44d4008cf08e097846323f6284041653. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/QZNWX2104550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa27126d13aea6c8f782c2a3f05ba64d301782c84da2cd0086f5cb1448919a6fe. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:49:29Z), 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/QZNWX2104552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x050500a68e2fd15a36efd477982024a5765bf9f06ed2406cf312529c9266dbf3. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QZNWX2104554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x228df0d7149f8f30773aae75be1f8874b932d9c6597098224dda4e12563ed717. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZNWX2104557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce9b53cb9c599a9e44298db92e1169b16f885bfb98848783695ce1d0fdbc944a. 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/QZNWX2104558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x676e8d95fac485dab925e5696e87b3e6fe6e1a1c8da4d69d0fd484188571cc1d. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZNWS2537990.