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 0x30f210689a2ba623a701b116532a11e323a7b7d03e1be5853ff667a62b460cf0. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3ba10acd-3b6d-47a8-8c20-788f67602e76.json and https://artists.proofprofile.net/proofs/artist/3ba10acd-3b6d-47a8-8c20-788f67602e76.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 0x918592b983e7247bba33d4d9f2b43868ea5d191a01c35c87c49119a399580e9a. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/DGA052253226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dd08f2facd2284019a36174f265a641ec07e134cd5df897254d1d18ce266ec9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR53O2100500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f6ff549648220da2068ed564cf1cc22363b2711d16b74500592d289cf41094f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR53O2100510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedb4052db1fd52dbaea6e269e135f9a7aa098ed75b64794209c2d5128a6116a3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR53O2100520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x491e793997ea5945dc1d5b88f39527a881ba78d6aee1d42ba18ff2a2815bcee6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR53O2100530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf276900a9a802fc7f6fd88c2ac30a40a4f85532fd1929b8b36926e4d0cc9a4d9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR53O2100540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ce235db103f73a3d4d7e4c3033bf1d0f6775b518e6dc5f5fb278d910b2798cb. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR53O2100550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbfee9b74f7452b3605415f81136a372195db135deac4bd2e42a19637542d1db. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR53O2100560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97635e5fae6b14b2d734dd97e0d262d24d69117c96f4bd26c0ed8d13305a3c9e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR53O2100570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36030facdabc731f9afbb75625fbd5dc46eae6195773abcbbf8f0581ebd89631. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR53O2100580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08ad498b7aa3402fa24e3f4194055467bbed3716cdab464af57f865766ed30c0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR53O1800020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb9719819ab7e65d9b8b077e98ee7c47d0bface591255be902b4bcc3ea34109. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR53O1800030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27280739855729ffca6399ed26aeac769928040c37434d663504c0a3e4631857. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR53O1700020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5030654848602aba5cf9b53b3e427a72195b692bfae8a2b4b2a16287350808bb. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR53O1800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x434fd061785242ac7af7c78e7e16b5123df87d9f020cad911af8c96980f03fc7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR53O1800040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c929c5ba4fadadbd76e806ffd1995d43dd41447f130b8c2cdc6a609720ea4d3. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR26V1633035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf63b346881869eaa9ffbcca0254061a02f1dbe140c3e11dfcec510e41438446. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR26V1633036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x432f92afe62cd28c3a2d1fb5afe6aa4b72c6539ae7abb9b6e8ec8df95cb574a4. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR26V1633037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6fff9fd7b0802a15cd484710bec0b4500af5c7897ea3f85500c9c21f8cef867. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR53O1800050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79d43d2c6818fe15b95e9676506c2096b8e3bdc63ad34e9c6441451e075df27f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR53O2401060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad3917597e91b4ea150b8e7594e8ef3d6a689933de6fff018e8a234d15b4da8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR53O2401040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91df4dda806667f8656fb34befc424caa0ef342931288bfbbaad40564851a04d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZVEM2394577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7531fddb47f1fcbe0c720f9c8c30c1300c1c17c6581222618f930c925a2fdb4f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRPI62300170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x100eafc1cd173b2c68d0fc2067c1df9ef117b4a4ac1db600e0792cb03f6c359c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FRPI62300180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc3e35cc12bf9ec703bc69de1469363b22715e53bf480e92c14f56c3df58b83. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRPI62300190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x100eafc1cd173b2c68d0fc2067c1df9ef117b4a4ac1db600e0792cb03f6c359c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FRPI62300180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66aa26852fb0a8175ee1ce83a22dc5333fa7b4cbdfdd936f6ed4fbe5f49c56f3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FRIDO2312530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf276900a9a802fc7f6fd88c2ac30a40a4f85532fd1929b8b36926e4d0cc9a4d9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR53O2100540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f6ff549648220da2068ed564cf1cc22363b2711d16b74500592d289cf41094f. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/FR53O2100510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dd08f2facd2284019a36174f265a641ec07e134cd5df897254d1d18ce266ec9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR53O2100500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbfee9b74f7452b3605415f81136a372195db135deac4bd2e42a19637542d1db. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/FR53O2100560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16fda9ec7dd9b6b52c66c1bbd36bf8e2b40752f6a44175de30f20f433191a615. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR53O2100480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e068c2000e1a4086d6f722b6d05fa387edd7bd2aa6a87f10275ec337f249f9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR53O2100490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb48f6276041d8e4d87f6d76c3f611b3789c5b7e60f263143e1dca45b5b79e6c7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR53O2000300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f695a3c666d2deb3352c77cffc979b03ac94c52491b0cc1751f88354718db4. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR53O2000310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc250a46f7096214d8b22edcfb3fcb988d1e87ae14c618cd6fafe4e6658ac0596. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR53O2000320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eedbbf470bb4a630422838bbe049be885ba30ba660b5a5943eb12b7fcba239a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR53O2000330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49da1f21f08fd6b0f31b38ea87f1dd2416aeaf55081573674ab291932baa7eb8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR53O2000340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f695a3c666d2deb3352c77cffc979b03ac94c52491b0cc1751f88354718db4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR53O2000310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f6bbadc12d39072489dd7ab71a0a4aa92b0de67188df8ed95e9561e62b96e9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR5301900180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aa7b304c3dd410ce800c0d7612fdff9ba611c698ec7bd92168e9330f917fe72. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEXC81900021.