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 0xa73993a17a2c75d8ea952021c45ffdcc760d84d644fff5f7f77d145ccc71758f. 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/e574c1b2-005e-494f-9969-45d422da830d.json and https://artists.proofprofile.net/proofs/artist/e574c1b2-005e-494f-9969-45d422da830d.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 0x60b11c47888e63779fa8b338ef8517e9967f9aa6c9df1ce7dd529f04121512c9. 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/DEQM61802630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeefdb4dbc2fafc1eb2dc60c16edf4ff8136116a228a0cccdf27433e7003fdf65. 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/DEQM61802634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ab17b2b4d6e716841d22aa0388de0157be58f3ed61a00ff4269f12768fb11a. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:42:33Z), 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/DEQM61802639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d79d2bb5464e84d1c025ca480cec3453b2dc0ed27f6968f75fe068186a7472. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/DEQM62103566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e4bda887b4a08c6f2b00b3c8d1f523f92fd65498e85903c767d7b5cf05a945. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:48:20Z), 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/DEQM62103567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41116eaacb181c8a82ffa225e24d7b336b29e526568d66cca6c3ea10c0e56eef. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DEQM62103568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc62233aad2a95a97688f5ac9234b6287772f6c6de7358196b231c6af6eca5f. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/DEQM62103570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ac659dc25c23753f62ce76449fa2e16b4f2b9979298a55306acd338e152d0c. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/DEQM62103571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f17e61b2769a753a1d9ab05eb70a45e33fcfa6bea931bc996e5cdcae704855e. 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/DEQM62103572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3faef092bc408e02a41700782070a90de72d34f9f5863b7d982085aad7b87b1c. 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/DEQM62103573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35e0c0076188578693a518b1c6b2aa08a616d5e292efa148f892e7211b90a79a. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T03:31:36Z), 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/DEQM62103574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c4011174e8d2112a52c9865936dc7a29f5de464c24f36fc4d10fbdfea6cd15. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/DEQM62103575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b6bff71500346a2deb78a99e998aae02c40b98b241f2fc5a85101111f85dcaa. 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/DEQM62103576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c2d6f4565b880b46962f0c91796381ad9761c2572867cc0b2d3da482664a17. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:23:17Z), 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/DEQM62103578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3d2057e4fdcbb508b099658a10fe2bf6f4a5078aae28164f72db836ecd4a4b6. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T13:43:40Z), 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/DEQM62103579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1c5633ae0fd13fcf53f40187f13a37e6085fba623818eecc3bf773d9c6ce778. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T10:41:29Z), 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/DEXN82548372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b781af303bfa77d8152ad76299b2b8f772d656ee17fb5a6e6506c84c38f437. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/DEXN82586025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc856f963fa85ebfa25eaf481060ccbe32959ee710b5a2db83e74b4e3a6016db9. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:43:20Z), 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/DEQM62504161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e8baed0aaec117d721c6b77c6b7c35d86e17f57cda2ce12288d82a196821d0. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:25:17Z), 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/DEQM62504163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeb27f49ef721e7d2794578e4e1067390a36733dae66fb58b0e106c1f8e6c996. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/DEQM62504165.