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 0x40a2bd0e96a3ae905f36f9b6a7c6e7a3db12d2841c6904c61194a3be389e29e5. 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/c03bd93e-3edb-4f52-b7af-b4c9e71f7d17.json and https://artists.proofprofile.net/proofs/artist/c03bd93e-3edb-4f52-b7af-b4c9e71f7d17.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 0x859555b6a71f1058dc9ec3004076a9ef35b6eef34e29d924ff0cd8ec5c47a113. 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/QZFZ62352077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de080d5f91e7673ccf8c4ca93fa8bddeb9e01cba63f567f3de612c1ea7f3d97. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZFZ32399354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x978b3d2bbba96bf9bc080776ef093d8b1d73ea6d92ffdd54f33b449474b4307f. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:20:33Z), 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/QZFZ32399356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x269b3055282fab2c032d5121b70d90955b6397566d9b0d99a4c3a891f63317c0. 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/QZFZ32399357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ac136e7720bf33bd8f5801a9a6d0ddb1867997089806c28cfd1211f28a468a5. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZFZ32399358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f690f42da3473e88ba2e9b1ef7d719833b0436e9f92c623c8b4e4cd126a5bf. 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/QZFZ32399359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058457b58f4e8dde88dbf237e676c0232a53938c6731e533728970e91ad4f4b5. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZFZ32399360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f60c37b62005ad287ad74261c261479644ae9a3fd24e614f8cf4e8bdfbf0392. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:50:38Z), 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/QZFZ32399361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17bef08b4a52f6d45b777081a8848813de14730232e076a261b8a04e71918a6e. 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/QZHNA2371965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2116f327d55ba1a5ed948f3863a4a289a6078f485b3e6575b5a66ddd70dda6bf. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/QZDQH2366542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d076712abfa0ab2f02950678e9590ac859f461976c305adcc95797f4c594860. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZHNB2391965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3b04609b953164c5790a361c8294ee24088435e4104f7742112ac8c671eb30. Chain 2 (Bitcoin): anchored in block 957565 (2026-07-11T12:18:39Z), 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/QZHNB2391966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda7f2e5b9dcdd087b8d1cc00f120ac2af62d0634516ea049af726d5b329f335d. 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/QZHNB2391967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb483472cafa02ade6a8bc930d71370923a54356b4f61e4d6fed95e3e6dd4e9c. 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/QZHNB2391968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dbb3788ff06386e32088c6278b0f02f0b01b78d37a74089617e29646d4dc8ab. 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/QZHNB2391969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5565598c13d7d78597967d2322e768fb1b45129ecffb2dc29984c73e04d0bba. 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/QZHNB2391970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20017b7f1dce80877332ad1fb424dfcb6e7545610fec0274a5e90236b26ffe41. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZHNB2391971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x124398a0d8d4a56d53dc7d1600b39734ef25c0b7c4d1e3933c902fa8febc0482. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/QZHNB2391972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07055d4ee38fb699573bcc2c379413652af06781294284d73a2ff16b18271f2c. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T19:54:22Z), 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/QZK6P2367458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5879620fa1e8286a914bdbded09a9a9f1c99382c168fbccf12ddf8664bb01d7. 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/QZK6P2365705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd83e5d80670324ab411a6c76a2ebf1b152e1b866fb7b17fc7bcefd9fccd8beb. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/QZTB92379270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe40c9d471ad215214659023a9ec0af1e077ea4bbc6044066ddea6707936141f8. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T19:23:21Z), 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/QZHNB2486570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57e3be42b27b309630cc225cd8429c9f715cfc989799b51c6586a20aa2e062a9. 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/QZK6K2473218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b1e22f0fd3af004b456b0ee319b6185eea062a69fc7a67d0b95c798a0ee46e7. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:43:23Z), 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/QT3F82543824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x186bef86a6c1503449fe2ba7ca4013e4f5947b565a4f57c2863154496b12ee77. 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/USA2P2354734.