Ezra (fl. fifth or fourth century BCE) is the main character of the Book of Ezra. According to the Hebrew Bible, he was an important Jewish scribe (sofer) and priest (kohen) in the early Second Temple
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 0xc8102d5201fff62d1e340a7d4a7a21bfce640ecf320f505b833ef2e9749dbd39. 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/348678fb-f092-4e27-bffb-3260eb4b8565.json and https://artists.proofprofile.net/proofs/artist/348678fb-f092-4e27-bffb-3260eb4b8565.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 0xc8596bcce942dd57b8bdf98765286fa8b1f4186d430b3e8b2dc23f513a64feed. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZZ7M2491081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee6b7c98afad9392966a931e7a9fb54f2d71d3eb6be9903da17c87f3b4e9f4c1. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/QZMEM2129371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f8ed4ac1340cb34734ece59ae650391430f6acd2579793e03890b96fb8be61. 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/QZSYP2432548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad9e658decf0ed040e9980c96e6605ccd0784a87a49be83153bf8c22d6e5b0e. 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/QZS7J2466643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x582d6c53f524d180118cb32844e49b1d6a663b124614045809453e235f6bdac6. 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/QZS7J2469987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f8ed4ac1340cb34734ece59ae650391430f6acd2579793e03890b96fb8be61. 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/QZSYP2432548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b8150237ea56a205d11516a2b24616ae3007f4e0c2e768424895761988b8bd4. 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/QZS7J2498934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24f9b9e9207c340d8203731077dd5a47b18ed5d4b9b3f23d4ab002a2fa74cce7. 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/QZS7J2437733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1008e1da300d79bcc0ee0a34ca97d8c75e982262dd44b78740f52cd5eafabdd2. 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/QZS7J2497914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad9e658decf0ed040e9980c96e6605ccd0784a87a49be83153bf8c22d6e5b0e. 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/QZS7J2466643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabfde7bdf5fc71e6a780c24d23988894ba534e8efcd10c4404043b73f1fde239. 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/QZS7J2478006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x913c04b44b146c49d999eb7e28de2323b4a90b9d172df47dfba39345314e962c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZS7J2440523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70e35d78b0a44546b94046a162cd5fe7eb1be1133d2023562d378ec5f992cc5f. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZS7J2444989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26caa2105562c415373e5fa906dd0749a7625fc928f0e416363fc46f160ddfdc. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/ZA56E2415844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdfe6ab826069e1b6b90d9a0fcd7eada3d6293cf2a9390516c7c7f656357704a. 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/ZA56E2415845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x427ae41e832dfac5a150f16eae632b88e9a5fef827d078e8e15dcffe32e2b046. 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/ZA56E2415846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x357497ecd4883380062e9eea526e1ab680948ccea4a9fc4dddd6d9d14b598bcb. 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/ZA56E2415847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c7d303af9986086bfafd9f02d815b8fdba74cb8b5906914970c6df404e0f1d. 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/QZNWS2423582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdc9947526d535372bbab8e125bf86a503732295e24a3004cf2a4bc7c79e786d. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZK6G2262518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x330611ef81b360134cec4a44f05e3d80fbb44a51894f353de83f7ed94e51d473. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ZAGN11600037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06be18e94c62d8dbfa96cd64f734f95869396b1d343f5daac7158674b64a1246. 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/ZAGN11600038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x806a10e3ac3cddf2b7f383bf9f02b6b3e7b035f5310bef8af6fe9c6703b91518. 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/ZAGN11600039.