Elizabeth & the Catapult is a Brooklyn–based project by the American singer-songwriter Elizabeth Ziman. They have released five studio albums. History Ziman, who grew up in Greenwich Village, trained
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 0xafcb559a667ee84ac6f3ea845fee88b12aa52268a31560afa96fd6032c17ef41. 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/5dfb6bb8-e3df-402f-ab0d-d9de10ea066d.json and https://artists.proofprofile.net/proofs/artist/5dfb6bb8-e3df-402f-ab0d-d9de10ea066d.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 0x294f89455336b12b4177e85e717afd7e3f316e6f9614d9f0741db0b18dd28727. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/USUM70956573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7442349d86ec6f12176c835ab731b01d1ee2c5a388dd82c6adf52b563d4c182. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USUM70956371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x351a4d59a22568fa91312e774813f56c8f1bf0473fef555c121d794435b515c5. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USUM70956574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86925d89270f4263b8208b122f1be29babbf364a2059e9e09123116081fe2b8f. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/USUM70956578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c42ea96bd8b0540f4a0270e86c15eed52fb18d007df28d3cbb2e675e7820305. 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/USUM70956579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f1929c4621dac4cb209f661f855a5efc14449d1ad82fbe522e357dff7e7ae3. 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/QMCZQ1300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf83c82d1986f2450db65a4c5e46f293321b4f1e6a8f9c790ce795775c1e65b. 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/QMCZQ1300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ca0d6f4d4f497e5d9ae148adf8e7feb139c72786f02fd29aa790afc10869f5. Chain 2 (Bitcoin): anchored in block 957728 (2026-07-12T16:20:40Z), 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/USCO91769802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcce2db7757d42721ee8adc99009a7939c0411cd482f0eb8ff5d5b171f093a831. Chain 2 (Bitcoin): anchored in block 957726 (2026-07-12T16:04:28Z), 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/USCO92177002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b4e212269fcfca528d9c7ad2fa1a7986fae0789b5a19855088927fea1400d1b. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QM7282480545.