Maid of Ace are an English punk rock band based in Hastings. The line-up consists of local-born sisters Alison Cara Elliott (vocals/guitar), Anna Coral Elliott (vocals/guitar), Amy Catherine Elliott (
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b9b47f2067e9e0b8a6e998a6518195cadab524e916212eb60cb273e0cf6d03. 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/2920b1f5-20a8-4e2d-9a55-e5ace9d1d569.json and https://artists.proofprofile.net/proofs/artist/2920b1f5-20a8-4e2d-9a55-e5ace9d1d569.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x112fb5444277060c1bd208324688b502e0477e6bfda32258ad1c8d2ff173ec7c. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USCGH1767135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c5dd9844ec0bfb7188a196b0e0e68327f35bf096f59ffb777af829cd0677db8. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:10:57Z), 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/USCGH1767136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd875a576a5713b47280e72a52ff0e3fa355214a2ee644b2c6b8936a32e6b50da. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/USCGH1767140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce350e49928bfae65b358dc2fd2e1249088ca1d3189fa5806328daaf848b744. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/USCGH1762405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61309095211a293296dba4216432482cf7ea66e1618aa9014545ede1f69a3d23. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:56:00Z), 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/USCGH1762406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc76cb28680d39d78a5be579635f7fd2b25642e61ae231d35464dd6e4c7d44d29. 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/USCGH1762407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e554fc6568f2eaca8f324398fc6a1dd775c66545de50a9d1500f708b9b67d5f. 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/USCGH1762408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35914b0fe592abf88142d5939b2e7d89b3a385e52bdbda631a046fc07a37175e. 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/USCGH1762410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc14ae1db29b5d4b4c32321defcc5c5b46f04435442ea0972f56717a3ef518967. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:33:24Z), 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/USHM92091334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x688792dce277d69dcc0848f9ca99f12d3084474a7b7ad7ca70edd17344930d9c. 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/USHM92091336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x565b647ce6ddff3d655eebd6e691477956b7eb8725c86c49ce7010b4f466bb92. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USHM92091337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d40243ab5bfea0a801163fc5cc77ea994a157bf4052e8c8eee3fe896f6f8c1. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USHM92091339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf4edd7855422eb1c2de45ea333f836fcbbe75cbd09e3063416d9e235d987ac6. 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/USHM92091340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24897805485d00f54164ecfaf10a6914c73ade13d96b44c3a89edd5712964a2d. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:38:49Z), 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/USHM92091341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x986cda6417b60e632a58e73f7015637070a1457910e02fed27fc39bcd835ecae. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/USHM92091342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd090081b5451e273023cb76222350d5954e9cc8cdf0be733485b3afdbcfc9d7. 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/USHM92091343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbd7ab3b5bacce8374322521343f3f349e5d47e25964f03d860debf204bc4763. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USL4Q2279465.