Liz Cooper (born c. 1992) is an American singer-songwriter, guitarist, and visual artist. She first gained recognition as the front woman of the band Liz Cooper & The Stampede before launching her sol
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 0xcd0159034c8484c19fa526fd936ed29cb665f5f5eae5081525220df77d4dc449. 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/e56506d5-2901-45ab-b91b-ee66e2c22806.json and https://artists.proofprofile.net/proofs/artist/e56506d5-2901-45ab-b91b-ee66e2c22806.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 0xd8df6567eb56c9289121af462e5c8ca77d37e9109f12ed0a65489c6c75d6b48c. 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/QZ2WS1600002.
Liz Cooper & the Stampede on Audiotree Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d83677e575c31e68fc242e88cd0cdda47da39b78430e5be85185a88d709038b. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QM99V1612403.
Liz Cooper & the Stampede | Audiotree Far Out
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90aba8e1a38d578ac68cad6106309b7fcbef417c66b7c91d68f1d1afce402cb8. 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/TCADC1764319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3df0c765b8170e69796da8a8a551f75a1f3fb6689fa63fc7203c8e96e0ab3b1. 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/TCADC1764330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b31aec8a7ec07d2b8d6c38784d6244e31f8c75741c82ddd5fbc7082fc0a6772. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/TCADC1764333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cdb898250e12528aa97502ca111f8152ccc8d0bed7cace94db9a19e967f8a8e. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/TCADC1764317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90aba8e1a38d578ac68cad6106309b7fcbef417c66b7c91d68f1d1afce402cb8. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCADC1764319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc48decccbac346011668b25d7967ec17dc0af53751eed4e55dcc99a7bda02c77. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/TCADC1764327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ba1e442cd3d0db337cddb2f8c5a540c15a8a8071853608e0cbc7cb0f672018. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCADC1764328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75c1573f6105a350797f2205ca06ec6947c72498e1e04eecd94c535e2770157a. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCADC1764334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed127a1a23f8525340ff6a8f6659bf64580311055f62b35ac14dad0a206f353c. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/QZD262100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed127a1a23f8525340ff6a8f6659bf64580311055f62b35ac14dad0a206f353c. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZD262100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7afbfc96fc579c44cdfe7986378adfdcfa21da8f893a3bcb382cab1b32242fc1. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZD262100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c54437a88f26ee50d1404564940a8c64c80a6e6e189ed6f5d912ebe67c80f69. 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/QZD262100007.
Liz Cooper on Audiotree Live (Session #2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8505f46745615ef9fba4c25f2ce5cc75dca96dd20f8daaaace80ba316050b90. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBKPL1831082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x546dced6a403553a256119c17033d572eacd0768beca64e588654632f1437e05. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMFME2087154.