Liza Lou (born 1969) is an American visual artist. She is best known for producing large scale sculpture using glass beads. Lou ran a studio in Durban, South Africa from 2005 to 2014. She currently ha
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 0x265e4f964abccd94d95fedbde987b240d848447d666befd044ae154be0201f66. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4777535b-1f45-47da-99a3-7c8dc63a3b76.json and https://artists.proofprofile.net/proofs/artist/4777535b-1f45-47da-99a3-7c8dc63a3b76.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 0x6580e059033ead3b55438223778c5382e3713d12a596361c7b75b358b671ebcc. 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/BX60J2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b421c83ecc1d1a3a5480df1aff8858dd0de90946d2bcbdfdaba5c171c81a105. 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/BCIOS2100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd24c391a3ea00cba5fc89cc9d5dda4a3d3478326c8099e5395c7446c9c2928. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BCIOS2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe3a7b0fdf828ab189eaf4b664d119435201e9edc9029267012405c98eec50a. 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/BCIOS2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcedc10f03089d6945e76496333a5f686f91fb4716908f93ccdede1c897ae7b2d. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/BK0B52400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa904c8dc32596323c0407f94c58898027f04e46e921df9c6a465fe214ec54476. 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/BK0B52400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc96e5217631f569bd3bbb04e34fa8781ca3c1c539fc167b908b53a5385e399ad. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BCIOS2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e0a127381706cfbb865ab69e9ad4e4070a50a4d1c65061d272c5bf6e63a03c7. 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/BK0B52400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28ca972fdad0b4415ec4c853d478238e02d5851e36f80ad8da4977f3209926f4. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BCIOS2300041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9cbcd51d95461ed14c4adde67c1f79b78699fd8b6e6d53fd6ffa5e837b9d67. 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/BCIOS2300042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0278c8e4af0af99a9fd2944cb8943e4b41015d874b53c27b7e28632f05933c38. 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/BK0B52400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x072528d4282742f59b49bc942beba03741e3e0bdcd726766a6c2b40997b0b16e. 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/BCARG2300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d95efc5ab0ec09fa02c940c482203347ea09b07c286a6f1608241927237ef0. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/BK0B52400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x072528d4282742f59b49bc942beba03741e3e0bdcd726766a6c2b40997b0b16e. 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/BCARG2300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9cbcd51d95461ed14c4adde67c1f79b78699fd8b6e6d53fd6ffa5e837b9d67. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/BCIOS2300042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28ca972fdad0b4415ec4c853d478238e02d5851e36f80ad8da4977f3209926f4. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BCIOS2300041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc96e5217631f569bd3bbb04e34fa8781ca3c1c539fc167b908b53a5385e399ad. Chain 2 (Bitcoin): anchored in block 957025 (2026-07-07T10:59:31Z), 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/BCIOS2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefaf0bcca02849ed3b21c92be753ccabc9013bca3cbbaa40194f204133d86fb8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BCIOS2200034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49d485df8b8dcd5eb8d8b87902e0806772d72fb9eb236175f638ee2abe6b5035. 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/BCIOS2200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9211ccbe43cb61974605c734a26acba3b1403affeda80e1592b2c1fc34a72343. 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/BXXIP2300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc25006fb936b93e6ab302b01f450741d5e83eb19651cd42e889ec11374d7c8cb. 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/BXXIP2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x542c2a77c141cd9eb4d8bb8d05459a3e8b365eabccd766b8acdcd13f582d66c8. 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/BXXIP2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb528e5814ab61f7e8cb1902f13b729dba1e1f6efa8e429374b3a5a63bd0c5a94. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BXXIP2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90137670f3f91dbdc63759e30a92f0e539184f662efa43954360ccf96640c1c7. 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/BXXIP2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf97bc82045682d53d4fe9562a2ab239e84b7b1290323badbf3dab274f63c3952. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BXXIP2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e8926900cc67886f8678623d08546830cb2ebc42d7e1507c9bdd8ee9e3f306. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/BXXIP2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f98d6054c888ae0cad11c7958f3b5686f4256212aa713ddfdb00b0a494e5d14. 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/BXXIP2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x417d6148c96e98c184852c2d9460cc436ebaa525278643a5416cb745afca0110. 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/BXIV82373680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d12c0aea996d0b87267800674a418808e1697518ac556bc0d466d809f2b753. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/BCMJ12300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x674da613a51127f0473c55090b1c403f1c7bdaf612f72bdcf0887247f2c9dd9f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BCMJ12300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa301aa2a572460de43a1cfa58591d65c1725e80319a9340b3eff29163c27a959. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BCMJ12300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3b662b0b37a65c91f0f7a913dbaee24df88049ebf128bdbef313e0070cfed8e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BXBOW1800035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d12c0aea996d0b87267800674a418808e1697518ac556bc0d466d809f2b753. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BCMJ12300006.