Elizabeth Vanessa Harper (born 1982 or 1983), known professionally as Class Actress, is an American singer, songwriter, and record producer. Class Actress was originally conceived as a trio, consistin
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 0xf63f3d2651b7a209113b60ac93988dbfddb535e0338c30e1760b3f88d606649f. 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/ac29793f-ac4e-4ca0-8012-0931970edbc5.json and https://artists.proofprofile.net/proofs/artist/ac29793f-ac4e-4ca0-8012-0931970edbc5.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 0x9cbc214752f43a3bf1748fd1b97282ce793452845bccbc7d6481e3efff1626ae. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/FR10S1446858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d9217039b059351ec7dba3e4f7c2f583a111c977f36a89545c665573ac726f5. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/FR10S1446860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c9e23dfc4aebc70d5aef6f6de0e3821f879bebf45220c5ceb041c3b24d9c3f. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FR10S1446864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3976757d7a562dc03d57bde4f582596bc39eeef6c75d735fc04576308d51efd. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/US22N1106504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x748af4c763e316bbcedc25068b8914eafcd4278d8864861509d8208b383ec015. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/US22N1106505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80fb096eae81bbb4b9dc92d0d9c0b9e15abfa4c0d1c647b072264ea863bcc795. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/US22N1106507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9779c3595c557fb7e80ab5946330e37d1b1cea812261de3173c18c005700cd72. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/US22N1106509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3847fc1aba89050f84cbf36becf7ce442733aa006717112b4bf52449cc9c2de3. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/US22N1106510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db86fc69cef45fca14f631954381aae2223fb9b09ca180639f378df9df077e2. 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/US22N1106511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cba9d6c258611a3e9d81b7dcad7bd9e99490ec03059d0694dc9dffbfacb3352. 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/USUM71506864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fcf318c2dd1193ffeeb414577310154f7013ab56fe8b6b0dbca64e175d32206. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/USUM71506865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20b1f5519c588a5fe4a80b4d2d04bd7b48d873c64751020da2a2b2d32773c266. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USUM71506867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c0954b360121d2c9d1d97c22e9b5adf4052972a23c61627d8bb65750a74d054. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QMFME2029378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12be6d4958cd919c3fb84b7d851c44bde8190f9093aefebe700bc803b4c0315b. 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/QMFME2182916.