Solea Pfeiffer is a Zimbabwe-born American actress and singer. She is best known for her role as Eliza Hamilton in the first national tour of Hamilton, which she landed after performing as Maria in W
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 0x87a4b576e8f07fa4ca3b327903627bc8add628fad95a99254348fb1821eb5588. 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/34a4d31c-cce1-41c8-9cf3-a60f7515695d.json and https://artists.proofprofile.net/proofs/artist/34a4d31c-cce1-41c8-9cf3-a60f7515695d.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 0x4c2b7e03a4a04e938035430bcb1ae51667a7a2f6e9aacd24ef2d7f35d2d1f8f0. 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/QZPLS2249033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba812af9937a750a11a87c9d37ddb875ff3ea11114c314052bea0e97138c56cf. 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/QZPLR2205759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc23600dc70fe1b048f66f74ce4c6fe8c3169b49e77b535b5c432147d1597108b. 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/QZPLS2249031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55dfb727d36ecf9ad15304aabcea67762ea3ca72d0a1bad68b69484d0daaf699. 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/QZPLS2249015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4080658c84a52c899f8d15383b45606e2a41f6a5e62c56494088d5267269808. 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/QZPLS2249016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43bbc7a8043c830f1577a6f81bde584a23ff5b1969152bbb8d01815ffe7e530a. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZPLS2249030.
#IWriteMusicals: Musical Theater Songwriting Challenge (2020 Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31adb3ccb8f767c21141ad36602d644ac9baaead2d4d2cc62c1c785287cb3aad. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBMA22174526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x667993225599e1f4b372063e7541ba3738f0df75b904492d3afa2f8bad792c28. 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/TCAEB1917794.