Sara Jackson-Holman is an American singer-songwriter based in Los Angeles, CA. Born in 1988 or 1989, she is a classically trained pianist; her style has been compared to that of Feist, Adele, and Lana
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 0x4ec35c70ac0b2248f9de6585cea95a8217c54b1cb1243766bb60c528075ff7c0. 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/ec9ad91f-b4b6-465f-bd42-d1e7e83b17f3.json and https://artists.proofprofile.net/proofs/artist/ec9ad91f-b4b6-465f-bd42-d1e7e83b17f3.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 0xc00da7522e9da62d83bb9481cac404aa93ad519aa000accfc40da615ff7cb0e9. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/USE6C1000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9769f9a67fc3cf27ef6c547e54e9f6be11fbceb011e2f301f209344c1bc07c31. 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/USE6C1000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff96ca9e26a8af397cf98caeab5229793dffaa66110d24c6e10be86a103a443e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USLN71200803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad81c43c3520173369645c5e877fd3b7305be3b6fc2096ef75a5f23d4ddedf0. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/USLN71200811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5458b1064428036dcac2a92c755095b4e6abb08a788a72e61c0fa860e2fa67a. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QMFMF1599972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x725096d3d79ebda55f15bc0199f69dc6335e872c1167d864fcbe5b68cf65d9fb. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QM4TW2040460.
Orange Is The New Black Seasons 2 & 3 (Music From The Original Series)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3d2db19510b9e3b486961aa23d5f6f95fa8c68fbe85e0f63f9ee5f1ce137313. 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/USE6C1000003.