Martha Harvin (born January 8, 1945), known professionally as Martha High, is an American singer-songwriter. High began her career in the early 1960s as a member of the female vocal group The Jewels.
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 0xf02ff6d26807142bd2b3ab09e4c8f5e1ae4fea59f61d7e4d5ceddc21c033bd91. Chain 2 (Bitcoin): anchored in block 953758 (2026-06-15T07:48:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b3731687-9231-4613-afbd-cf4906a67f7d.json and https://artists.proofprofile.net/proofs/artist/b3731687-9231-4613-afbd-cf4906a67f7d.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 0x33b36f70168746fc78cf68516c977fe9207f8c924945da54822d1b95ebb6748b. 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/GBJSH1229604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e88d34f71a47ff0b15cb50f3384aa622886248a0025df0e22a4257ab689f410. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/IT2XM1600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe79723fd8cc3abce809b1e13b3a1c936128b341d35f2f488a3fa651f55a624fc. 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/IT2XM1600010.
A Little Taste of Soul / Unwind Yourself
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad7ce5ac65b5fe349b43d8c2877fa78e4cc09871eb412a14187b4c93799a26d. Chain 2 (Bitcoin): anchored in block 959018 (2026-07-21T16:48:52Z), 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/ITG581700015.
Soul Brother Where Art Thou?, Vol. 2 (A Tribute to James Brown)
Soul Bother Where Art Thou? Vol. 2 (A Tribute to James Brown)
FIP, Vol. 3 : La playlist qui rythme votre vie (La sélection musicale de FIP)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea4fa54c4015d27a904bad453d0c6f981c058d753a5267a87482a1ab42166a30. 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/USPR37780227.