Mark Lindsay (born March 9, 1942) is an American musician, best known as the lead singer of the rock band Paul Revere & the Raiders. Early life Lindsay was born in Eugene, Oregon, and was the secon
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 0x0c07de5311acb2bf3aebea13535de1f7a861d58838de5aa1ada548ca8048662f. 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/d637586d-1201-4b1b-9713-ae2658913904.json and https://artists.proofprofile.net/proofs/artist/d637586d-1201-4b1b-9713-ae2658913904.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 0xee5c3303b916612aa6af6813cd8f48912e88b733064a49986e2399d1b634dd5b. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:10:20Z), 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/USSM10705025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5772a751b75e6d78ba54e053a119b67c0c2b9d8f8188bfba2bb6a69c4fdce3f7. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USSM10705028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f15dae497da26f6994de244f8c8aaf716200879c434a75d9f83d9027d3b664. 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/USSM10705033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe31a477acb8df6ff684a3d57aff510ab36b3617254e3eef8b75b955a4f5403ca. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:32:28Z), 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/USSM10705034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x724b2fba35dc98d903fc0bbe0c5d317b2a39b4c649c23e56574b7cd853ec6d50. 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/USSM10705036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16323212154f5f161529e9b960d0167f2a327b4d013398eb9e9929dd7c61e560. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/USDEI8204298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e0969639a5798ea1fa25874801c27e471e49c4d5961faefbb16aac34b1a38c. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USSM16901581.
Quentin Tarantino's Once Upon a Time in Hollywood Original Motion Picture Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c832f0c3f4891cf32a99f109c49451adbbba29cb019d77cab5211aeb90fcbf. 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/USSM19907221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb88ed2faad986a4169b8b706ca14741dc09e32815d82379325241201ea1f6f21. 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/USSM19907222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f53eca10f32ae29ba61dc728f5de791ed4b800da7e50e47fe00025de98786da. 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/USSM10021640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80fe1a3d1868e61843369dab602ba47d2af7bd4d6fcfd7034fb9d1330fc57910. 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/USV351317693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9229ab7a1b53c19c75c60034a9e2639d8141bd741b13ab514f227c03e05d941. 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/USA371021714.