1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x737dc4c9ae969b0f609ee8bb65bdf053c791ddafd61645b4a27145e690516f02. 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/1e363127-b612-4766-b935-cc76ac35a4a0.json and https://artists.proofprofile.net/proofs/artist/1e363127-b612-4766-b935-cc76ac35a4a0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xabf089e51bb7b2153d1d832d64e0a611510486b61e1a4d06025cfd8f064531d7","isrc":"USEE10182113","name":"What Did You Learn in School Today?","registered_at":"2026-06-29T11:04:04Z","spotify_id":"0Eh8BxmCBgHGrhYOwyDKx6","type":"track"}
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf089e51bb7b2153d1d832d64e0a611510486b61e1a4d06025cfd8f064531d7. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0Eh8BxmCBgHGrhYOwyDKx6.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0Eh8BxmCBgHGrhYOwyDKx6.
John Ashcroft and 'The Spirit Of Justice'
Hobo in My Mind - Live at the Marquee Club, London
When We Were Good - Live at the Marquee Club, London
Who's Been Passing Dreams Around? - Live at the Marquee Club, London
When Annie Took Me Home - Live at the Marquee Club, London
Wasn't That a Party - Live at the Marquee Club, London
Faces and Places - Live at the Marquee Club, London
When You Shook Your Long Hair Down - Live at the Marquee Club, London
Silent Night - Live at the Marquee Club, London
When Princes Meet - Live at the Marquee Club, London
At The Navy Pier Auditorium, Chicago, 7 Aug '80 (Live)
Looking For The You In Someone New - Live
I Am Changing My Name To Chrysler - Live
We Can Have The Olympics Over At Our House
I Am Changing My Name To "Chrysler" - Live / 1988
On The Good Ship "I've Got Mine" - Live / 1988
We're Filling A Bottle For Ronnie - Live / 1988
Lyndon Johnson Told The Nation - Live / 1988
I Don't Want A Bunny Wunny - Live / 1988
Spoken Introduction (Bob And Tom's Collaboration)
The Best Of Tom Paxton: I Can't Help Wonder Wher I'm Bound: The Elektra Years
{"copyright_id":"0xabf089e51bb7b2153d1d832d64e0a611510486b61e1a4d06025cfd8f064531d7","isrc":"USEE10182113","name":"What Did You Learn in School Today?","registered_at":"2026-06-29T11:04:04Z","spotify_id":"6EuFiTYGuPhBgo6Wj1iDU9","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf089e51bb7b2153d1d832d64e0a611510486b61e1a4d06025cfd8f064531d7. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6EuFiTYGuPhBgo6Wj1iDU9.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6EuFiTYGuPhBgo6Wj1iDU9.
Jennifer's Rabbit / I Give You the Morning
Introduction/Best Of The Vanguard Years/Tom Paxton
I Lost My Heart On A 747 (Live Broadcast 1970)
Who's Garden Was This? (Live Broadcast 1970)
Annie's Going To Sing Her Song (Live Broadcast 1970)
I Give You The Morning (Live Broadcast 1970)
Talking Vietnam Pot Luck Blues (Live Broadcast 1970)
The Last Thing On My Mind﻿ (Live Broadcast 1970)
Live in Portland Oregon (November 7, 2017)
My Dog's Better Than Your Dog (UK EP Version)
The Marvelous Toy (Alternate UK Single Version)
Live At WQXR Studio, New York, Sept 9th 1981, WQXR-FM Broadcast (Remastered)
I'm Changing My Name To Chrysler - Remastered
They Couldn't Take The Music - Remastered
It's A Long And Dusty Road (The Netherlands '71)
Can't Help Wonder Where I'm Bound - Live
Forever Changing: The Golden Age Of Elektra Records 1963-1973
One Time and One Time Only - UK Single Electric Version
Where Have All The Flowers Gone: The Songs Of Pete Seeger
Kids, Cars & Campfires - Featuring Greg Brown, Bill Staines, Suzzy Roche, Chenille Sisters And More