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 0x9ce9ae78a11a0229fb6bcc7968eb71dec3e505bea3fab83e764289afcf6650ed. 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/f10d91e2-84f9-4d1c-925b-0981c7d1dedb.json and https://artists.proofprofile.net/proofs/artist/f10d91e2-84f9-4d1c-925b-0981c7d1dedb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
We Can Change the World - 2008 Stereo Mix
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 0x5128f302e3dbf0c7f498194de0add23167fe4062f99f36d92a1a44eab5607889. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/28s5iRbX62GZG2ReZTLKDa.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/28s5iRbX62GZG2ReZTLKDa.
Man in the Mirror - Alternate Stereo Mix
Chicago / We Can Change the World - Alternate Mix
{"copyright_id":"0x8004b772ecdd6539357425016e2ea3b02b1f29c0c2da1222e005c596181e6c62","isrc":"USAT20800974","name":"Chicago / We Can Change the World - Alternate Mix","registered_at":"2026-06-28T22:40:51Z","spotify_id":"21VzMSp9S7bVkryuN7LUCi","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8004b772ecdd6539357425016e2ea3b02b1f29c0c2da1222e005c596181e6c62. 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/21VzMSp9S7bVkryuN7LUCi.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/21VzMSp9S7bVkryuN7LUCi.
Oh! Camil (The Winter Song) - 2008 Stereo Mix
You'll Never Be the Same - 2008 Stereo Mix
To the Last Whale [a] Critical Mass [b] Wind On The Water - Remastered Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2885306b9fa0fce4c985ee879274ca3a3e0e2575c0a37173370c58d7b65161ab. 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/4LMtp2itq29cCv0w3I9omF.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/4LMtp2itq29cCv0w3I9omF.
Unequal Love - Live at Berkshire Performing Arts Center, August 1993
Liar's Nightmare - Live at Tampa Bay Performing Arts Center, Sept. 1993
Dirty Little Secret - Remastered Version
Chicago / We Can Change the World - 2018 Remaster
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x499385a740e04eae512dec380f87f153f58c32b2701c22dacf94f91f3d7b30a3. 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/2ewCRwDbr61fbMHv8h9PjG.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/2ewCRwDbr61fbMHv8h9PjG.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf281a1d1218135bd139c51425f0b6b2179d33138a73fbabdb6c19377639548. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3CYaqyik5HGJNAtA2OBKrK.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/3CYaqyik5HGJNAtA2OBKrK.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5128f302e3dbf0c7f498194de0add23167fe4062f99f36d92a1a44eab5607889. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7DydyjKLsJqHszemB3iFL5.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/7DydyjKLsJqHszemB3iFL5.
Introduction - Live: Hollywood / New York 12 Nov '88
Children Of The Americas 1988 Benefit Concert (Live: Hollywood / New York 12 Nov '88)
Teach Your Children - Live: Hollywood / New York 12 Nov '88
MC (Graham Nash) MC (Pete Fornatale) - Live: Hollywood / New York 12 Nov '88
Crow On The Cradle - Live: Hollywood / New York 12 Nov '88
Lives In The Balance - Live: Hollywood / New York 12 Nov '88
Rock Me On The Water - Live: Hollywood / New York 12 Nov '88
George Harrison Calls Graham Nash For The Telethon - Live: Hollywood / New York 12 Nov '88
MC (Graham Nash) - Live: Hollywood / New York 12 Nov '88
Graham Nash Telethon Promo - Live: Hollywood / New York 12 Nov '88
My Country ‘Tis Of Thee - Live: Hollywood / New York 12 Nov '88
Joni 75: A Joni Mitchell Birthday Celebration (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf09e83e681d730b5b7649bde5c293f007e9fafba43947f7b1938531f892e9d3e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3sKC93BGi6Ln4T0XbAIz7u.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/3sKC93BGi6Ln4T0XbAIz7u.