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 0x187561da7ec64b70238945fb995d197d48dc2f7ce141a9cb078c3bb5d7e86ad4. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dae08dd1-e9fb-4fa7-a857-6cb5359e46e9.json and https://artists.proofprofile.net/proofs/artist/dae08dd1-e9fb-4fa7-a857-6cb5359e46e9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
To the Last Whale; / Critical Mass / Wind on the Water
To The Last Whale (A. Critical Mass / B. Wind On The Water)
The Best Of Crosby & Nash: The ABC Years
To The Last Whale... A) Critical Mass / B) Wind On The Water
Immigration Man - Live At Garden State Art Center/1976
Lee Shore - Live At Syria Mosque, PA & Shaffer Festival, NY/1976
I Used To Be A King - Live At Garden State Art Center/1976
Déjà Vu - Live At Shaffer Festival, NY/1976
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 0x988376580e28c59ea4d284ca6367e29f4d2bd7e0b9bb17ee50823bd7c6d7fe82. 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/1OOGywhvtBYUPiPOlWMO3B.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/1OOGywhvtBYUPiPOlWMO3B.
{"copyright_id":"0x9c3060c4efff17b3a924f07d067800cdf27adc265544078d314ee24fdbd6c273","isrc":"GBAJE0400623","name":"Through Here Quite Often","registered_at":"2026-06-29T17:55:20Z","spotify_id":"3EdqEJZPi03yVFbaiiEwI1","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c3060c4efff17b3a924f07d067800cdf27adc265544078d314ee24fdbd6c273. 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/3EdqEJZPi03yVFbaiiEwI1.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/3EdqEJZPi03yVFbaiiEwI1.
To The Last Whale: a) A Critical Mass b) Wind On The Water
To The Last Whale / Critical Mass / Wind On The Water
To the Last Whale Medley: Critical Mass / Wind on the Water
To The Last Whale Medley: Critical Mass / Wind On The Water
To The Last Whale (i) Critical Mass (ii) Wind On The Water
To The Last Whale a) Critical Mass b) Wind On The Water
To the Last Whale Medley (Critical Mass, Wind on the Water)
Crosby & Nash Without Stills & Young - [The Dave Cash Collection]
Medley: To the Last Whale/ Critical Mass/ Wind On the Water
King of the Mountain - Live San Francisco
The Last Whale: Critical Mass / Wind on the Water - Remastered
What Are Their Names - Live San Francisco
To the Last Whale / Critical Mass / Wind On the Water
To the Last Whale / Critical Mass / Wind on the Water
Only Love Can Break Your Heart - Live 1972
The Needle And The Damage Done - Live 1972
Everybody Grows (Live San Francisco '72)