The Groundhogs were an English blues and rock band founded in late 1963 in London. Named after John Lee Hooker's song "Ground Hog Blues", they were part of the burgeoning British rhythm and blues scen
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 0x0b50f201e67ca3cb27693c30e903c003ff4d27b5d60bbc77394ac49e5a36403a. 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/3c81bc5e-0581-4f33-8a94-14fae25d2379.json and https://artists.proofprofile.net/proofs/artist/3c81bc5e-0581-4f33-8a94-14fae25d2379.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Scratching The Surface (1996 Remastered Version)
Blues Obituary (50th Anniversary Edition)
Scratching the Surface (1996 Remastered Version)
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 0x7315ff40cbff4a1981c69c55dbbcd48dddacdb0a47e46d4096a55917843802c2. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/GBAYE9501267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f60f09769ac84aad07103f2c3788e351cdd01fc3a9d2bc29bd999ff75e7d910. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/GBAYE0300920.
Darkness Is No Friend - 2003 Remastered Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc710f69608c0b2ea6f0f4487bc7c74b481b1532355c6dfd3b0258d0928416b76. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/GBAYE0300948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a3dd2961eacc1059220ff727ec8346efe3c4966a6a722c4768a83b6865d2b78. 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/GBAYE0300921.
Thank Christ for the Bomb - 2003 Remastered Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x954446736b353c19ef8ac96868ef2df12cd0da068406e7a07740028fe8f8709c. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/GBAYE0300922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee2e1c4388c97c753c7aa8881676cf64650aa4840e120a83578879e4650e66f. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/GBAYE0300924.
Thank Christ for the Bomb (50th Anniversary Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc710f69608c0b2ea6f0f4487bc7c74b481b1532355c6dfd3b0258d0928416b76. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/GBAYE0300948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x954446736b353c19ef8ac96868ef2df12cd0da068406e7a07740028fe8f8709c. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/GBAYE0300922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6abd90acc63a61ffbd214b781c74f9dd46fbec5b526a3e4fc3be0aa9ca5e9fc. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBAYE0300925.
Rich Man, Poor Man - 2003 Remastered Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfdb5ddae05e52e3717a8d3100d1247e36af69612ee3e49cccd21f88812bfa48. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GBAYE0300926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924351bb0125e72898e1fa6d711bc14791c39a6874888aa6d4da8eb87c9c7c87. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBAYE0300914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f8e4c124e5c986ad1cbed5c257c462441b3ca257a406c2f1674800586f60481. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/GBAYE0300915.
A Year in the Life - 2003 Remastered Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b2914c710538a333923cdbbb9f1e9f81b571e2e87d1992ec71c73ab4b0941d5. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/GBAYE0300917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6906555dbb9ebb1a81bd45d174bffed31e2af19955733a2cc8cd695260bb62cd. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/GBAYE0300918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a698eef83b203b394cca2b46dfb81ce7b3603d73e32744d745e1d008eeb4549. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBAYE0300919.
Who Will Save The World? The Mighty Groundhogs
Who Will Save the World? The Mighty Groundhogs (2003 Remastered Version)
Who Will Save the World? The Mighty Groundhogs (50th Anniversary Edition)
Earth Is Not Room Enough - 2003 Remastered Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d493b2e2429739bcac29e35cd4f08fe9f8b1936e2351019f2a6a1c38a44038e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBAYE0300892.
Bog Roll Blues - 2003 Remastered Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0d8d4ece85d292de97ff9cdd702339337e2cb3f77cb7c4de1c8747ae8f70f39. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBAYE0300896.
Who Will Save The World? The Mighty Groundhogs (2003 Remastered Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a9e9b3a2d977a1a1ef0b3f99d4ecc69977729b06aa55a7be4766ed6369cd7bd. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/GBAYE1300387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x814caf28602c56e1147d9365b624ea650401b4da8851c3274bf4f5f0326c07ee. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/GBAJE9800166.
Boogie With Us: Classic Live Recordings from the 70's
The Groundhogs - BBC Session (7th December 1972)
Thank Christ for the Groundhogs: The Liberty Years 1968-1972
Thank Christ For The Groundhogs: The Liberty Years 1968-1972
Thank Christ For The Bomb (50th Anniversary Edition)
Who Will Save The World? The Mighty Groundhogs (50th Anniversary Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a5d7c803a39bea02b1d9ebb64a2a47e37b2deeb691c584e6d5a2dd38c3b6a5. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/GBAYE0300916.