Endless Boogie is a studio album by American blues musician John Lee Hooker, released in 1971 through ABC Records. Produced by Bill Szymczyk and Ed Michel, the double album was recorded at Wally Heide
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 0x43dcdd4f819730ebb7e0c9a665d156ab86ecf4686c8d92e59cbaa1ea12b25128. Chain 2 (Bitcoin): anchored in block 953695 (2026-06-14T21:42:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/72b850c2-69bf-4f80-99c1-92ad6722f8e7.json and https://artists.proofprofile.net/proofs/artist/72b850c2-69bf-4f80-99c1-92ad6722f8e7.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 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 0x53f30937ae3171deb526824691621397b38cb620f231ad6cac09ab21ff80fe2f. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/USLKU0813003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5bb2462ae04f6a705ebe6894ae02aba65df2591ae5e9a64a312cdeb7362db01. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/USLKU1024001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x189078a5230846c150ae1fb960f3ff3eeb3f3fb4b6bebdb3878eb9ba633e4d36. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/USLKU1331001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aa06e826f732a9d2c9a600b5953872233cd2079f8b987a38cd764dcb7189b11. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USLKU1331002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c4468701e6b325bc258e9aee408ab831ed4ee4aec46a8b4c944e3a7a8cbdec. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/USLKU1331003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f0704c6cc032c2fd992846f1027025124d833f6fd10a39f24ba193e2934fc6. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/USLKU1331004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568df124b8d976f287291b943c9858e1d00a930c4b0e650d44e42c97d6fa011a. 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/USLKU1331006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf5e2aa2f03ff0bc94a96f6ae00317afc7ee6ee0e49aeba9617aaa1c349d4bec. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/USLKU1752003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeafb5350da7f73dbeaab5098c30d43f6dfe2899b5c749fa7cb1ac33035ca020c. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/USLKU2174001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa654c808178ddce8465a0e53b9833565a2faaa1d73517ff3740d8d8f24fe84cc. 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/USLKU2174004.