The Chambers Brothers are an American psychedelic soul band, best known for their eleven-minute 1968 psychedelic soul hit "Time Has Come Today". The group was part of the wave of new music that integr
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb110afed1de5df1ed04213370401c2529c3c83725adfc10bc48485e42442caf. 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/f199b227-dd7c-49e1-825c-3f5280705d42.json and https://artists.proofprofile.net/proofs/artist/f199b227-dd7c-49e1-825c-3f5280705d42.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x994f056b0e3349421ae28ee4f237799bc46774c3d3ef4c25cd5b999e0907400a. 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/USRH10722032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01e6152acd6cf0db5242c97d8343ad59b22ceebfe600deeb4fcda79e7729dceb. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/USSM19917180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd975517ce17d617a787dcbefb13c72a56c6ccd46a3aff4fe65d5e8a74b994e8d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USSM19917181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x498e8fe871d0acdce8db0226692c9a9edffa97972870c17fe9b5b412c0950596. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USSM19917182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88657daa05cba53b45c33814e7b3c8586201edb6dbe50a9f22eff73b7eb80533. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/USSM19917183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcd127be745f51176cffa74b48c1381c9d0f62c6ef51b1529e78ab84d01efcf3. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/USSM19917184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d12f89bf84334a6f9439ad81f6fafc3af302755f826566b521c8983947a8c2f. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/USSM19917186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be86ba8816a884fb8dcf4a558efddac9829294e62fad858f8c4edcfb02b468f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USSM19917187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf11bedf82fa86e97a860193502f0904151dda936ba30de26341d598179abbfb. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/USSM19917188.
Time Has Come Today - Alt. Single Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa48d39e95b3dbba60eae99ab6ae5dd5a29747c0f91b1bfdc0a3cf5316e6b141f. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USSM10009962.
Love, Peace and Happiness / Live at Bill Graham's Fillmore East
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a4055e29e5905314d3a794d71bc496ff7a18883d11055c79e4f28a16605dbd. 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/USSM11508613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd678ec5908b20b65b7ab0568aa2766ef4dd528b6c3f9b111e6c8bbf5825dedd. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USSM11508607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51bf007193b22cdb36dbca14cee5254943ba708d38f17c7c25c405183fc9c5d9. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USSM19917172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e5be0cc0fe653574ed1d5896a9a300760e5e65266d446b605442bf7b279cec. 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/USSM19917178.
Time Has Come: The Best Of The Chambers Brothers
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba072fe1fe174eaa9a4b6ec8a92226985afa40b55a83f659fa0e1e24713db81. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/USSM16600078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x748f62906469904eb0f9c958dfdaa1acb16fa00769f04be8346ea97ff4c33d6c. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USSM16800088.
People Get Ready (Performed Live On The Ed Sullivan Show/1969)
Wade In The Water (Performed Live On The Ed Sullivan Show/1969)
Feelin' The Blues (Digitally Remastered)
The Chambers Brothers San Francisco Live
The Chambers Brothers '65 (Live In San Francisco '65)
The Chambers Brothers Live In San Franciso 1965
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x709b2bd6ee0a16091ccc1f787181cd5f144a690c0bb7126cda11da7ef590c13a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USSM16701099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9adf8ae8068eceeca917064bc844b2506b5ff7234bec633c75587c8e00e63fe. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USSF11722706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7829d4caca4b51520a2db811612b89d44d1c2c16231f80675e06ad6e63881e97. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USSM12407156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b7497a1b89227e656b0207c714eb2ef858442d62ed3f23f92b47e0529f3100. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:11:13Z), 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/USVG29506266.
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
Classic Harmonica Blues from Smithsonian Folkways
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b244119951270d63f50e6fa2b290dc86d5f87991bc3f7d21164fd9fcf054ecb. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/USSF16800801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f71f12556d9a71a71387c44ade7b170fb3fcd205403c30f4d55b8057d990fdd. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/USSM16600075.