Quicksilver Messenger Service is an American psychedelic rock band formed in 1965 in San Francisco. The band achieved wide popularity in the San Francisco Bay Area and, through their recordings, with
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 0x7d915ee72944575390d645236db1b8b390eda25af2e36a708b6e76222501cfae. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c5b7e12f-d9e0-47b7-8ae8-783634782e6f.json and https://artists.proofprofile.net/proofs/artist/c5b7e12f-d9e0-47b7-8ae8-783634782e6f.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 0x5fd270bfc92b608583efc718118613c98dd53ca0691db18d2b0d9ab4eabf6e2b. 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/USCA28800970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c2be8d7883ca81cfeb17ba796fa0f95d77dfeeda5b300d7a4afe507dd429596. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/USCA28800974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x739c8d362fd3949bc138e0260cfa75bf5fffa5fe23893eda3736be116236701f. 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/USCA20802697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2153f44077dae5493395f74b141dcb3110d024657969c9eaf508794abf3a7b3. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:47:20Z), 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/USCA29101158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524aa0e01e0ae4290b15b64004a631c64a2eb6feeee42f09bae9c8dc344c2043. 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/USCA29201351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9fa232563f6bb232ff21f54c09b18b9cac57f9f059f13b963dcfd522bf7a157. 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/USCA29201358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95ef0e7dc7cbc69cea488b4a518fb3f70efc3f01970038dd141dcf3f82c260b8. 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/USCA29201352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e891170096c8c6314897ef9f662c9bdfa278fe878d5462e426dc220a909bd6. 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/USCA29201353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x174a6313992b5e64c93fcec9c6503ab640bcf6d9c545390aa5f9d4c6ba097a9e. 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/USCA29201354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9ee3b9d2970dc3e2d935f80d87f96258a2f7150c5cdffd257c9bd649daabadf. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/USCA29201355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45114bba40c40635c6cdfaa0c81fbd5668cd65cb2e58ff67b19c14ab0dbd2abe. 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/USCA29101163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55bb6e048c6ddbb599481cc92210b0b5b84030556d5d1627b709eb027408698f. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:41:04Z), 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/USCA20802655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc45b91e8f2c032bca94d89f6ce6438910c04d181fb294848e82f05b67568196d. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/USCA27000189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedbed2f2ee6c7fe6ee2c9bef4e48858aa561ab68578fb807a0310a9bf57f0c49. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:00:49Z), 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/USCA20802691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca4cc5eba95875a8d4ca1b1df88caed442a46749f82f33f851a91938301b3a3. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:21:48Z), 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/USCA29101164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63efae8b365b126c273d6dc7ec54d2f6b0157fc1efddad6b6089923e6bf66edf. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/USCA29101166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee1951e04f6550e613737e2d44653771b9d3ff9212df0830b361ac8acb9b5d9e. 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/USCA20802665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ee52ab566023b62064c77c0d5cfbe4291f85db250b255bb5e64213680506e12. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:06:19Z), 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/USUM71811953.
California State Correctional Facility Blues
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14c2c4558b7418f52796775319725ebeef9783ec820c37e103ae14ec1bca7bdb. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USCA27200095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c6e3323f77c355144be20e4543babb7fecbf543aa9852ca8af3acc6e3ceb229. 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/USUM71812005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9bfe3bb45c31c2856e0fec607d2ea8d830476d338feae7506753eff2ce81561. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USCA20200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb586c2a7f127690c956b227f67537f4dddb0ba4d6ff44097c57f6f0ca86d17ab. 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/USCA20200005.
Live At The Carousel Ballroom, San Francisco, 4th April 1968
Live At The Avalon Ballroom, San Francisco, 28th October 1966
Live At The Filmore Auditorium San Fancisco 6th febuary 1967
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e67e0d48e8cfd951f4d324d19502acc31266894975e74e2ebb043f61e6ace6. 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/USA371187258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ffff6df395dc215c623ffed42e5496d0cb9a11b99bff6f9bc85223843fb8a7. 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/USA371187260.
Live At The Avalon Ballroom, San Francisco, 9th September 1966
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41f51db4b2fcd2effb0c36ef0d69aa15d3a6522eacdabab179af3c423f38cb4d. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T19:03:52Z), 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/USA371481105.
Live at the Carousel Ballroom, San Francisco, 4th April 1968
Live At The Filmore Auditorium, San Francisco, 6th Febuary 1967
Live at the Filmore Auditorium, San Francisco, 4th February 1967
Live at the Avalon Ballroom, San Francisco, 9th September 1966
Live at the Avalon Ballroom, San Francisco, 28th October 1966
Live At the Winterland Ballroom - December 1, 1973
Live at the Old Mill Tavern - March 29, 1970
Live at the Winterland Ballroom - December 1, 1973
Fillmore Auditorium - February 5, 1967 (Live)
Stony Brook College, New York 1970 (Live)
Echo Through The Ages (Live San Francisco '73)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea631364eb5518e492cf4b6dd23ba8aaee318974b4696cf9e80497751701841. 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/USCA28800172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a46a31e6ce53269c8bc5925036a7505900fdf78c909f5bcb6e85bcd3daea45f. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/USCA20200011.
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