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 0xd23d29a6dea7952ea1eb93cf2fdd632c84953d141034bdd2b53fdf1b9dacc55c. 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/fd470878-bbd5-4ee3-8050-5973979669e7.json and https://artists.proofprofile.net/proofs/artist/fd470878-bbd5-4ee3-8050-5973979669e7.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 0x041e793c23d4423e8c44989a399bde657943d035d71aa622207d3a6a4a202f3b. 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/USVG29106893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9111bca30c53b8aebc5b1319e8dfcf868ce919264385c49082a1ec361562277. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/USVG28807019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e3adfce6b7666185679a9127e5e43e64e60697573c471f9eac5c3e6b20bfbd. 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/USVG28807021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2225cdd75368f04015ea031eda0f79c2fc00f18c5b1dec99f2f8d1dae6025036. 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/USVG28807022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8672eb7f7125c213ee66e6385342b83f02380786d007a2217a9b9e8d7ecc1214. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USVG28807023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dffc035e565f1c966008b99fbd9fc23fbaa35f1fbf893f52f5e10e15b0f926c. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USVG28807025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8023f97be2ca7a99334715285d3e0f98de3dabb15c987c7a2596673d9d6483a. 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/USVG29206899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6221ffaf71ed490cf9faffb18427d7c82fd70ae32e40635da792ee0cb227c33. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/USVG28707338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x950f150a3e6396651751ca17af2787987f59d400410225c5b97e06e7aeb088a6. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:10:29Z), 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/USVG29451816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x813927ca90f908997d13b5554cbacfbcaa2ba106e5768b067c492786a4f554d1. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T13:45:02Z), 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/USVG29450898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe581aab0b72fe7944e83e5424d31e65aa0eb4be6a925879929ef1adf46a35483. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USVG29451689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8176ecef2d4e3b267374404019534385aa7c27cdc09cad513fa084914264333. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/USVG29407340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x217c27a7d856bd3963d083da1f8f8f86bbb5ddd1536ff5bf575ce77c117e15f4. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/USVG29451691.
The Life And Time Of Country Joe And The Fish From Haight-Ashbury To Woodstock
The "Fish" Cheer / I-Feel-Like-I'm-Fixin'-To-Die-Rag
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35f76ceb30a82052f06afdd3571be481d9358eca453d15bbd8c7ce3c72823e44. Chain 2 (Bitcoin): anchored in block 956485 (2026-07-03T10:53:04Z), 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/USVG29107018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35f76ceb30a82052f06afdd3571be481d9358eca453d15bbd8c7ce3c72823e44. 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/USVG29107018.
エレクトリック・ミュージック・フォー・ザ・マインド・アンド・ボディ
Flyin' Back Home Again (San Francisco Live '68)