Foghorn Stringband is an old-time string band from Portland, Oregon, United States. They are considered one of the finest old-time string bands on the West Coast. They are noted for "intense dedicatio
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 0x9b9950877efac0ecd71aa81acd408404ab3a20df316926854e12e87c7e03a940. 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/3f4c8349-8fbb-499e-8637-c1a5941366ac.json and https://artists.proofprofile.net/proofs/artist/3f4c8349-8fbb-499e-8637-c1a5941366ac.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 0x6727881f10bb64d4e75f5a1b0ddd4b0e44038fe9c19a4a579edee7f8b1d1e552. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USHM20450148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c9c697c6d3e26dc46a43ba41a51af4e3293321ec40b1187174e53e00879ea0. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/USHM20450150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf03434e482fde37f4808683e0e82c8a39cad0d6f274a07ab6a012a70703cb399. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:09:45Z), 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/CAN110500078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cdfe9db0bd859c51e0948aa695dbccb3d8e53c5ee2d3d6c684f8325cc1e9ffa. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USHM81210787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb18485ce64ef1b7e35d7479fa2eeec8aef3213bbfe8a10da0444ae8070b6a0. 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/USHM81210793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1516461bc74ae01860c44b44f14452fc4b529b9b08129a6a24d9b513de401d75. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USHM81210796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb61d30a75eaf5002de80303bb6c47a732ee116ccbf46741a8dceabd3ea7d0ec2. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:35:25Z), 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/USCGH1544642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9004c69f9b3990f8a5e8229946d96b21d824fcc02f001cc1f1b43522773e2d76. 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/USCGH1544647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc98cf9ca46775f4c3fe9192bccaf5e9caf26e538aa6dea980f67499c63e0066. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USHM91835919.