Two Tongues is an American indie rock side project/supergroup founded in 2008, consisting of members of Say Anything (Max Bemis and Coby Linder) and Saves the Day (Chris Conley), along with David Solo
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 0xdc58515442d84e605c7033ac37b9bcb262c833cfbf9b3f8fb248c53186496d95. 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/d2eefdf8-c90d-4b96-be51-bb08f5ba0012.json and https://artists.proofprofile.net/proofs/artist/d2eefdf8-c90d-4b96-be51-bb08f5ba0012.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 0x5bfd85eb115c5a0153a189249bc2366a5d71365ef06c0b5fbd4dbac78a6ddb3e. 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/USVR90852801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a8471d46395f7b35e8480798bcba528a4559e478546470c819f1e298e43d278. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/USVR90852803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ffbe6a7fc81df8b54cb1a068fd513295d370f75475686884da5e270d44ac41. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:04:44Z), 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/USVR90852804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2cd79fa5f0758440f23ae25173dd2d1f5e9a7801b73aa292530332d4ea37b7b. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USVR90852806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd661e667035cc72a0183a8b4bd2942ad208fc0067f984d1eac4f0b7ca745f452. 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/USVR90852807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cd6946c2910f578552f88c37c17636bebc16ae74dfa007069fed3345fb48b70. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USVR90852809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed7de1725b44856f020240006bb25d42370d25658771e740b65a7cb88e1989dc. 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/USVR90852810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0592b5ed177b050cf3b28b77d89ede2f4b42e4ef750c9879063bf92134aad34a. Chain 2 (Bitcoin): anchored in block 956426 (2026-07-17T08:57:20Z), 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/USVR90852811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d2f0d61042a72c65917c6fd56357f70cd48a3f93569cf411fcafd81e1fe721. 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/USVR90852812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73eb6e60a5f9d947122760b7e1e6fc194590e886ebf713c2dc23706ffe17d431. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/USVR90852813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef641536a999aad51522eaacafbab919c22d28ab0b7c84aa94ef2daa48c4f983. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:22:26Z), 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/US3X51632901.