Matmos is an experimental electronic music duo formed in San Francisco and based in Baltimore. M. C. (Martin) Schmidt and Drew Daniel are the core members, but they frequently include other artists on
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 0x686df50e2a67cfa049ded48608ef9debbf74b498f6b634a911ed5f82a917fd49. 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/64675751-8649-49a7-ba3c-4b70a4af49ac.json and https://artists.proofprofile.net/proofs/artist/64675751-8649-49a7-ba3c-4b70a4af49ac.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 0x74b989060e89867db863c2e8032875a7244f1c59b6ee9ec23ae275e387a9a69c. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T13:02:46Z), 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/USMTD0148901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2fb0aa671b4ae34eda1cd8cee98218848abd2a5a493661ccf6780089d60d7e4. Chain 2 (Bitcoin): anchored in block 958204 (2026-07-16T00:31:10Z), 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/USMTD0148907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc21c20b0823dcbd2aa56a5b4d7068f9a65f862c94486de1986df497cf7f636aa. 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/USMTD0359001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78817939dc65dbe833b85265c657d49eac0abd855861ebc978607ef56b8aa2fb. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/USMTD0359002.
The Rose Has Teeth In The Mouth Of A Beast
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe567479be7c1c4b412417ab0e358ea5a19fe91ae1681702535594f7536bce55b. 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/USTJ21540102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaf0732d64ac15bf1a6b14d07ca5a956e5a678d8a2be5031d6fb9c76343bc656. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USTJ21948201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0fff72b8b92c15c1b2728355e67b0a00fa4240e39bb66285bf5b7ad7b1b4960. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USTJ21948202.
The Consuming Flame: Open Exercises in Group Form
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8416d6110f4089fac878846959b7c99f929e82732435b4c7c3656a2fe123aefb. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/USTJ22052601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f72fb0494e4b211a9fe30860cbdeab7bee12d0b04d90e396bd6fe3015aa1dd9. 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/USTJ22052632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d5c80c0ef07e972e0667d004611b9a5a74c6b1e86dabaac00c0f1f326be276. 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/USTJ22052616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78cb9a6d21db99855cc52fd5115a9a4a3e1b0f7aa284757ead3907c76c9a61c2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USTJ22052603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb219b3fb54351c666d0b27524e725116a004c2279e06552450d2b7e647f01ec. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USTJ22052617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c9df650f25ab066f173f1ca898262aa9c2178107365b77782161d63128e1b76. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USTJ22052605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1baafecae10e0c364e3553ab761b19148a75a58bfb3a824f01c5b69ca79df98. 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/USTJ22052607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d66091668079a7b4ea6790aab2f6763268a72cd09d32470eac262ef2475c65. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USTJ22052622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1dd257808004df3c526c9bbf484be490ab3ee3d845ea74993bab4c3fb89fe5d. 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/USTJ22052639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38abefd618cf20556d6c26b201be2d4210629103963e29f3a3dc5721db4b87b5. 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/USTJ22052608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc46b8746e99404419ff73ac1162e3ff1df3587ae2bd6bc8afc3eb2a9cd5a7a6b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USTJ22052640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a972a797da40adddb13d2f148d3583d700ee2cdb647604c6e58d89c9796e9c5. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USTJ22052609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b833871abdbdcdf9b4bc49ffc0115ea4485e85989655637a81adf2204964ddb. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USTJ22052623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfda3ac338653d873a7ad122e5ddd5199d46005ecdda22cf372c48c7223fd9990. 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/USTJ22052624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce426d40335a2c0076be352cc1d64682cee7a72178beeca290ff2f522549c256. 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/USTJ22052611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81fb5fc8e59dada81ef71dac5fc72dd3ff651d646408541a116aec643c1499e8. 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/USTJ22052625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4841dd8c026af3eba486c3f7df622ac8ae6170394ab3d823f38ef8aeeb50db40. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USTJ22052642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87a1e97ffd1afa988b67e94633955c061fbc6ce01f990870a1cb55db51514bae. 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/USTJ22052626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4737ce0224df97083b53704f354b856dd1e90acb8a539e81c192908bc2986070. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USTJ22052643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d8ef73d270f9dbe9e2f5a0558923fc5fb3fe5786201913788d7643642ef58ff. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USTJ22052627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f11695f89dace56acebeeea00b278cf48d84073338093307c88da54d79c256. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USTJ22052614.
Cobra Wages Shuffle / Off! Schable w gurę!
Flashcube Fog Wares / Głucha Affera Słów
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bdd70364c91414fdde3709a38a688d2154420cce91aa51b916a6c77c58b8d40. 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/USSF12326105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0296e533ba89ad8aa57babd0cc6e7cb2cfc3ea649daba6a960f5054191007ca2. 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/USSF12326102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bdd70364c91414fdde3709a38a688d2154420cce91aa51b916a6c77c58b8d40. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USSF12326105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28830df48308daa346862326c3fc9922bf04699450b86133e36e1ded7863cf3e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USSF12326106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53bbbec450b56331596f70b556c5b255f1fd74e1783c32f4a569d2aa980c6bfb. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USSF12326107.
The Way Japanese Beetles Sound to a Rose
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c580cee5dfba994b9a61262eed1fecea2fe343f3de9d1cbb5ed6addaaec19cd. 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/USSF12326108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfac9cd4c21ed4ba80cb3ceab6001fb4580f8cb0905bae92a21fa735adbba629. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USSF12326109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c2c19c88f864aa1cdd8dccc6d315bc971fdcee369a1d098f66f7d3a02d33097. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/USSF12326101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ae7507558f9a91b4def291deb086185d61bd93ef7fe5e9e51c3ea834a7ff89b. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/USSF12326103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x249c6235644beb316bfc21fb0f825e4038ada10565d79801fedf7639c0df1579. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/USSF12326104.