The Marked Men is an American punk rock band from Denton, Texas, United States, composed of guitarists/vocalists Mark Ryan and Jeff Burke, bassist Joe Ayoub, and drummer Mike Throneberry. They have re
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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x411315647001615317185d04402219ac44d1d210ebf0d4b591e512f7b971eddc. 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/f36a1971-a477-4bb0-bd4c-90fd2e9f3e46.json and https://artists.proofprofile.net/proofs/artist/f36a1971-a477-4bb0-bd4c-90fd2e9f3e46.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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x827b49e2a5a7dba8bd873e2b658adc2412cfa8521e61360335a57751411677bd. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T21:02:03Z), 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/USQZB0404602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeee5fd7d2c9487f7cd0b29a9f22e97b29627f91b90388f9e210646a4ab3f0d6. 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/USQZB0404603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15eb875cee6f0a07eb647cabf4250624fa53994a2214b8947c4c82d839cf53e4. 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/USQZB0404607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdacfdb6e5a297e01905348bbe5a6bcf5a34cba6f15e0c79890113ec5cf7b9a6a. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/US2820613102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92764592fb2b1c6f3d65e27c8af3599524e3eb8698896d9bad1efa01b380a339. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/US2820613103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x614c4bd4d24bcdb211dec756f94ac4bbb3a15afad38d0e6cb71f2a59338b112d. 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/US2820613104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f2408b99440b50676d58c0dd67d1e064baae4ac15d92d500f8dd5228a38b48c. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/US2820613106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b6b10b3b7d869621b74e50b3603f501d7f2ba90eac62bee0d66b9080afca167. 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/US2820613107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d054790e2952438915dd333387ba622b4c8e693f8c46b57de3a11b6833c8f93. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/US2820613109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb63c73e0125754edbb0a2d3abbf3ec953b4ae65765222c1d0763cb8db26fd4f. 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/USQZB1007902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0932d8ee7edb7c9c95b73e4426328a19defdf6b6a13c7425f3edf0e11a717f28. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USQZB1007903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab2c5ca465d21ce31c2711b53ea7e05d54314ad02583e3d450856aa3ee430d1a. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/USQZB1007904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6926843e1990fe42429f9233f95e0ef7720c22713de7be318fed0504d5d512e7. 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/USQZB1007910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd196088545663b19a28aae0c07277cafc8c11d321d84dc5d4fc67751fa5d99. 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/USA2Z1811695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc5dd293251439aba1e13935975f6b6e2f287be543ac4bc903ea7bf8e01d4de0. 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/USA2Z1811696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x810c7552cbae2e64e41943157027e1ce4ba7efe85adef311e6537149189b36db. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/USA2Z1811699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b564743f53c6bafef4202f89f8b97dfb5c5c4a5a075a04fc6eb4cae50229e7c. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/USA2Z1811700.