Medz is a compilation album by the American rock band the Used, released through Big Noise on June 21, 2024. The album contains B-sides from the recording sessions for their previous studio album, Tox
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 0x85514e95d3158e110b14d8b615d2f078f6775879507acc945ffbe3d91a3b2ec4. 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/bfb68179-4065-486d-af11-31fdcccf9594.json and https://artists.proofprofile.net/proofs/artist/bfb68179-4065-486d-af11-31fdcccf9594.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 0xc8dfad341f91618406b599a86c3307a7ee516a40e01f7666f6013c4981ba6590. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBEWA2103480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc8b0fbe3fb62d87fc06aef37038a430d0071c120d3467b3bc1e99f7044f07e. 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/CAR072322085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7863dafa0f9c372a8869f176a50c7f792347efe01fd3f2bf307c77107544de6c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CAR072322086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d7d52bc53aa80e930cce7df21b57ce315b13536e62bcbbbf4fbafc4cc74f503. 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/CAR072322087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccabf8c47b0e2f0c6109775499fe486fa28d969899383ed86812b807eb0a9584. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/CAR072322088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccabf8c47b0e2f0c6109775499fe486fa28d969899383ed86812b807eb0a9584. 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/CAR072322088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc8b0fbe3fb62d87fc06aef37038a430d0071c120d3467b3bc1e99f7044f07e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CAR072322085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d7d52bc53aa80e930cce7df21b57ce315b13536e62bcbbbf4fbafc4cc74f503. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CAR072322087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7863dafa0f9c372a8869f176a50c7f792347efe01fd3f2bf307c77107544de6c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CAR072322086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc588ebc35ec95333ac33d7aae0fe80e1c42332386b20ad44e607666cbd6d30. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM24S2300178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728af72e55fe1f61fed7565fe290e6afde10f5a79ca8286eb6243f03cf340b8d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBEWA2204664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57527e8c69d2476a2e03ba72e5f43f54236160cd4a37e411d28e47ef715ef158. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USA2P2229046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd315abf20979c9288ac7a5230e54329892b30bc86a3abf283144fb14786b2d95. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USA2P2205791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x331ce2e588b13354cfc900a9d0e9e141c0cd87905b4c818f042278c756da02f0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USA2P2159064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da2894b6d0a2239751be99038351d56721c766973fbcc4f7ab65b76a18d9522. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GB2LD2110212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eafc16a44d72a6d355f4dc70b6c2e862972d1fd6897582877a6934f95e790a7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NL2VN2100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x767994beb2919889c69e7acb57f4a0ca159e2bafbd3121fc5980bf3c80586539. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USA2P2102378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32832b5efd6d7f4b79c4ef1ee9647434480f962301aaadfb164fc308814620d4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GB2LD2010222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd311708711b16a9740f04fb9dbb3789a1752f2b9c02374c0362d73bb2ff0309f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBSMU7421116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3347821957ff2914f502a08c5ec98d4bd7f89777dd0541d5b37fe1da7088ec39. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBKQU2346497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf24fab4ad3129aac57f1fcafb52e8f97b0f69522173b9a635ffa6ed5f96d4599. 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/GB2LD2110025.