Metal Allegiance is an American thrash metal supergroup formed on Long Island, New York, in 2014 by bassist and songwriter Mark Menghi. Shortly after, he recruited bassist David Ellefson (formerly of
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 0xbd8e1995f31a9212658acf16fab4221655257523e11e7365328634edb5b2c9ff. 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/65b44508-11ad-47eb-8688-caff3ee148e8.json and https://artists.proofprofile.net/proofs/artist/65b44508-11ad-47eb-8688-caff3ee148e8.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 0x82bff2e9bed5cf643eb53741294a9dfc4d9f6b6412e0c201b78fbd014e8f3d3a. 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/DED831500630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a067e1085c54f9e4ebb2a79384127bf24e62106e1db07639a271a3d25c9cb3. 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/DED831500631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b4b38a158dba7c3c64c611d1ad265bf9c0deb8a14c03e8dfc034d6cbb6e1d80. 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/DED831500632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddac09e252efeea3acbad44c009f76d2e28a3f0fb62dde7bb35e624a99d513e2. 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/DED831500633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6fca011a33df02648a78c5cc8dbf08388d72f4f0290d3d7809cc7e17cd35922. 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/DED831500634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1bc9f331f07165c21758c054edce7dd68866c29c6bd2f21bc09388ed287f55d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DED831500635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x840baa4f5ef7291f97c096985364dd4cf21158b94f42deb4f370c50823303305. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DED831500636.
Triangulum (I. Creation II. Evolution III. Destruction)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21dad2537333ee818ab0683afd62ab0acb1edd0a6154ba8e2ee544063ed0932e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DED831500637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77b072f57c6864ff9df106f66d00c80297d131138476b7ff468f91fd6647845a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DED831500656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad155779ebc543b491d32d4e16bafcaecc2c9a14c1fa237707524a72a58a181e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DED831500639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecdf1814099bbae489202e2fc765bf4288a22e97ce5fe5ac2c8751ac1f3cbbb6. 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/DED831600649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec079491cb492dad525891023eeb35cd568e15102f8881c7dfd1bbb7a2e5fb55. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/DED831600651.
Voodoo of the Godsend (feat. Max Cavalera)
ヴードゥー・オブ・ザ・ゴッドセンド
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a86addef0b8b07ebbc81fcf0d538fcc5a3cb84f3be07d4fde2fb46c6e833e1. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/DED831800707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d612c67ee0286f386f2968f59ebd026660d1ee5bb6ac2f692ea3ff7f4e08df8. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/DED831800709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa293d2cbe6a1830cc04975c1d1f8a849508e03f2c7dfa62371efb0366549dd0f. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/DED831800710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc255027d4be05959dd14c1ea23875d2712e18238b4d58c4f416335900d25d7e7. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/DED831800712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb85996917e01e8477046aff0081bc483315cf9db0d3cb35f805b87772f2eb46. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DED831800714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c97d6d3ac0f72f18b81e8e652d31396eddb55260f641349300682a819ddbcb. 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/DED831800715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b9318dd34bbe98f66dc09f71f6eae18c1831747ad1d7e8207bf05d719b61565. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:26:50Z), 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/DED831800716.