Exhorder is an American heavy metal band from New Orleans, Louisiana. Considered progenitors of the groove-oriented thrash sound later made famous by bands such as Pantera and Machine Head, their mu
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 0xda0f3bda6de48e6fd3b4004dda545376e3d5e2af7271b8cf7a9e3889f14b8b3d. 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/ef0653f4-17ec-4fee-a5e6-53d81c736c10.json and https://artists.proofprofile.net/proofs/artist/ef0653f4-17ec-4fee-a5e6-53d81c736c10.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 0x6cfd275bfdd9ae9a1d02cf6eedaabe62a2b6c7bf7c60b4653228d5b2cfac31d3. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/NLA320320441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x381de1c0189df842823c4100fdc2ca4c2b335c8ce058440005851b454dfb1ba0. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-02T22:12:38Z), 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/NLA320320445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f55124410843b0b27234a1ce96104965a302f0da2c436963508f3c9b62e23ea. 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/NLA320320446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3973311d2b9bd124ace55c21e39b2f5ba487b550fa8cd02f9f569fd069c7c49. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/NLA320320450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd7131cc4f9454c68e7b1dce294f26c88ad6c539cd7fd47733170cd2a6f16349. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/NLA320320453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf83062819920e759322542896b0e7d343deed027cab28abf9c55d2f49b575de3. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/DED831900536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe13ce500736d7b5fbce8b02387af01ca7e994a571a4a136c2e00a64cb29486e. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/DED831900538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5763780202addfbb52311575951fc76e69f166da601d6f88f7763129bfe38e77. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/DED831900539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44af093c8280ec59d27d33cef2ccce6ec387b32f074a6d9fe1b5abb51125a6a3. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DED831900541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a75167dccc804089bb2f5e4d01405f79d5544d2d9f5928692a0ee44b7e111b3. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/DED832300468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ab2ca20372519c4eb1f49cdba46b35f8484760f09c6b079e28a245178c3847. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DED832300470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa04f5e136a699f7126ca8d4f988cab5287ca2a0511a4a76f2eee5ed19429d883. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/DED832300471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5ab723af427ee2da4e633192f287d05fd51bb2b924d780422cd23156e6dc45a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DED832300473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf8bd40ae1613c8ee168fd3eb67cc67da4023acf554578ab65fd75033123272a. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/DED832300474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd95275e295f2907f96c7ceacebe0ff5bdef4887e5b2e6b8d35b1f2c9f75d843. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DED832300475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e5ec73b78173c4976d8191fbf03a94d90e4bd3c7d11379361cd3d3e32ec73b4. 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/DED832300543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc29f214b7083489f9ca001e64443f2a1e4fa07a05c6adc738b3a47105dadac35. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DED832300476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4a99e9ee074074e8b64650f545122eb2afd4bd27868d8dec3ea756043c51d1b. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/DED832300477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb991ee0399366476a7cbe8e76d5f7c751cf8cfe2a97e57ae4b554d3c84ebb8cf. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/USASN2210071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e02ddd9501987c9c5caf3e5ccf7914a1c97a6fde5eda7539d456a662a585a3a. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/NLA320320449.