Undead Corporation is a Japanese extreme metal and doujin band formed in Tokyo in 2010. They combine different styles and elements of extreme metal. History The group was formed in 2010 by the musi
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 0x16a35b3a030553c12e0cc03d4b04a2c0bc3f16f1da3bd08f527e0ef66d57004b. 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/629b2e85-c1e9-47eb-93ad-56b85aa5fdc2.json and https://artists.proofprofile.net/proofs/artist/629b2e85-c1e9-47eb-93ad-56b85aa5fdc2.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 0x5b7bee328d614ce2a0e15843a649f6bbf0cd1e219ba3a97693bccd07831ad188. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/USCHR1330085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1493e8a5bb69337ddf042969743426e2e48e846163cfddfd727f3819edeb2703. 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/USCHR1330088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bb85e8a707f1a73b22deada38f25eec2452da033940d29e77eb8fa8cd37b11f. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/USCHR1330089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1d249a776fcb1a66424bb34ddd5d01b8495d552725271d8f9c7c36e56c4c227. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/USCHR1330090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x831e2f765a9c02082a2aaeac2d35f516ea43134b3ddc6869863eca6ad0b4b60b. 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/USCHR1330091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeba658fc9f8bf3ed1ceafbd9570c9ad29de362b09f4afb47e64f6af3d21c6936. 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/TCJPF1733504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7069a37a8946558991d00a14fa1afb37a36d4f2229579214c06b92d14fe1dd09. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCJPF1733506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc9c2bce30d61b85a28657ba6d2e85392d6ae1715a505781f42db5edf30dbce. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/TCJPF1733507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5af1271583b177d2b8cdaf73cda832c68bd4bcd1cc089556bb2462d6260c2639. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCJPF1733503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfa2dc6ea8660dc02bc7b1cf9fb8e18ac8393748f1bfe9efb75ec54112a8c265. 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/TCJPF1733509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b970134b4f42e2b91aba0296460ff8bd7f892e7ceb8380deafc0a8c1539299. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/TCJPF1733510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa374b7a26fffa02df005fe4ef714821939dce7d69ff49f69b5cfbda3298f6694. 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/TCJPF1733511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2570da6a4073028a4c5ac0bedffa0a3c1280026ec91ac393e9ab6ee789f81159. 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/TCJPG1711886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e62a518f0e53b2d35b2a812bdc35724e8b19ce43d03aa5acd21b6e9e2507a8. 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/TCJPG1711892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc068d4ae84f2b95818c875215a9dcc41dcb5ebb5c61c4724db6f0c84be9cdf74. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/TCJPG1711893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x907a0a1b9f1cb5817d4b413f7f7aab86984de83569c186c9246a9434569ffac9. 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/TCJPG1711895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27449054c9c86cb6beee6f41d794574904d70da23a0a50973eefd3553202996d. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/TCJPG1711897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30ee7251f846cc85d31f12b0a924b9329ebc4e342ac22cd1dc461f078367515c. Chain 2 (Bitcoin): anchored in block 959063 (2026-07-21T21:45:32Z), 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/TCJPG1711898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20fa4463cb04435ee1801b6095a89233122298b5647657f4a18904121d528f3c. 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/TCJPG1711899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x826ad2d8f33553387198069966180639d9afe8bd987ffbdcd90d5af4ce715877. 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/JPW562100775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a4fb87e0b448561723e4bcb5b8282e2fd1338190455f0b01ba41bf0fb0a0ab. 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/QZES52181172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf353e677d4839f731eee27ce4b857781eeefda960a67545eeeabae4a678cffe. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCJPR2283342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f8d40327d7a466833de2e610743690ea366a4afc2ff71efc22868a8ee8b427. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/TCJPR2283344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9083dd5a405ea1cda3ff190e441f5f0125961e640ae62719c83bf0dc49ffbf23. Chain 2 (Bitcoin): anchored in block 957624 (2026-07-11T23:13:54Z), 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/TCJPR2283346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d1216d7f079be6f5d3637cda4d7db4732973922809a5c2f70c6ee1640e0e097. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/TCJPR2283348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x536a3d6f64182e0234f23a6a4d6dfa7f0b2372f29fedd674d936795d206fb1c1. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCJPR2283353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x662df06fc0684d7837cb7194970b171583f92f62c29d0ed5b762f3ac093d85c8. 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/TCJPR2283356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91fc253c05d12a43e1175590e991aafa62e2e92380084821672e7e65b711f0be. 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/QZES72348268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be476637bb2461bec7bb11f621644550452d498646d3d6d238b095c0ebc0213. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/TCJPW2374107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be476637bb2461bec7bb11f621644550452d498646d3d6d238b095c0ebc0213. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/TCJPW2374107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be476637bb2461bec7bb11f621644550452d498646d3d6d238b095c0ebc0213. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/TCJPW2374107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x485b2acc11dcda9b16499b638bbed781e04bbabe875ceeea6fff1725c40e63ae. 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/JPPC01902421.