Angelcorpse was a blackened death metal band formed after the demise of Pete Helmkamp's previous band, Order from Chaos. Originally from Kansas City, Missouri, they relocated to Tampa, Florida. Metal
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 0xfac71875ed3095153c5764dfbafaf354b81125de1e6a75ea1cbc21636ee6e0a9. 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/4c06994e-3ffd-4fcd-9d77-e8bf71084e41.json and https://artists.proofprofile.net/proofs/artist/4c06994e-3ffd-4fcd-9d77-e8bf71084e41.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 0x1718799633f0ba4e0d5f6a79ea1a3a19260286058eda662436ed8df09cff4b51. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FR6V89900057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d794bcc3abe26ee728a0199f369941c093dde15c987a2e8754d1415f78c060d. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/FR6V89900058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x430c37073239041cbc1d393be8ecf50104ea0f2061f0543dcc0a3bfa6ea8c332. 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/FR6V89900059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a5045f981ba0261e3fdc0caa36101aecd21e6b8867e7a71b7ecf586099c8ae. 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/FR6V89900060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd221104ad591582b47f6391ccc86264711577ad1dd0853d0416646327b1a347b. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/FR6V89900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa494799c4fc344acdee3d24d4e71a848c149b920616b36b50edcc9b54e892a6. 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/FR6V89900031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x629c993a37bf07d54e07f61d8918ab9c4f83092fee86d6a09f9fd858baf58004. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/FR6V89900032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbee5b131d0cccc9bf02354e80870a9bf234e4640298f89830dfe41af2c67f4d. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T20:19:31Z), 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/FR6V89900033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccedd74c26282ffffbab6b0e4095dcebd796585ef759f7237f31fe0d566bbb6b. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/FR6V89800085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa25f1347ac16bde66682e1446c06b356d67cc3b826d93717ca14d5165840bdff. Chain 2 (Bitcoin): anchored in block 959034 (2026-07-21T16:34:25Z), 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/FR6V89800086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cc218e38f2dc120605c287ad52a1ba9f86c0cd1aa3d78af46ac462d1aa041d2. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/FR6V89800087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d9f2fbd11560ec0b31fa2bc54ad7cc0c8c77f31c3f99500d8cd594b5c85b93e. 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/FR6V89800088.