Antestor () is a Norwegian Christian extreme metal band formed in 1990 in Jessheim. Credited for starting the northern European Christian black metal scene,Bryzak, Michael. Liner notes of The Defeat o
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 0x2a2135cef077f47ee3bc77fa92ec80ababcd2bf77de571e0d28527d75c2b821e. Chain 2 (Bitcoin): anchored in block 953687 (2026-06-14T20:19:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/699e14ac-0b13-4c3f-8ed5-00174fe1c5c9.json and https://artists.proofprofile.net/proofs/artist/699e14ac-0b13-4c3f-8ed5-00174fe1c5c9.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 0x41ad2d25282f0c475dcac18ec517fd47bcdcc565bdfd840ef8bf8a43f8a64ba9. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBMJG1702709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb23ac8c5dc8828fb1783c725aa6959f14e2b977c926f8e856e71474f8b68dc41. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBMJG1702711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce6ae5ed1f1749311d6f1ab2a0600f137ec9ee9f62eb8063b2a42957e93d251b. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/GBMJG1702717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ef7f419507ddad32cdc2de3b5aba1e0a4f78333766fe4473d7710aaaae5c78f. 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/GBEGS0800347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4366fa0d69de02ac326cdd9b40a6fd8d3dad605b231b7d741adfd5a61a698f7. Chain 2 (Bitcoin): anchored in block 957620 (2026-07-11T22:32:56Z), 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/USHM81257435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19349fa9f1f4f767f24a7915ac06b554d2b71a97e060e2d7a089ef7e0d80dac1. Chain 2 (Bitcoin): anchored in block 957796 (2026-07-13T03:24:42Z), 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/USHM81257436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2270b7edb377abd7936c50c49c69c57ee7e4319fc67ef7f4ce23f59e8e4fccc. 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/USHM81257437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32cd929dc03d216e20ee7a1e3c797d3e366b42d77d9e9775d32f6c9117345f54. 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/USHM81257438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x188ef368484fe012ec280d0ba6b8fc2202aad0c9272c64fc6e925a11aa68d281. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:38:24Z), 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/USHM81257439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41bf27fd31bee9afae208c3dbd2a5f3ee56c9d34e3ec9cbcaf16c1488573dccd. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/USHM81257440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2910f30b2dca8d8121f49efce3424ef4ebdf5a9cd61a626377c613945f155250. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USHM81257441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdfa1666931733b36a7b98cb9783964077351e9981de3c922e1262ee92933688. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/USHM81257442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd04862b1e439328d45c2ca9b7298d9a6ae807d5978466fca44757b8bb3d669d3. 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/USX9P1265079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb78ca0a0bbc2320d63f1a50bbcf26827a9b4bb7f8cd4ae57ea0b1073b013b586. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/USX9P1265080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cfda06990be39a552b8383c79fba16f4deab6ef0e53f15b3058d17e0d190dff. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T09:10:53Z), 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/USX9P1265086.