Cobra Spell was a Dutch heavy metal band formed in Tilburg in 2019 by Sonia Anubis. Cobra Spell began with both male and female members in their ranks, then evolved into an all-female band, until in 2
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 0x25720937e912033022b7972130724b005a541624afdc63e4817c700bff3c92b7. 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/83f8316d-59ba-49da-acda-54b3a71a92a4.json and https://artists.proofprofile.net/proofs/artist/83f8316d-59ba-49da-acda-54b3a71a92a4.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 0x82355cb4a1f20317df0c87f31060ffa17a81b82ccbddb9a3419adf296ad5d032. 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/NL1VU2003047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07350446bdd333b89f08b6a1795af5c4e29bf81dccef440585465f577206ecd3. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/NL1VU2003048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82355cb4a1f20317df0c87f31060ffa17a81b82ccbddb9a3419adf296ad5d032. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/NL1VU2003047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4644663cd7a81af2d9b34a75407339fe25bf142e2d5130d37c093c5df9031717. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/NL1VU2003049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80bf0c284f69879f1ee6d620b60cd29afb1f6875f1fb4734700352e432eb9e82. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/NL6VT2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66a0201aeb08acbce2c3f9d95cbd1d324424039df76e7e7e65b1b279feb06d0. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/NL6VT2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3010270a3e2b888aa376e63eb617f20e838f290cb552f37e5ca44369b9ab527d. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/NL6VT2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc09553f117f0bed54b3ff469a29cc174eb750d04b2894e7c73af420d867f54d4. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/NL6VT2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a8aad8c42f2dda9bcf54ea257f45559c84e4f0694381ac7691f92279f455c1. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/NL6VT2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f272df5d55ff3e8d9e45eaeec17288eb6fb3e8cbb32a7bc99cb974eb8dcdfc. 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/ATN262323706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcce662eebceae8036d4052c91fdeb292a4e4de567e8fb6aecced600c99a26243. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/ATN262323701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc0f34165dd15833e13be0d75ae56a349f9128601427f8aef869e277ff31b3b1. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/ATN262323704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb106f6e338eb5a14a1e63a5d9ef85dc490c336feb39e6aed6feb4f7fa5ff7c. 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/ATN262323707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c2e38848877c6b2aa017a46222d360eac796815e42a773ae3ed541e5d0d2d4. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/ATN262323708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe24eb8384a15c6b6b4f507c98297dc660ad5cd3d44cac0302aff23471aa10ddd. 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/ATN262323711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500bd83178e730dfc239a679c9d10135bb16e1db0197b141e1f8f4bab9ea877e. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/ATN262323712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193f63706e9e3301e8cd7dddba488b98ef229ecc3a9196e7b8684db3de7353ab. 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/NL6VT2500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd8e5a61ab104539904f26644ea85e0c4a18696f8bea0f8d812e60fac87d550a. 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/NL6VT2500004.
Moeru Kokoro - 燃える心 - Flaming Heart - Japanese version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07fc0ca5ae7e7669f62aacced28e51304583f4d38d9a305d911aaf60832a8315. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/NL6VT2500005.