Poisonblack was a Finnish gothic metal band led by singer and guitarist Ville Laihiala. They released six studio albums. History In 2003, the band's first album, Escapexstacy, was on the Finnish na
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 0x3aa834e8684b570435620ddf48903dac30ad925278e6d46b1823c5cf54591f3c. 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/a0f9ccb3-1c33-4a15-81d6-5252f9295dde.json and https://artists.proofprofile.net/proofs/artist/a0f9ccb3-1c33-4a15-81d6-5252f9295dde.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 0x6635bac59807bced91c62161c1b5c716ac76c663eba4c7562c24e57e89c3f363. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US4E40967001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae91d4167893b155b45d3f196589a01e080d6602a1f15dbf5a03373f48bfb3cb. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/US4E40967002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aabe36602bf99bcc413a21b046f47bf5d3bc81d76d1afaddd016e378b9475df. 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/US4E40967003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c52dcf7129e248d83cadc48ab2eb66495553b5551488a8acdd0d93f58e357f9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US4E40967004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0f5af3aa5326cf9fa92bff8dd5295bb6a423b0e2e52b77d56f2698bacce5f2d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US4E40967005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c387abdc07aa87f2223504b56786afe3cfb3b4762a761bf119165b4b88ef4b8. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-17T00:20:05Z), 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/US4E40967008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55512eec01bca19fa321440fe9a0d79532ca91b7aab69aa447513fff59ce8c1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US4E40844002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bcf5097a1bd04f94b0b6968633312b9198238407ab51495f5692bf3951c758a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US4E40844005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ce32e458af628535197c13c83ddafc592303deb82e98efca0843891db6e2c8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US4E40844006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4ec71ad36f0de8c0bb109519f3b1f2306eb2bfe88975017b83f46019d11679. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US4E40844007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3df217a8238b333a6fc7bceaa36eaa4ed6aa198dcaf0379849cddb24f006d67. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/US4E40844008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd12ed1bf930e3d18d5fba46f3ee43d811df813fa7d32944e94b83c5a827357a2. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/US4E40844009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb754eb0ebf374cdeed163265c26ba4f10b6a4a2fe23d658e7ccc008afbecad16. 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/US4E40844010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe93b392a5711453803cd9fc8a7d524c87d31748496bf47917aa3e9dcd2fa1cae. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/US4E40844011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c8d8478455fe1b35387a6e9ee55237268376229bb46da668a05e75502c48d6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US4E40844012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb3c63ebff64d3d87978085f8553b661c2009eb30e13e3a6c0cf40298ae7a07. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US4E40621301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e0132490d961432094f2edf9d549668659bfc1ac3ac7db55f093f92e301b104. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US4E40621302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc48e37b454b9f68bd968cf3a3455c2e6013d84dcbdbc309e86df4dddecaef0. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US4E40621303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a56d057ef5cb39aadc653e9fd383b97de528e3c2e9e8497c7edcf2188d5eb3. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/US4E40621304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294b435af913ba3f1e6dbb82cc34def9b1a9fccc007d6beb99354542f559634d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US4E40621305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a11c816cdf2bcde7e26188f79357054d1d9134be507771d98b53c55c12d0431. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US4E40621306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27dbf004b6586c5d33c8bcbf9696e42d4331031955c5c69542d95052bfc4c679. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US4E40621307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x459d36b7547c1eaa7209ed77fa03a115e0c3d01330d9e917fc3bb70ed1cd4d8c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US4E40621308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec4a1f75e1ff39a0b7c93fb374a87c74aa2cb30a08081c6f35322100217914d3. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US4E40621309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09138a649fae1e4f4b9b94e3aef64afd6a70569dc0600fe85367261bf71dd3ae. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US4E40621310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96a508384f560377fbb183e30d50953e5920050238e72974bde28f03829c2dc0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US4E40621311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x287fd1ee23656fcd2deba6a08c58d4d8f4ca09b8160385604a695ca8844a045a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US4E40408601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ee996f9f6d7272097fbd12fb6a04b6f471de2bb7ae2b3a4ab3ad6b40988934. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/US4E40408602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340da3bdee443e9e02589184cab8766a7a68769d1de26b9eb8440a81c8e9b280. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US4E40408603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0944f7b4c1324b18a8bd56ba4d9bd25ed9fba33240fc017d52e97e83451f72c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US4E40408604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b79fd5ce05f5fd2e14d373c58b3b0365697a63628870861f5cb7e4df12cc62. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US4E40408605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aeb88a4a50e5e8082b8bc31861fef5d6879c81ce08b2ece3d1e68f02a99c266. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US4E40408606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc7fa48cab663d879e0c4a83720414cf2797a748ed038eb0fe23a115deae59f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US4E40408607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc883a0cb19c0c39aa0c7e56fdad54730b61c2eba76828315c438afe669190b9. 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/US4E40408608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa29352fa231af63bd0f13300c87ced7bfc76dbe7a4a32978f78807596d29563. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US4E40408609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9aa101be1605adb9f6ad067f193d20e4dc06da1b5a6bf1d389936aaa1d87628. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US4E40408610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ad12312ea24f404504c1ea88b1270ba82f34dbc17fe0289678f28515e27e61b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FIWMA1300389.