Sinsaenum is a multinational blackened death metal supergroup, formed in 2016. The band features French guitarists Frédéric Leclercq and Stéphane Buriez, American vocalist Sean Zatorsky in a co-lead r
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 0x41a6674994c2635e9294ae8744995d90b63f5666fbd4371123f1b4c78ac494a6. 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/6ba81c7d-ced5-493b-b5f5-b448406616bb.json and https://artists.proofprofile.net/proofs/artist/6ba81c7d-ced5-493b-b5f5-b448406616bb.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 0x3149d174b4e5487156c2918e5d91fd75e57eeb1bdd41593faf8f52ee470cfb50. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/DEH841501008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33c8c71d8992c427ef44f836705cc36e3a38697996d5cc696545fc58db1e4dc4. 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/DEH841501004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96cecbd293b36b0d41da4ad222afaaa4a1d3e46cfcadc40556be113ec0b24a3. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/DEH841501010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03984a7e1f52a833e387066ac91b5517ac1f750452302aa339ce4f785df6df3e. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/DEH841800362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0420fd5c402b4ec339d9e7207809fed0cb73d8c9deb46f4f8e9af44a01669bcd. 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/DEH841800364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b44b50584d40ade6defb63c30e5cab19f6268d3158a1fef7a8695c40b75a902. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/DEH841800365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03984a7e1f52a833e387066ac91b5517ac1f750452302aa339ce4f785df6df3e. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/DEH841800362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b44b50584d40ade6defb63c30e5cab19f6268d3158a1fef7a8695c40b75a902. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/DEH841800365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa80bad8450231598be4baadedc38447587be668245d60c7eb476ca126993e47f. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/DEH841800370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x899c849b90b5ba4e36916287f754004bbc8b4802e1b1d0a6ed947b8fc4f15c77. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/DEH842501392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x899c849b90b5ba4e36916287f754004bbc8b4802e1b1d0a6ed947b8fc4f15c77. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/DEH842501392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb0663cdb60a95fb628e3fe9de5d37244376ae4437c9fc9851306ce0c5a94960. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/DEH842501391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x112a02c1003e0efb96d62b31f9c3c4561d9e4f1ee5d0570532c660ab7ec8f184. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/DEH842501389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb0663cdb60a95fb628e3fe9de5d37244376ae4437c9fc9851306ce0c5a94960. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/DEH842501391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x899c849b90b5ba4e36916287f754004bbc8b4802e1b1d0a6ed947b8fc4f15c77. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/DEH842501392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05b61743f98ac8302c36be8d0ecc5742dc52a8a9328746aa2388d7f3d112b702. 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/DEH842501393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee2d3b299a76665f76c3951ce05ffd5371a59548fbca148a6c0957e4353e4e3. 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/DEH842501394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x169066ecb0d38638f101b5c0096c64ac7f53f57340394b7c327df589e0168265. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/DEH842501395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50d9f1baf9dfbe012eb03a3176af23e26d6c3ac2909c961ed7d0ab6e0655e940. 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/DEH842501396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288cb5737d51bc2f42e820fa28792f04391ce03e926989d1cde2fb06db31cac7. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/DEH842501397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd04703921cc23948b4c205bc6e30fad9a19ebb0577a94e27e7557391475590d5. 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/DEH842501388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x112a02c1003e0efb96d62b31f9c3c4561d9e4f1ee5d0570532c660ab7ec8f184. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/DEH842501389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed0a4483c5f30f20f19f3a751bc0c82ef14cffa5961e19b07242405463b42de2. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/DEH842501390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb0663cdb60a95fb628e3fe9de5d37244376ae4437c9fc9851306ce0c5a94960. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/DEH842501391.