Alcest () is a French post-black metal band from Bagnols-sur-Cèze, founded and led by Neige (Stéphane Paut). It began in 2000 as a black metal solo project by Neige, then became a trio, but members Ae
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 0x2cc1798bf1906d755340a21ef723b8ce123ee893e40c6e4315977cc1face2fa1. 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/e6479efa-e4a0-46b2-ba84-ef2bf7dba737.json and https://artists.proofprofile.net/proofs/artist/e6479efa-e4a0-46b2-ba84-ef2bf7dba737.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 0x5b510ed38ec3ac36766d1cf53e5b3502e28ae6061a4a5100db2d6b7ae92ee971. 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/DES561111401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd882250aa48c2254535f1ec9bebe16b285ba1b498eb4f347e81fbab6c26dc58f. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/DES561111402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cdfcffb0ada418693c8129a33c8d8a2afff4440693ddd2a2ecc6c0d142ba913. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/DES561111403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8153d65ecdf07eb8fbb008bee417ddf0ad3c2390e76e017ba5228d5185eb4f28. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/DES561111404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8eba751ce0bf94a1487a6890d99ae8cbc843c963ba95595e609d9f9f86184c6. 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/DES561112101.
Souvenirs d'un autre monde - BBC Live Session
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d18f55b52a50c4209c2785ec79d6aa5159db4c5ef0d0ef8f6c20bd584d9713a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DES561212601.
Écailles de lune, Pt. 1 - BBC Live Session
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7952d355a7fe385bea17c3ca146b26dfc05e906ee8191fa747053b131af61e0b. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/DES561212602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea4b92d20e95b7bab20c4416cae437b3f61ca8bfe73dba2685ac5f5259f3819f. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/DES561212603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f7367fff0b7b4272dbb8d7cff72c280251292126424f0ce8d665546b131b33. 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/DED831900757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8832fad5eaba109fa25c69b87bed2c7b3934016067d15f1f2aa116e8013973c1. 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/DED831900758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x380e9f3bf16f4813cfab83dd39d53a51bd537e09f70d644405307c1a43580435. 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/DED831900759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8b072b9a8422fd40f40bbf02cdaf9f8bb920333510d12a1a761d9041406a684. 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/DED831900761.
Protection (Acoustic Instrumental Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c1b670d109b63f2a9f785aea186e6586772433653eb41ec337d62fb697ab70f. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/DED832400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5cfdc739c06889e2c1c8de72661db9d052f778dd28c3ab67002476e6b91d475. 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/DED832400004.