Daïtro was a French screamo band from Lyon. They formed in 2000 as a four-piece band, but following the departure of their original bass player, Gwen and Aurelien joined, and they played as a five-pie
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 0x887f0582eab10b1257858223cfe2785482aa3e37e019d11e585d47129f5613c5. 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/a7184083-481b-4635-a559-8d0f84287ed9.json and https://artists.proofprofile.net/proofs/artist/a7184083-481b-4635-a559-8d0f84287ed9.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 0x04a7f08dfd93d499eeed0b0d7a1deb69557d8fb4c14e3bbca4436d116ee42bbb. 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/QZES71992907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2be23bcf155209fe81eb585fbab95a68f44cadd41e3d4b8cf354913bc10989f1. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/QZES71992909.
Pourquoi les inconnus restent-ils inconnus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f7081d37b5405f4890caa94a3f3497dfcbe50bf5ff4d9ff15103e0ac5142f7. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZES71992910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e7e12f43846b9833dec0e29919e9b769f28be3571baf75382867d4478b24988. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/QZES71992911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9765bcbe666941f90a7b66f601103c17768848c147bed0e9404babb4eda7cc67. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/QZES71992912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eb9b4f847d4e4d7baa8d2b88710ebe5846d744553fd09a3569821df0343c04c. 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/QZES81913243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc50662dbfdded22a7c0a2a0ba9c4db38881d485c39de113879aeecc640671f89. 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/QZES81913244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x069b395d8e29285afe800a13fe1f27d8f6aaa9173b72c3137557e4566d546783. 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/QZES81913245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d6eb4a5b979ed74e4a489966fbfa7eef41c83bdf09f8d2e80fec6a8d925dd3. 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/QZES81902323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd8bef599b6eb74a357f2b7bb34cc33a40325bfd2f68e44ac955c0c3c92b5c19. 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/QZES81902324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd31cdbdf54956611dfdb9042c7f2388f5efb2de03ac606fcfde169cf5042831a. 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/QZES71984752.