Martin Dupont is a French electro, new wave and cold wave band formed in Marseille in 1980. Best known for their synth-pop melodies,Minsoo Kim, Joshua. "French coldwave legends Martin Dupont embark on
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9636cd645d31d354fb705a501979e81e8f075c33531bf443831568d789d41199. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/be392e51-f754-4389-aee9-d0970e55ca11.json and https://artists.proofprofile.net/proofs/artist/be392e51-f754-4389-aee9-d0970e55ca11.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x202398c49f4c5b7954ee72a239b089f10878c14f812f3b8693036f74122158cf. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:05:58Z), 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/QM4TW1993953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb877c3f1d0d0450adf4430ff784e2c6bb7012a0bbb213ad2865abd922bc7509c. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QM4TW1993954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd2bd3902cd547e7a1819839fcc94bbcf40ac5faf8127440a8f251a0c2076d8. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QM4TW1993955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f5055ac5d2a62b581739457cf604f4ed43d123f75f06c6f7b9283ba880451e. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/QM4TW1993956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf309f145c37b59658b868415b74d3a603522f23bd4bffcf776d90938a2b272e3. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:03:41Z), 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/QM4TW1994039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8335c309ca3291087fdc4de3d6a80188f5fb357b22d93ef97a53e9f3bbdc51b7. 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/QM4TW1994040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697d88d65a0d034f3861c284c8fe5579256ecb319a140e089e9bcf7f2ee6c429. 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/QM4TW1994046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a4ba44d82190f2bc00be7ba949f8c56409eca77ec22749f62a80b66a0f405c0. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QM4TW1994048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326b18f1d79209e8651405faf6c595293393b643cfd89c1f66256f37b091fe20. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:55:23Z), 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/QM4TW1994049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5901ce146f80220d86155b7101f1e93fccc4bf9a10ffddeae2df1a1f492902a. 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/QM4TW1994116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf45ce95b1eff53d1044bc2f1892a03496ae531582408d7bd4246ee2c7cdb7348. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QM4TW1994117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8caf2418465e15e39605c2d9bc81bc579d97044189b0ec5cd065daa4cb3145b. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/QM4TW1994118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa675a9b2f79b2c94ead7c3124432d59bcafb7e5baf5a7041773b622591acc16. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:00:26Z), 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/QM4TW1994121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4571bc6a144abe6954748fe9b63d3d3d24bf878253dfab19a9939f803ab5389f. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/QM4TW1994122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x678ab95b03eadeb64437e094d3cf355b29599d15e3603ba6ebf9bbea7f952b9c. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QM4TW1994123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad1fd3a9f9da7476e3420650f2e177b295f89fc8b89d5cc0d19c652066025527. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/US8YW0900059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6f835ec88e16e02422c6ad3a56fb12dd912caa87259aac662f5188e410b7e37. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:27:52Z), 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/US8YW0900068.