Michel Giraud (14 July 1929 – 27 October 2011) was a French politician. He was notably Minister of Labor, deputy of Val-de-Marne, President of the Regional council of Île-de-France and president of th
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 0x71ff582bcfa74fe1810528bcd03b231c9b2b4fe5b154d858909145e02954e06c. Chain 2 (Bitcoin): anchored in block 953588 (2026-06-14T04:52:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/00ab5e26-3fbf-4675-90a7-c4c0fc7be8e0.json and https://artists.proofprofile.net/proofs/artist/00ab5e26-3fbf-4675-90a7-c4c0fc7be8e0.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 0x744180ff992743e76b6a6b243751a6330cd6cd52ebc8e016b9f6a567d4f519d1. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/NL4NL2216055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x744180ff992743e76b6a6b243751a6330cd6cd52ebc8e016b9f6a567d4f519d1. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:29:56Z), 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/NL4NL2216055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x744180ff992743e76b6a6b243751a6330cd6cd52ebc8e016b9f6a567d4f519d1. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/NL4NL2216055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58635c4e659501f247adef29cdc5523ca65a0b50663a65ba9b3943215d23c1a9. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZFZ72364399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58635c4e659501f247adef29cdc5523ca65a0b50663a65ba9b3943215d23c1a9. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZFZ72364399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc48cecfe2460116b08cc468567b7ac35e689b0a31ba7f7fa363c445ac81d4920. 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/QZK6H2429498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc48cecfe2460116b08cc468567b7ac35e689b0a31ba7f7fa363c445ac81d4920. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/QZK6H2429498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd541cddb2dcb7f229bdffba01e44bb85be4de6c94c7004242d2f29f00629ee39. 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/QZK6H2429497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc48cecfe2460116b08cc468567b7ac35e689b0a31ba7f7fa363c445ac81d4920. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:57:43Z), 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/QZK6H2429498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd541cddb2dcb7f229bdffba01e44bb85be4de6c94c7004242d2f29f00629ee39. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZK6H2429497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd541cddb2dcb7f229bdffba01e44bb85be4de6c94c7004242d2f29f00629ee39. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZK6H2429497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa09cae837b1cef97fa765274a11b14ede975748b4f8f866aec9615d4ede5f08. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZTRX2430325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa09cae837b1cef97fa765274a11b14ede975748b4f8f866aec9615d4ede5f08. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZTRX2430325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0236d9959c76b318707b39618f4f6d58925f7410020cc7059bf49854ae49689. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:44:57Z), 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/QZNWR2495993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4d2631526c9e3889062aa24aa6cf1b0030514e01dd5c345d70ad98216a7540. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZNWR2495994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4d2631526c9e3889062aa24aa6cf1b0030514e01dd5c345d70ad98216a7540. 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/QZNWR2495994.