Coste is a surname. Notable people with the surname include: Alexandre Coste (born 2003), illegitimate son of Albert II, Prince of Monaco, and Nicole Coste Anne-Lise Coste (born 1973), French paint
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 0x286837fc0633e2eb45ef3f2dded872f3e5bb5db5c6ecaf506140459a3566121d. 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/9e582d09-505c-41ec-8af5-2854ea6172b0.json and https://artists.proofprofile.net/proofs/artist/9e582d09-505c-41ec-8af5-2854ea6172b0.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 0xf3869ac0e52615881e9f92124c8829d431d6a84563ac076700a42394e2aa3f16. 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/QZK6P2021578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae66884c516c0f84a9ed5c1fcbffcaa20beff2beb3df01d2d23a47e98a2f6407. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/US3DF2008086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7198c5483018b1794b1c4e0e0f0d8092a381e30b55ea386022080c894f308c6. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:25:35Z), 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/USANG2428520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c863f595e7350426b4a22ec42e76f9ebbde5ae560819768811ca2c610682c3e. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:38:40Z), 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/QZVEM1882649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b8437458be72ceaa3f57aea9a46ada093dc31f03c5ac723ab74873f3ee11cfb. 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/QZPEW2580198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5b0330ba247ea38475253c633ca470d58c5d3049443a4ac46ff3f2b57b7ad5f. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/QZQAY2510373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea14705374c3a8b9b8230dd3570073c19abeae5bb523b95658aacd9dce8b747. 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/US3DF2532352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x774e9b3acaadc205ce8f00a1ad84e0570783d720760b5c6d7a28d5fe2042cad7. 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/US3DF2562718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9212cb9ab4c571da0eba81f553289b5eb3975f36eb85701c3b8f9aa02fa2390. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/US3DF2564495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2340d3f7ae475375b2fa0a1df3d7241ae725bfe99743143ea10b2dd5d61b951a. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/USANG2532424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x225b67a742e491fde043c7c13b84cb867ecc142de6874902bb315b5a2bee6d74. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM24S1919575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1acd4eaabbd8938e129a299b1d65ce737ba754dbcfd0336f039cf83ba0a28da0. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QM42K2173021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2817fef40f21c70cc939a9ca44cd930bfa9df4b128f78fe868dcd287d789f134. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM42K2017236.