Chic (; ), meaning "stylish" or "smart", is an element of fashion. It was originally a French word. Etymology Chic is a French word, established in English since at least the 1870s. Early references
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 0x9c511efa579363028602fa17db10965b7c10a6ee1afd31390b9541272d3b7a6b. 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/1a5fe975-f20f-4a90-ba4e-eec846aa95c4.json and https://artists.proofprofile.net/proofs/artist/1a5fe975-f20f-4a90-ba4e-eec846aa95c4.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 0x78f7780e80745519f579f6285d2616bbdf8df3f4aa3d10ad71b31865c9b61fa8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USRH11803129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c828f1442bb9943a18c75d3b623a4804da98090d4c971048c4d4ca0ddbe6ab. 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/USRH11803133.
Dance, Dance, Dance (Yowsah, Yowsah, Yowsah) - 2018 Remaster
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2de814411131d48c40e4ef65fd4f05beb2187e397ca587f7160dd25205b1c35. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USRH11803121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f5d46946db894c40792a7dac0392ec7c2e50b14cc3ca28ae35f612113920919. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USRH11803124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4faa585d6cf5da38359bc4fcf9135300a3021769f337124941b25015d9ee058b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USAT20001678.
Les Plus Grands Success De Chic - Chic's Greatest Hits
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f5248e6b332c496a5d903c984c382a3e529354938afe4191feedb9f3b61eed. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USAT20300835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20c2e46d2a8c70a8ecc3ce51929efc41e359fd186afa2a30b5d6ef2d6861332f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USAT20001676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28dccc5285cda214fa0757746c2ce5ab49e177cf4c4cf4c02c85bc893cf5887c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USAT20108541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28dccc5285cda214fa0757746c2ce5ab49e177cf4c4cf4c02c85bc893cf5887c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USAT20108541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bff82c02340a75680c45a2f4a391ff5aea2373bcbeb68e9a1e1ecb0268f9314. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USAT20102516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4bf8dd2f57f574dc9fa84ef3da6e3a2b70678ddc2ad8518b0993586bd7e57fd. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USRH11803144.
70s HITS - 100 Greatest Songs of the 1970s
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9054c52aed90bb812196c682fceaf2dfdca8626fc3d13a0b85b64e067ddbe63. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USRH11803159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8e0dea6748625331da838ba798262d5856e19ba40a20349009b79c1ea94386c. 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/USAT21301678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x596fe7ed53fde346a8254fccda8a2e4e57991d0f1eaedd9b3b43500a8583abc7. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/USAT20904114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3668bb706139b9f3f178189fc4bbdcba8db218d35d5524d81ba4fd555a29f3b8. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/USAT20901468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28dccc5285cda214fa0757746c2ce5ab49e177cf4c4cf4c02c85bc893cf5887c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USAT20108541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x596fe7ed53fde346a8254fccda8a2e4e57991d0f1eaedd9b3b43500a8583abc7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USAT20904114.
I Want Your Love - Dimitri from Paris Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e62652620cdb0df850ffef6c7f95f6925c7f45b120d45f13b387a552e344907. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USAT21001872.
Le Freak - Aristo Filtered Disco Club Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e7fc3c78f72debb20d4890ec4ed49c91391b40e299e5f139990ef2fcd10885. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/USRH11400920.
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