Charlot (; ) is a fictionalized form of Charles the Younger ( – December 4, 811), son of Charlemagne, in the tradition of the Matter of France. His legend may also incorporate elements of Charlemagne
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 0x4445ccca73a4cedb9369994ca35d3f8c32aa600595f2ad953686053cb8181c9c. 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/4dd65670-1339-412f-a09e-fbde9f442832.json and https://artists.proofprofile.net/proofs/artist/4dd65670-1339-412f-a09e-fbde9f442832.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 0xad90cc207a951a900aa46c90e1ea586c7a0ea302a41d564bc29cda1d13cd6cab. 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/NLSB72300490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64c761182271fa010a56cd8d9d3ae08720d10fb3b82fa313266d1a4b63600a7a. 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/NLSB72300407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a47fc2556104e0bce46e3713c2bbd462df543b23ce68d1b51ce8a40f5c3d7cd. 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/NLSB72300045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46d6c7f177eb5668172c05e9733ff467d253a9e17991d368a57befb1cdf080d8. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:38:37Z), 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/NLSB72200786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93edb8b725fb72ff21a4346f71740c151bdaca98802c41672a7837226e20c6f6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NLSB72200935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x604892efc04b0634f3041d7033b5e6656c4fd5c8777ff346022df8f768a64fd3. 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/NLSB72201668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85f437ab0b5f71bf7750eee59c207883122372e75e167a2d90eaf97c797c5c3a. 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/NLSB72201729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d2cb07e9e2fe1f15fb7470944d152611a493fd7a8916ae24945df8165ada1e7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NL6DP2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4fd3b0bd206e17f14e2ecdf0f59ff4459ebfa39ea2ac5b440b43eedfd5c4730. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NL6DP2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa00d0ccaa311319a6cc1b9e13667620544f7ec614bacdc20a1b606da2c7babe6. 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/NL6DP2100002.