Chicha Libre is a Brooklyn-based six-member band founded by Olivier Conan. Its name is a reference to chicha, a corn-based liquor that has been produced in South America since the time of the Incas.
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 0x110cfef778a3175f287280b2ae5a7e684094edc9cde03adf842028de1c1503a6. 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/ac6b3f0a-b396-4c10-a7ba-cbd7c89d7c4a.json and https://artists.proofprofile.net/proofs/artist/ac6b3f0a-b396-4c10-a7ba-cbd7c89d7c4a.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 0xa992f450199ec15e128a53e08ab44cc1605073de0144986f7cd63d744409ac5a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USCNP1203301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd467ed08c99c351e54ff1e058a1f65e6e4183fcf3163af5c2f4fba2491b2212a. 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/USCNP1203302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4922755362c8f5764c1051366a2752aa81c2f9a122424ce36f4b95c4c61aa19. 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/USCNP1203303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8102af8fe71d63072f02451b9c44470c9dbe41937ac463cf0186b779731d67e7. 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/USCNP1203304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e514582a709fa02acb0206ba00c21372bf80351cef35399febdbc715d4b0f5. 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/USCNP1203305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x919962bd4cc632318c612b98fefe0a9648aed63ce6ff2d33484864b00a5151d0. 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/USCNP1203306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2ee6e7c34db5b0dda650f3c56b84d39e9342c4faaafbe9cedb13790b6b4243. 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/USCNP1203308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb28da1cc4086476f29ef61dc5066d8d4b299666ae646f4d48472a54b141df7. 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/USCNP1203309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19257e6f7312eb70e2c2ec7df9002a6a0e7ce3d66b6747f817623a7cd0fb8cd6. 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/USCNP1203310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf173e3e9aaad24fcf1f58f4907ea8184bc677272efcf4422febba9b69631043. 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/USCNP1203311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c478f8bd45d09e40001e9c6bcb3e10b73e88682a9d673e0e88a5316911c1b1. 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/USCNP1203312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd60404c896d6a75c68d21165470630f3e266b88f1e565f5af7a86af9d618d8. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USCNP1203313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc52870bca17c46bf3306c976dee01b4433b6c9b34c4b865c8afd36821c2b30. 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/USCNP1203314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x400a95698f5e330598e1b605d0354bcb5d6d088c999c0a7b5faac5ecc95eb407. 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/USCNP0701701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891f4e593f9a2228f296330eeb40aaf6f99d0591e0f287a849a7a4dea6322acc. 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/USCNP0701702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79017a530c633d2fe313991147db004db1d8dff9bfc17670028d652a2a378e03. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USCNP0701703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a09e09252ce81186ec65a0805bf8e4e75ae16e8b75c3e097520a37fc444543. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USCNP0701704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4e8e78c3491460d63614687752eb70de094f34f925a47f6ad0cf343021bb6af. 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/USCNP0701705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562c9e727a356d6166b427088464e1663bbad13ade9b06f8fc0659de9453c35b. 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/USCNP0701706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a6937b3318a04ebcbad38fe98a63bca6ae49f2d199d753c517143c02f533ad5. 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/USCNP0701707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10b90eabc19b2240c3e044c0137de073902801509c0edb379b40532c835f64cc. 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/USCNP0701708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a22f6477064bb8f3f8962eeb36a43d423d2a220b7ab90b14795a957873e24c8. 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/USCNP0701709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x640ea85a5d03cba5478394af8f2334f9a1a21241ed2b2c16e2ce7f64dc46b3ce. 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/USCNP0701710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d6cd8c16bcecfe27744063fb5de9ed96257ed77a3418fea18c0028d0a56162. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USCNP0701711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c3091f37d3d7c3bbaa06658c4b76f3cb713d0e8056fe1ad78822100e1c8c78. 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/USCNP0701712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2622aee33bc011f405042bed846d877d2449f3a577d407724789cc6a78296b8d. 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/USCNP0701713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa120b9adc5b457e4b6737f70baaa8d82f520717e60e0113cd6d6868d50005c. 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/USCNP0701714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x474c525b63a06c7cb08f94313f6e81bae0fa2ec8710b29676088ef553ca057a7. 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/USCNP2402001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1865a0bb88a4ab73a19d0080c1e89a114bb67ca84562ca46095651ed29b11ac5. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/USCNP2402003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bdb0985604f3e3d647e8814eddf8e104c35eac9ff841580d9d16619fae8a64d. 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/USCNP2402004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x474c525b63a06c7cb08f94313f6e81bae0fa2ec8710b29676088ef553ca057a7. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USCNP2402001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7866c71e58b9bd271ee5dcb92dbaeafc6e935209c00555a9a1b45061bf28b71. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USCNP2005001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc52870bca17c46bf3306c976dee01b4433b6c9b34c4b865c8afd36821c2b30. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USCNP1203314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562c7bce84aea39ffc47701afcedb0781c89da221fdffb1cc74355f93c8f82df. 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/USCNP1303601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f4e96a9890679e76b27478d6d9f713884c189a8e005ca667b301599957f8a2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USCNP1303602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x281dfb40b42472190077e06a1e9e28d95a3f369360d7daf4110f1e38e9048e9d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USCNP1303603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab9eed57ed39f86ecf3067a0b50c2c06dee100232b413269a2c29304fe5c2236. 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/USCNP1303604.