Azul, meaning "blue" in Spanish and Portuguese, may refer to: Arts and entertainment Azul (Los Piojos album), 1998 Azul (Cristian Castro album), 2001 "Azul" (song), the title song Azul Azul, a Bo
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 0x1db86a3ec67093c098aed31958d5041a02f5df179f3b0a1d01a7097987c4eb09. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/28e8189b-400d-41b3-a2a7-23af30ad81d6.json and https://artists.proofprofile.net/proofs/artist/28e8189b-400d-41b3-a2a7-23af30ad81d6.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 0x69d330772269f9ad9ccae24baa119c1b6923a355f9e6615573d24b1c4ff1b814. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZHN32361828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0966f1e8054cf067e1375733673c4e8b6c6fdb33caf659fffc9b92dcb5aba7b. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/QZWFP2319947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa63d2a70cfc5af84dfd67c196981acccb6e7ac8e3864ef866dd1b6d9061166a. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZK6G2476042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c5900a526426a1853990be84c331d35871fc8420182dc92ad891a3eb74d7d08. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZZ7P2440076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e78a1f9166da383cea5a0b8c2f3ec48ca81487f4611387c06de9880f2767a3. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZZ7Q2491485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9e913a2c987e22dbcd475f54b8208e043e0995af2cb53456ecfaa2c590ba2ce. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QZZ7U2409774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55919e4c82e49c680669bbb2c1047f7cb05a27674b240c0ec09ba1b7fcac300e. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/QZDA52565658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d9f85308b71c2533e327fcddf2a9c7d8a46f9ee14b77cf1927198ed1633be6. 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/QZHN92560926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x233ed60d4c409332d509f34b7933a6b1183b08f45fc2182aea8a91bd2143fb16. 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/QZHNB2555338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c6f7e8fe73d5709db24264d6f44099e4bde6edc711b3cad991e9f07a8a7ba1. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZK6H2511963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x255c721415380502231db804fb37c237961eb10659b0a80834f9eae4c115d0e0. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/QZWDW2566527.