Azur may refer to: Azur, Landes, France Azur (satellite), Germany's first scientific satellite Azur Air, a charter airline and former regional airline in Russia MPM-10 Azur, train used in the Mont
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 0x7e3014113b61242f09dd7353e5db98d95cc51c7db5ddb69d5ecece95144cf045. Chain 2 (Bitcoin): anchored in block 953662 (2026-06-14T17:28:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/56805715-0ce5-4d2b-991f-d012590a0e86.json and https://artists.proofprofile.net/proofs/artist/56805715-0ce5-4d2b-991f-d012590a0e86.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 0xd4ef6f18b59c914c511187f6da7e3a6ce93b4525c39377c4587f9500f85cd8f4. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/DGA0Q2396335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab2cbdbbd1d1978454f9e0a001f9cfe98ce38946cc551a27c219a2125afa8814. 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/QZTB52236060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31167e257d290ec98089b4674875a34efb4d5075668aa6df5894d97fce680f01. 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/QZNWR2016196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30026196f54e1f63e578d5943a3a6df5cbc88e2b90366818d6ba60445f6295b0. 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/QZHN72028558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2a806fe47bc32dbaca6bf228ae3d8de45309edcfeae256d959848374c4f366a. 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/QZHNB1922487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x228d5fd893bc8999a8ea03503403010996fa7fa7d70e8700147c1f6008304689. 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/QZHNB1921755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5d1f0bce6e30fd1bd84ba2de5a10fd93126f37fbd87452cd0f11321af7c9625. 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/QZHN81937963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d3e61740d17add49853624305d0892ba3364209063d8a75ee8ee0817a2dfe1. 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/QZHN51944064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3caec4304a91941c6ae6e56423dd7cdc61b2234e5be81fbfb2aff37ce9fb9ed2. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/QZHN51920697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8876118c3b9a18fc5a3df69e23f33a511d3a91c369380bb5996c88d9f6994b6b. 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/QZHN41985936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a5020cfd5861172f0820d2b880b16e2f63a10875f75a56ad861829861fcc56. 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/QZHN41985464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b0094e3e5ad9ac23a97a80444cf64bc60245322671239a0144913970025fb9f. 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/QZNWW2090503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd49ff9421995e4f2ddda99c6c2166cd1b7f0081da1af64fd94eec6ad3fb66c. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/QZNWW2090504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb81b607806f6dc830cfed92114a8a58a5ffc1273cca1efd6566f25e4cfee591. 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/QZNWW2090505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a140b801551b443f37db2891d6b024ac2065b700489d03546bd08de1904e033. 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/QZNWW2090506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe27229f9602ca6a78fe4e9d59bd64cca36d8520937f7843cfbc5061a93d25146. 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/QZNWW2090507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0151cb7654390a1ab0890be46666d92e9b8c57c56a050fb39e5ed89dc7d75b1. 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/QZNWW2090508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x183384f13e25e0f5092459f71b9be7485d12b77e75eb6fbfd20f53cf80a28134. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZNWW2090509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55f71f078ae49abee018e37f7118b8f1e5582bf7c614f3530adff3cdc20de9ff. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/QZNWW2090510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c0622bdebee464383bed56ee0984c14796d422d9c5dcec8285aaee188fe3091. 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/QZNWW2090511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x679ea3935dfe3675de8f06522cacf0f6f7033e6b68b8fcfd21b9ae1d55a1f95a. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZNWW2090512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fd8e352ca73f577ab0a7167a1f0aa0bbf2804efa21b3bebaf74bb1b82016300. 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/QZNWW2090513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff0db7d45bc846c7124454a3b3482172145750b94d935f672a77cc7f25a4b1ab. 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/QZNWW2090514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4e19327286240c0bf7f088625d43d6da91e3c4500a376896dc148fdf02304ef. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZNWX2057492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a958213fb81953c5e0ca8a2a958e2f0724be4b12c8435c44b94a1ddcddc4cf. 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/DGA0Q2396327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x660ee3f0fb740511494ea8ba2b8fa2c0c61b04b387ff40160f774d10e818bf28. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/DGA0Q2396329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cbbdb9ca0aee16642e4f763cfaa7da2590ac51462af74dbd325e47e52261862. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/DGA0Q2396332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab24a81166c0239105cc5e07935c706a4123267b4cc4e14e561355d0e482b2f. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DGA0Q2396336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2057b985394f553dae979dd9b422e0d3e2722918e878049888239f1bfb986c33. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/DGA0Q2396337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6761aed3655d71dff441590b1f6df2b8bdbee966bbe5aae819aacd9bde11b5de. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/FR59R2443122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4ef6f18b59c914c511187f6da7e3a6ce93b4525c39377c4587f9500f85cd8f4. 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/DGA0Q2396335.