Aozora (Japanese for "blue sky") may refer to: Aozora Bank, a Japanese bank Aozora Bunko, a Japanese online literature library Aozora Records, a Japanese record company Songs "Aozora no Namida", a s
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 0x4d9aadd226cb6bde1f7ff53712ba2cb0f5b25531e00a986e247d75f67fa1f69a. 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/0cc9cbed-ef03-487a-82d0-5ea1161615bb.json and https://artists.proofprofile.net/proofs/artist/0cc9cbed-ef03-487a-82d0-5ea1161615bb.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 0xaf9b380e48368f01945a8fc76de2107b8c13f40bc87fae39f41724780b605cb7. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/SE5BU2571230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b0357bc2c134ace4081c9effe2eeb29e3709bfb20d2f97393a94506ba5834e5. 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/SE5BU2571231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f9698d11a443c8c2dc97f15ea526617a3d778a2c04ff6a109452dd35c869e6. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/SE5BU2571232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54d687f62b2ef80f18ba1712b4d78cc4f7eacdabb223e9c3ce5981f93c744672. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/SE5BU2571233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe13e3be38403a6bbdee5e26a58f0cd1bfabcd75e67f1a1c20370bb97db31abae. Chain 2 (Bitcoin): anchored in block 958613 (2026-07-18T21:35:09Z), 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/SE5BU2571234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95ecc42cf22eab4ff21a6c3a3fcec0fa67cfe36732e0db3c5e0995b479e02eda. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/SE5BU2571235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca569235809207bd8821bd9328c0036b27e756bd2a54b0107abe47426602670. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/SE5BU2571236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49665859e4155b06b23672630c27fa8bdbae726858de2e95e50c4f2495e599c9. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/SE5BU2571237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e878573e0cd4fbcc3d9efb1d15e6c8bf00fb2535aef80e6a7d09d442c72a05. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/SE5BU2571238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8e4ce06fc8a2729821acefd997ac39545162d461597c1ffb088313dc1b0b58d. 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/SE5BU2571239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f3d3356e6de0d20b0e9389838016a8716d2ab86d83643dd2fbe2c9f7bf4ad2. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/SE5BU2571240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c028f6f2ba4cc5c738b5d444b7b1b7f4a7904b3d97c7b80f758f90e8ef0ab27. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/SE5BU2571241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab661a7c80235138d492f27a6c4384ff5909234f8f90aaed2fe1faa08200b97b. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/SE5BU2571242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f97de874623dd29c6b7df3ecd3333dffb717df94c5cd485192dc798c3c57663. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/SE5BU2571243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4fbdbe8d5ed5000ae261d8718e71aa8526d222fcd4e7cc20abb5ec82e50a9a3. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/SE5BU2571244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d9271f1419abcd42e78ce3e5eebbb6c665df4561163e5665b5911348b07c398. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/SE5BU2571245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1368d5cb4088ea54d0a18c52b11f4e8597daa2c56c871d652b6be3bfe0c50468. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/SE5BU2571246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71343ae31c262029b2fdb8360d9b7756939ee55ee21358111defa10949c0ffce. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SE5BU2571247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b94eaae8ce04be7654da1dcaaac16054ef008866a484239a61ae58a1346e31. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/SE5BU2571248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x529bafd9bffa6d0bc66ba6ec15e533f032acb0cd12db4068d95fb5dd667a1e90. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/SE5BU2571249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f8a7c57d11aa37ae9e2d570fd592574bb9aa17ae5e60f2dad2366b964e15f6. 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/SE5BU2575248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a3308c4ea5b77e90e83bd29bb492753869d4c4d8e236c6634b8a1b0e438e985. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/SE5BU2575249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x601da1823690378afe6e22045a8eaa89d2172361055cfc4ea6f4d9f8d7ea9256. 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/SE5BU2575250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c72ddd0c18aac3f85a87bd0ba55142c95c58eefb1e16fd60fe33f4080baa6e2. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/SE5BU2575251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabd36a9e12fedbe29b28fd6637cbfb2d9f16a5f242467203bc4ff94c18248c49. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/SE5BU2575252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9165bafe9e72d420bbf8e921d0bc18ef2ece01ba4150a0ccf89f6d62dc3d302. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/SE5BU2575253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe3ea833561a8537ce23871568c7826ff127321f844db4634d20549da6b3a433. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/SE5BU2575254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08c58ed6865f1ed9b14af4bfec5417f73983a5a84a8f9d1677b5fa82a7109daa. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/SE5BU2575255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x943950328480eeeb20e6b4c7531b950a997804b1e558cad616c810d200ba8941. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/SE5BU2575256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92bd616461d06df1d301f4ec82a005283c1502ab00596c69bee3bc27c2e5e975. 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/SE5BU2575257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86a9f48f88f25802bd4cf14f9b8322d48b52c5abddcd1ddb90d406620adc1cf7. 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/SE5BU2575258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x615a8d99578d2afe697b5ce23f7ccbefb43f9a0ed302935a1ba0f6dccf1da3ba. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/SE5BU2575259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x642ed95a64eda2e207b7d51e2b66e382789727ce9320e11e95d1e24e054d865d. 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/SE5BU2575260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b5808a09cb214b4aa6a42f5ca2d19bf8def020e7a16de158ba68d5692e8f94. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/SE5BU2575261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x701cf48ae7793bee6d61253d3e8b5e75136171db826b898e14e9fba2da923e88. 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/SE5BU2575262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14a5eb346fd1ef1cc344aeeb6020281ab73e241c96a256af5540d52933b04c85. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/SE5BU2575263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a39865aca2739ec99674e3e2a147aa3cddd1ac9d71b33b86017857bcf3df584. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/SE5BU2575264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f031558cb598fb1de8cf7b3b639e3673c0baf5daac953788ff21c7e9332227a. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/SE5BU2575265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6408c79e66d9130cfdd09557cd605ea7ddedd8bf9fc99d096c7029ab478184d0. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/SE5BU2575266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c98711675504f8dfd2b91802291afa8af4a6bb2b3f4df7c0cd0d081b1841fd6. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/SE5BU2575267.