Tsuru (鶴) is the Japanese word for crane. It may refer to: Tsuru (name), a Japanese name Tsuru, Yamanashi, a city in Japan Tsuru University, located in the city Tsuru Shima, a uninhabited island in O
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bffdf1fc97ecb8bfe854e90f451c5e6f99e9f0c4278822fa728e40fd9333c80. 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/efce4b34-e0d2-46aa-8b2e-6106fd2b0dfc.json and https://artists.proofprofile.net/proofs/artist/efce4b34-e0d2-46aa-8b2e-6106fd2b0dfc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
ダンディー・ダンディー・ダンスィング
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf322d98df9a91e9df1a91dd5a2eb5d06b759ef1c740b04b38f3fba09b582992c. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/JPWP00700850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6173560e3b648c450682e893a972b557e15b544237faf3d4a3c1d5c6fd8febd. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/JPWP00800788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9443b0873e55820b113b873e886ea1074c8c65a83e4f9adff2716ec3edbd557. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/JPWP00800292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92de34275daeada90e4910aac3f2716c2b86821185885d4a3ebbadff05524b9c. 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/JPWP00801070.
朝が来る前に〜さすらいバージョン〜
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8592f73c18e8b996335feb9d8c290779d07bfe4a172e904b08e0c3260192eca9. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/JPWP01070487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca3786be95606bb1c12f759d0c679b2a732db705282fffc1fc2f5c8fac50fbe. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/JPWP00971527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e171121fa06319633cc64932a3e1336e242c62521c22487924c080a98a3a40d. 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/JPWP00971211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19ae7b484362cbe88224d52a7ddcd0b1c72820cfa82236fadcb24763cc7dc9a. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:39:46Z), 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/JPWP01070061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x817659ec68fcc6dff8c792a4b939247057fbf6c8d8f9787f5cb2da583a1e1dbd. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:53:27Z), 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/JPWP01070497.
グレイテスト鶴です 〜ベストじゃん!!〜
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc24b35cb745517d869ffba2047a891f8712b1466eee948ac26b2416b527fa0c3. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/JPZ921310475.
グッドデイ バッドデイ どんとこい
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3adf0606111d2c07725d3dcca1764f98018c48801201d9dd60790b583c24ca48. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/JPZ921711459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d787a759ab9dd93d762f9a0937f25674b8520c39054fd3a80310689a24c4a53. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/JPZ922000931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a2078843fc5e02cb6826f326148d68ec4e9fa6be75f87f7ef8c064b2714d10a. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/JPZ922000932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc328e165316d5d3aeb996322b862354d0ef1d4899f9de4a8bedf87f7873e36. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:24:23Z), 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/JPZ922404723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5cb30bc17320bd156d1d1fba7641dec0000850acf49aa22dc0a95f5bbef558. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:25:34Z), 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/JPZ922407303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8e294a0819de838ace9c6e020c08bbd8a77cb6b4baa457ddaeffa62a08b1b41. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/JPZ922502202.
竜巻一家 feat. TSURU, Lil DRAGON, HABU, Bic & JAGGLA
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f9b45ca01db08279ed60a383817681bfdc2abd590c2d15848e81c8a725b4359. 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/TCJPF1733572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ef4d9bed95faa9163c9a7f267e2a60ab93c3092ab0d3316088002158fe5554. Chain 2 (Bitcoin): anchored in block 960407 (2026-07-31T13:26:30Z), 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/TCJPB2424560.
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