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 0x1b57d723ee6ea5f191d03ee65879cd1b75890e14b42eb9e541f99dd03e41a851. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ce4daa59-0e70-4a22-bd38-a32201f5ce85.json and https://artists.proofprofile.net/proofs/artist/ce4daa59-0e70-4a22-bd38-a32201f5ce85.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Roudoku Kissa Hanashi no Kago (Vol.20 Another Edition)
Hello Kitty 50th Anniversary Presents My Bestie Voice Collection with Sanrio characters
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 0x4fcf9eb496ed4dddaedf73ed6537c4a052aa51383aff98da88c67f1a271808c2. 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/JPT552400514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08316da6aca768a527f1b858ada4150b3b8657f4ef509c63b32bb4e6368cd9ff. 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/JPT552400515.
ハンギョドンのイケイケサンバ - ハンギョドン
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5d007522316a0210ab47ea2fb4aa5dafa4846c09d33d4a090b74194123b38dd. 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/JPT552400516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76e52ede33cd6a56dd9d054972b220b11cf64f1e46926cde98f6aae3a53b6ee6. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPT552400517.
ボクはペックル - あひるのペックル
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ce84d6ad935842554638e685f162d5e2f81a2148fb1b421b56dd65c741a8107. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/JPT552400518.
- 朗読 - けろっぴの冒険～けろけろけろっぴ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888287c4d1e03560c6e36ceb529009c86100b089ae46375eb8014c72ef1fea82. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/JPT552400519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf446360a58b514b250240caf12d62d045070d50356bd363c0c36c7a5304555af. 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/JPT552400520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e5fa9452a1841930e023bcfd3c52d9e1e645cdaf3464a68f74b2094b01caa2e. 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/JPT552400521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2efea22dba61100c2fb343c177c6ab7aab19e2b2b80642f6794990d0b47700c2. 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/JPT552400522.
ココロをつなぐリズム - ディアダニエル
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f0682db9a38e7def7061fab462a601ff25e2d48a2a3a4f9eaf9cb45c7e0534c. 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/JPT552400523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced92d253ead3b287fac629474151ffcf104bf707ace2efd864ac446e499f639. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPT552400524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb6d82db073c2668437e26d4a4fe2b2c7ba1da28584b5bc91e331f0035a2128. 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/JPT552400525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6333a59365d5d82192efc9711da40df8112dc10b994b2de6ba8c986d880733ea. 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/JPT552400526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36ce7c8781d13fd571b17b794ce27bebbda69c8a41c2ded361fdf8eb6a3c1b2. 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/JPT552400527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb826e229c7135daf0074a1663252e906e7e559a8bbd5e55348d98b2659d971e3. 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/JPI101801064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4080da2c367ee2e2631aef556642d2071eb728019d3e5162173bb4688678c161. 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/JPI101801065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d36026a6d007c9da90ab0399dc76d74f3e131f484782e457693f85b36e5a11. 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/JPI101801066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25539f3c46c39bb81a712309588c29e66d4af23848afd15c57ed7d786e0768bc. 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/JPI101801067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca8bce9e44d21116e8879895db54ce4ad3a88fe0a93a48d48dbd52cb883bfaf4. 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/JPI101801068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82200aab39e318f7f85d07c695a2307b143a576116a3c2854919527d57ff2773. 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/JPI101801069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c6a42c7462f41d94253596231774b3a15cf57933577431355c538fabbed076. 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/JPI101801070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67c87873f8190016708a7ef5dec90c60917e8cf0bb2235d5b34eb37aadaf521. 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/JPI101400702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ca18a7adabcb7c01b8eee86bc78e7bec35e825cfeee1a23a7594f03544f3f7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPI101400703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db842621c13f8633a25d4dfe6ab421893e53f6f19aa666cc075322bb94f35e8. 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/JPI101400704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81be9e361b344b819dcef1c941749670c88542e49403f8cae41429bb9f6bc1b1. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPI101400705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cbfb228b2d528481e8af1824d1439072cfad66fe2323f2fb0758acae627bef2. 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/JPI101400706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4634286ccff3bcd341c046cedfd47d5eeaed9de48ac22e8cc848d9de8756951. 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/JPI101400707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6daadb2e82e204ba0580ceb9f39e982eb422d92ec9045843be57f30b318868e. 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/JPI101301560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0298bfa459dd873b1f3f9eaea607dc628b1c67aa29c92b73be6d74f0ec84e261. 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/JPI101400710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x533b696e87fb0519a2c59d05c7443502ed286723b14c01fa265c91a7a19d4d61. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/JPES01103181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3865d11910256e8d7fd0f0eedc7c2ae14b8d2422ea27fbc467217c019da6ff78. 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/JPES01103182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6adff3584e3f3d03ef6477e45ed2d2d0f6994b90db9860a8a5fe12ea79145ef2. 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/JPES01103183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb47bdf549adcb0c48d4323fd26ebe847b4b57b1d091d845c2ee57dcec69f8712. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPES01103186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d0d2cc9b76baf944da7da89cfd3b67581bf034a61ca660865132542c74d897c. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/JPES01103187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9aad6e428fca09a225b921b4ac1840d29cbe73db1534829cb1b1a54a17ca16. 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/JPES01103189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57f7a8f0bc710078e45e838588e343d1275d715da7913c55852001aeb6e38026. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPES01103190.
PERFECT MAGIC - ☆Taku Takahashi 超東京マカイゾウRemix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x321955fb9def71024a7859a90ec86b5d88e6ec455580a74fb687918df00eb176. 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/JPB602204765.
VIVA LA EVOLUCION - ☆Taku Takahashi 超東京マカイゾウRemix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8a74d40f9a9eb9d41cdd8dd43f198dfcc2689e4805dfe588d4d6c535b747b0. 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/JPB602204767.