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 0x5837537844f593a834e53fb7f13f4a6797109a2d1e294fed964e154c052a2cf5. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/680ab7a8-9036-4858-a7a4-51a94272226d.json and https://artists.proofprofile.net/proofs/artist/680ab7a8-9036-4858-a7a4-51a94272226d.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbfcd10609c5014decedfac94d9cacff535265a1c20b20e3ca14ddd1472a2566. 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/JPU651500810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5423eaec4ca171da502ef548b178ee11c8dc89b2b0935761a64c521f5e6c218d. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/JPU651500870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39d852d0ee7d7ca6c77da842e4188ecb0c59a8152e1575c8aff76124dc11a23. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/JPU651500960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78af7d1e9fab292f6248132bab2327c6b7b5864fd6a7caf83c00a95a5c919dce. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/JPU651502900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfca0222a1dd8b020b306873af5d59116316809c6ea87942896aa8e69fcb0dc8. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/JPU651503010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4c6effbdc6b058ef7d0c38791b505e0a7cb3c0ee4bb6b009637faa222300fdc. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/JPU651503020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e7eca038f658ad1fa49c921cb86a13d43f99dde7a02e7684a275857ba891f0c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPU651503270.
Ignition!!! (feat. 松野家6兄弟 ＆ ヒピポ族と赤塚区の仲間たち)
Ignition!!! - feat. 松野家6兄弟 ＆ ヒピポ族と赤塚区の仲間たち
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc2a683aa313fe41ae93e5ce761a1bd2728c5172213cfaf2b1b6b332360a006f. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/JPT552200683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ce9ede3467b5ab555a655a8af6e2c00395b0698c9df65a0177bda4fac53f13. 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/JPU651504000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ce9ede3467b5ab555a655a8af6e2c00395b0698c9df65a0177bda4fac53f13. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:42:06Z), 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/JPU651504000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc717c41f5484aaf6dd5ac2a5c02b798a2919b488477979dd4b8a7a340d5823d2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPU651504080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5ed05440646fed73eb713163ae0aaffdbf14cc5e6a20eb9934e8951a5a88a20. 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/JPU651504090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db39d30e5083af7431d522724a7a9b05af10b96fef1f1e9dc34aabc7be68964. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPU651504100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6efc58efc5b97c3119cf63c7b4227d1b91cce7af00a22df407b32e94c023c257. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPU651504110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af81c4ad03307cd50243f1e3807f36c3317df549efa2e96b96fec9bdabad6a6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPU651504120.
タイムマシーンにのって/家族の風景
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd0d7f4039ff1309b3834a589fd90db83f17cba67183441a1f2d90afa9febb0c. 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/JPS801400393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x437044fb71019f703ca365284b5cf98b779e3905e23f7181496cf3a249edcd38. 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/JPU651503200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea1da7c87c14771740ba0c1f6145f39933887fce8ac9fe6d3366a180e1a6d94. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPJ902004940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb23e4df4f02e383b0b473259cbd348f8d74d4375304ba99824a181340b9bed7f. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/JPC971100526.
Imagine That (PUNPEE Remix 2008) [Bonus Track]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316b8bcf0fec26f860a73e8a593068d9383299a07f8e7fb374ad29dc84e9e8e3. 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/JPC971100541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d55f38a56253bfadfd083c790669cb788fe208acf068a90cecc7614b9e52379. 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/JPU651505870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92c76d880a59269933f516bde36a1980dd8106226cd1d6110276491cd29188be. 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/JPVI01519940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da0f78f327d1a970a5376a7151809b48e0df053afeef7f81111cc387c135cb6. 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/JPVI01519980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa50c488e0b65fca34ab106a2d2810d45597c306a4e9eb0295a46572e559b92de. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/JPV501400442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd694c1e2dd29dfefaa965442e644cea4839259cb5b3abe7a2a1472d47060d1. 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/JPPO02201071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d48e9d29172eb15815a18ed9385274e6113e929a84e4c0cd7b3330769129b7. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/JPV502100440.
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 0xb7c96490b03d92b307113aabe3b21b3029d3d73c468db264ff1cfea30a00ecc9. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/JPS801200032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a301182affe84e7c8a43a9ed5e058f97d04b6fc9539a81b1751418b506ab43b. 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/TCJPB2499700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x065f04f0b5571dbc0a12665df5d7e608a575095efee6584274d1d12762f25f71. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/TCJPB2499748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf50933d8590b04e0070da380f18495e943c71597742f51a87a8a75883c6a143. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/TCJPB2499778.