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 0x16372937504409f8553adf51ffd15d9840653457fd40541c3c79d3c4e055a90a. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/df238b7d-8ba1-41a6-b4fc-fbfba85421f6.json and https://artists.proofprofile.net/proofs/artist/df238b7d-8ba1-41a6-b4fc-fbfba85421f6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Eien no Gin - Regret(CV:Arisa Kori) ver.
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 0x4c86f8c359dc871b6d628effb93c60ee323531048ae5fed25701080b0d9eea07. 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/JPPI02101181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4149d76eb0ea9a1f17c349ac1016c1f57949c603972ecdc68bf330dde0d91a67. 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/JPPI02101182.
Alter Garden - Regret(CV:Arisa Kori) ver.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b53168e05a4b788cadecb68f49a36ea8ad6f0606d29a0b86187ac1e4e34c2f9. 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/JPPI02101191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x814bf0b73c879d12643549b14d82a36f59201a2b921644272d70eeb00068250b. 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/JPPI02101192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb41ff443b5730fa4a16b80ea67fd68149a05560541c41733fa1658b3c5d26659. 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/JPPI02101201.
Qai Senorita - Regret(CV:Arisa Kori) ver.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e4d27726eb9cbebf387213bc9780828574a4fb3d79a6584a7650c65dbcd7068. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/JPPI02101211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ff29cdcc337e3affb8f7c09ab99cde34097e5812cc592aeab531dcb799941b0. 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/JPPI02101212.
Designed desires - Regret(CV:Arisa Kori) ver.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d69b9056ea457235921c60d8fd72765669adf80b52fb9862086a9865dcd2cf. 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/JPPI02101221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43064c01e624dc450164488a6ef8da89cbd5be084412f0eb3d76f701faad3ab4. 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/JPPI02101230.
Inotterudake - Regret(CV:Arisa Kori) ver.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d09bab96f77f189dc0a25a7d936c1754ca995a06c9c6d23ee70e4a5b169429e. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T08:11:25Z), 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/JPPI02101231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb38ea84157f02ee43734af5f10398698bd67ae018c0cff77f2e04ef796c6311c. 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/JPPI02101240.
Miss Conductor - Regret(CV:Arisa Kori) ver.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab8f5ead0d0fd263fcb1a4836946a984c00d2dc713e932c8f3edd527d7fff76d. 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/JPPI02101241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1401871ef40ea83e291c5873ece250b9c9a1f02ddbd6cc51e0bc7ab82a0eedcc. 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/JPPI02101251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdb1141b1e3a02acb3e9a8a40736de9ec09ed73bea7d7e6fb0b68bcae130ebf6. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:02:22Z), 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/JPPI02101261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe869464e9c2f207de5aedd7e74b3b3562009741c18e245fb437c73b2b05466fd. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/JPPI02101280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c3f199bac3b27d19cd2a983eb8cbcadb72f7a7a58c0579d4971a0a09fc49226. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T19:55:18Z), 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/JPPI02101242.
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 0x837b6fa31085f16aa89e7297a279773d5954e0c79bdade5cb7f19849ce9eb261. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T21:01:41Z), 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/JPPI02101262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x296d70c43119a3aced1623467910278cb6d63e71ad598c6646b020c0b4359ae2. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/JPPI02101202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b1589173e731964a232242ab16ea9ddb692975f9d261390c5eb7628dbd744b. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/JPPI02101222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68185661c9171e7c581758b6a2541b52025445f55e36fa0bb8647fc94500cb53. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/JPPI02101232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b7e8c91f36028067c19394bba5765a0abd1469b83e46a21aac3b93a32efbebf. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/JPPI02101252.
Cosmo Dancer - Regret(CV:Arisa Kori) ver.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba230c88f96e61b2ff18c00a2d0efeca54c7a5044f7fdc5a3a0946875d5ee1f. 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/JPPI02101271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x233f07af0bc718fe5e7dbb51a8be9e2284b1ee8dcf12d6c039893a102269fc37. 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/JPPI02101272.