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 0xc8feab6109225a90a5b04b9f02c11e09482a431253955d925d49193695298ede. 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/5a1da3e9-dcc1-4370-a079-eaef7ab06611.json and https://artists.proofprofile.net/proofs/artist/5a1da3e9-dcc1-4370-a079-eaef7ab06611.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 0x35ee95c3a1a910133dc232a87cbde60186169b32b681b9d4aa23b5c4307211a4. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T14:02:08Z), 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/TCJPN2031398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa8f99b6bf5f4a042683fcd20faf02fbbbf68695c263536c2789d6993af1de5. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/TCJPR2211108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb491684d728926a9d2e51ce97a733ac691d7caa4a04d08b747f4e5c0d3f04795. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:44:44Z), 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/TCJPX2331529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb724156dcbf6af0989be8c6ec40571790932cc8b9acfc1850749b8434a03abf4. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/TCJPB2460169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb724156dcbf6af0989be8c6ec40571790932cc8b9acfc1850749b8434a03abf4. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:18:49Z), 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/TCJPB2460169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a45eca71f70aa2b847df554d2f1a46cb3da2f05b13ba349350c71d2ac816f5c. 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/TCJPB2474271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f52ed3ea750b235fec6051934fe9f9e83f5f1624f107cc366c2df780f2a4dc. 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/TCJPD2400499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f52ed3ea750b235fec6051934fe9f9e83f5f1624f107cc366c2df780f2a4dc. 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/TCJPD2400499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c3c454f4dc69aea8ada1074f53873dbb51cbf1248a45dca0ec7a6373b0f428d. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCJPC2497456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b186ef30040eb2f215e827862b90ea60c9a30ac63c979a47a6545430359441. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T22:00:14Z), 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/TCJPD2409957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b5a9868262f61bc4f23cb726872dbf1c6d640c1a23590771495476cb08c1b5. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:28:41Z), 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/TCJPD2409959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f52ed3ea750b235fec6051934fe9f9e83f5f1624f107cc366c2df780f2a4dc. 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/TCJPD2400499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c3c454f4dc69aea8ada1074f53873dbb51cbf1248a45dca0ec7a6373b0f428d. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/TCJPC2497456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d1a4eccb90517afc40b4597004901b772e60228de588a1819e9031e889b5cfc. 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/TCJPQ2106408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d94337cdaf1a84d42b84413646d74d0790c0c7cd5de4cfdc8d34272fe388a79. 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/JPY392401774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x471b9fc164dfa9da3eb301a0ac4d707fe2197b5169181347ddbd2c39417c6b18. 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/TCJPY2485354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe428a798f08631b8db65cdf37ee907596bb739b1ca3e35714a3a7527892e18c9. 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/JPR502410536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0269b8011aa56ae9227df15a9c3353f002140862e45e46fdbd54c43f8e5e4672. 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/JPR502410537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c7b6090da9b703d03a73ad2534e621f9a0d64f7ee3c6049fbd777cd1bd0b47. 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/JPY392200337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26f971abf5ab91cb3f5e657642538469641cb2b72274c045797e27de26bad38f. 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/JPR562300219.
音楽的同位体 星界 1st COMPILATION ALBUM メタファー (vol.1 詩想のメタファー)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c5a466bb693f5942bf09068aaf66adb31486b516943836dba035ed2b27a73b. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/JPY392301012.
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 0x0f82a03bc44f4595adbd11c7bcf2a7401dd55b63655d10ce8cb78863b5cbbbf5. 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/TCJPC2463596.