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 0x2cf472fc4f656be33f8312e80e1f8d34fafb92845fe97ae4f84051d8370b53be. Chain 2 (Bitcoin): anchored in block 954031 (2026-06-17T01:43:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3b075eb7-2914-4ac6-9f71-53f9a5c02e52.json and https://artists.proofprofile.net/proofs/artist/3b075eb7-2914-4ac6-9f71-53f9a5c02e52.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 0x6ffec6193898fae3aa8d0fc538dbdcfec5dc2b63ce6410b6281758e67083b1f2. 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/JPH492016005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09b6980adb2840530554f630147ae954202968dc38f2341d9a94138e2cc021b1. 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/JPH492016010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd4238dba9c10601b0ab24c4e0723bf981408fb2dff9cf7b405f7d19832b87c8. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/JPH492116088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78cb662bbb2eff06239a3cfb850f62c735c1b6539f213c11af9fad081d2be024. 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/JPWP02270303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ddf46d38bb5217cb16d2fa534eb041878d63af7c628b4c14fb787cd66c130e9. 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/JPWP02270304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd98473a7768e92b7e582239146eb9fddf6a0d8d2de8e4963f11e81e9333efcc1. 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/JPWP02270305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x462dee4a6fdb41166bade024d312fbb80cf7846fc08da57822c5c0140a85f934. 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/JPWP02100494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb43eec0f78e121180b9a97a91f78462d6a36956d5e5491bcef38fc7bcd31091. 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/JPWP02270307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b6a47d248dcf159039e75ea3dab8ca1efcbd820d638c2ba1430f4abb7960f4. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/JPWP02270308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f4beead7a22d6196834780fbc7c99b19a239af725a07d78cd69ab815de8c2c1. 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/JPWP02270311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b1ca24f8d50f1ba34447ae1a032f31c92895510baf62468ee27934574e61fe5. 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/JPWP02100793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42005bf7706a8a20d642bb18e6dcac606d45bd9406f4003c6090fdbdbf63e91f. 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/JPWP02000145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8901d733f3bb2794756473cd3337ee2f355883d2495eab819915ff0fc337872e. 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/JPWP02270314.
REFLECTION (feat. 中村佳穂) - TOWA TEI REMIX
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8257fcee684324847f4c10d92a7c260adad7a3870feb9f0e6c1e4e50c5bb3975. 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/JPWP02201875.
don't like u (feat. Neibiss) - STUTS Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d7c9330d55069e636e588741360ddc4d249fb0a40a0d45b2ceb399b221554c0. 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/JPWP02201877.
VIBRATION (feat. Kotetsu Shoichiro) - OMSB Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe45597cec7c8aeb9637ec48f645da6651f6cd7afc636271b69b0c29eb9941a42. 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/JPWP02201879.
恋とミサイル (feat. UG Noodle) - speedometer. Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe083bf7ef9fff9d63c89be993bb49bb1e86d1b9f6d6e25dbe199d7216d2e22f4. 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/JPWP02201882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc20db13575bfefe91833d6c7a40b499ac1c2dd8f6a20725ba3e9a6b5e5e4689. 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/JPWP02201884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b1237ecbebf2c1c85a4f1d84d56a2e896e3f4585feb7a85772f2916241a859. 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/JPWP02201881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c312d19319bd9b084e291b66396f215f13d6e8f4cf60b35985881078094d6ed. 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/JPWP02200791.
わたしの一番最悪なともだち (オリジナル・サウンドトラック)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8acddf6e8ff5ca4a8a58fa50a12bc7010bce255d15bae75029443d63f6a3283. 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/JPWP02300947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82edbfa0bf2cbd9be8e76a4a2675d940d295cc4cf90aa8a05b792e61073c6fb7. 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/JPWP02300948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16836746a63774603c8926a0ddf1ff415532a25e8adbc5a39d515ecf95b81fd4. 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/JPWP02300945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c7ca9187616f762e32ad3ac978e55c9ea3b6ab5407aaaf1c53991e0b9518bb. 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/JPH491801177.