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 0xa629c49b011ca6cef117a1e102859966fdf86b39b5428f4d7b5e9ffe8bf48ad2. 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/35f0ba01-0bf7-4861-8cd6-a887be457ee0.json and https://artists.proofprofile.net/proofs/artist/35f0ba01-0bf7-4861-8cd6-a887be457ee0.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 0x13bfb4f38adb7b401690fa6069c4aef4b188cde5604596dfb4756bbd19c2b079. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/QZFZ22317247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac142af5429374224651b0b7eb1e40f85cc7287e6f3cf1eead53a8aab558bfe. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZFZ22317250.
今日も何も成し遂げなかった (feat. 重音テト)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47355b4cb2b49baefd019db0ca86b6d3ae7f891a5dad6db32753069f0fd016ce. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZFZ22317253.
バイキング・ビュッフェ・スモーガスボード
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888acfc837f39c4b7760210dbd8e133bdd17928d2f34d4963416e64c18d67df9. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:55:55Z), 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/QZFZ22317340.
(ホワット・イズ・ザ) ワイワイワールド?
インターネットがなかったら (feat. 重音テト)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56eb6b61284ad06f9415fcaa5d9f7b9fc748b90aa29720de27a58fb2c08308ea. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/QZFZ22317401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4251bd0cd9075f3063dc75ba78383dc27df4ad1e3c16eef7baee969a5c3646fd. 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/QZFZ22317402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc483c61a9850058c73934814f45b62b19932fcea6f36b5854dd062e1a8aeb8ca. 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/QZFZ22317404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c1e5ce3b52b3652f0f242d64df2c681f810a8d8779211427f25ab753c37188. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZFZ22318937.
かぶしきがいしゃにんげん! (feat. 重音テト)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab90893fb3ef61ed7e90bd07963d6653d9b9ec632a17019a87ede769166fd72. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:53:08Z), 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/QZFZ22318941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d0ca2ea60ad937bf86d0dd43ee91649da7e07b80070cf913ce9ce8ada4f233c. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/QZFZ22318943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf77924327c1697241c91436a2be7c47ef880548336800f8d9997724171cd3a64. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/QZFZ22318942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13fa41aa952dc5d9e7670e6f62cd88888ea6e1a550631a1ccfdbeafa86d1bc33. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZFZ22317321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50e647a2c4f4ee063601a2a426babc20334de2c1cfc8d98eae7a3a2fd3ce3aa9. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCJPT2222448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df29435eacee651416e3f898f27ec33b36b324a020f89a16d61a7840ac07ad3. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:10:09Z), 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/JP92Q2400284.
僕は考えるのをやめたい (feat. 重音テト)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f77d91642caf6c2aa2077681502241c090b6ba399554aba4053fc6706fb3346. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JP92Q2401109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb33803b93e4686960bbd920bc517c6122f1e2c4844d0da93df736e773a720c7c. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/JP92Q2502061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfddac8828de7e042e70667c2efdf64719b3729e64350b1e2e0a6fc815e7434b8. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/JP92Q2502062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84783cbe6ff9972e7d51da12644046e008bfc0826c3ae75abd3ab2276f741228. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/JP92Q2502063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa39d0cf9edc84e42deca27c87b5193ef62c347b056f17fb1539ad44d40677211. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:19:12Z), 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/JP92Q2502064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e6bb2cd6aa5fdda71d38d7fd7f4463844eaeefdf64f4b3f5b6490b059bc3eb. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/JP92Q2502065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x521b06d294b366497e4992e04ce61dec8fbc9f41623bc2be962505722d8e232e. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/JP92Q2502066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a63d2e7c0ac46e940dda7d93b935678818c391aa4f477d689834cdd3ef6e6d5. 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/JPY392301525.