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 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 0xc369d03390852a55c351234024ad02821f1211d0ca78b907e1d450f19343ee04. 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/2517127a-2014-4565-ae87-5e8af40e1c33.json and https://artists.proofprofile.net/proofs/artist/2517127a-2014-4565-ae87-5e8af40e1c33.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 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 0xab68e781d99d671a8c1c81b8a334737de148eb7c5d6af83d66fdd2521e1d80db. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/JPR562300000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf59af27555cedf1bc1fd42d4a6cf82b918154951a9967e3db18259ef74068a5f. 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/JPR562300066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x541fb1161dd3a0da11e68d705bd91e2fbb6492f670588ca325eeeb5bfc29d701. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/JPR562300092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d3b2c762bf6361edcb4d0c13d12649729dc4753c1a5ec9b39cfc0d7b51c0b41. 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/JPR562300132.
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.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ae3c751aa479bed8f02b8bf913b305d2331215ed231305f89b9a6fda10ca10b. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/JPR562300234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294527e8bf73df0192cf60dbbd4e6bcb9ea144933321710eea0c95fd6e6ed96f. 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/JPR562300242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a1f81eb467da2894e70248a40b84195ccea31eb5ce8a195f5e36182790440ab. 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/JPR562300240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91fd42505e129e722fe4ffc863d7ee43cff471ec467e76fbb254819801c5dba8. 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/JPR562300236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c10a4fced4985a8ffd23d1df22c0b1bd287b1fb693398f55c39eac42e28e5a9. 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/JPR562300244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e5fac0430b60d90b76e0b77254db6f0a000358e521489d1e4e4e833c68f271. 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/JPR562300223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e8489dc3c8063ef1978a560706ea45b9a100da0bf249adfed32937b11a694d. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/JPR562300232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7435f04115d0193d9e57e16220a593d08cbb72ba2565eeff67c6fb7df493d76d. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/JPR562200498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaee26fceba01c4e37667e826f7d6f013fe7efad4f95471c34881efb722ef3fb6. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/JPR562300238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55fc323a9b8de5885cf7f39eca854210a7c3da2c3ff99f81882c1a8fb0416ce6. 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/JPR562300247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09efd0f914c5828350020256b687231f47b7447190001621df3fde70bbbc0fa4. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/JPR562300246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91fd42505e129e722fe4ffc863d7ee43cff471ec467e76fbb254819801c5dba8. 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/JPR562300236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa90e379e5cbb1abaca478cbb8b6e53134244ab60eb137be7bc018ddd738c672c. 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/JPR562300237.
女神は世界をダンスホールに変えやがる (feat. 夢ノ結唱 POPY&夢ノ結唱 ROSE)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9ee4d9896a106d3e6a4f41ebe5f210ebd4c6f78a48f562e096348d1309aebf3. 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/JP92Q2401176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e5fac0430b60d90b76e0b77254db6f0a000358e521489d1e4e4e833c68f271. 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/JPR562300223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e8489dc3c8063ef1978a560706ea45b9a100da0bf249adfed32937b11a694d. 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/JPR562300232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7435f04115d0193d9e57e16220a593d08cbb72ba2565eeff67c6fb7df493d76d. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/JPR562200498.