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 0x6d7426ec5b07ca7494636b77854f83d9fb53dd51b31e8090bfdb07a0ce734251. 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/1e107f98-b52d-440d-83bf-9ca9474ffa53.json and https://artists.proofprofile.net/proofs/artist/1e107f98-b52d-440d-83bf-9ca9474ffa53.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 0xe47107e7a27a81ead10e099276bf7c1a39cd29b0c0dd9d4ddf8a8039cf800942. 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/JPZ921902341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7913b4327b035de0e04d4a34300c1d5766479725d03f3a8c2cef27fc449a6332. 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/JPZ921902342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b6af73d8a0a6bef4e11c982300e4557e9a25700bf8f931c763c9586b543e41. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/JPZ921806951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5833cf46336bcaf480d6198134a5e972cdd313817b0ff17e2ed68c845c4c6314. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:38:23Z), 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/JPZ921806954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f6f325394d33bdf4d81b9cc353a60413e847ddad168bca2ea93125d1dea56b. 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/JPZ921806957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf25da271f3482c61034684470652e84f35d8d96367f35d725ff19f867d907f. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/JPZ922109196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb029765de988cd93e62aa838ea699420ef42bd2557ae5f809002f7b2b114ce9. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/JPZ922109197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d3ef7c0582e10680f2212471265ddc31cefe5608daa70328fb73b3a33ef4e1d. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/JPZ922109198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43fc005e77c4f18451d5703d09de257779a645bc54da3b85877e8e452da8cd0c. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/JPZ922109199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea432c56cc46e276b7d6fe4f219fdad6d4e726c3fa21f3b9c47102bba85e83a. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JPZ922109200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc051daf6a9f2d3a4d337c0312c5ae7839347ac3212d579bbb81e3d57b167a8. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/JPZ922109201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77d5bfbdbec0d29057fe6cd471e77eb82f7f4080d54a8e67e8ba357b5c7555b1. 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/JPZ922109203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc9793dddfddf8058fdc16da97668ef99ffdee7622e89c6c93c9a05d5e2b0d4d. 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/JPZ922109204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb51f0a0754039e6fbb4194b70bcf2453a6c9bdb08e74716402267f2241da1d. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:07:16Z), 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/JPZ922104033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f11e1b05434fc3c5b00fd444a048a7227f96599f6967253620eff4c8b63a56e. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:06:29Z), 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/JPZ922109206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81af8fec6adb4c2a83b2eeb4052ead912e4be9bb1231be49b832a2676fe5e54c. 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/JPZ922109207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1664434f8039b98146a562fc833d606f5efb6d19b190d900ac495cc67fe2423b. 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/JPZ922109701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9ee2ef8b373e7e2fc4466c322e0ae21c0b265e3568701c1b9dfe3d5441e0a4. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/JPZ922113300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c5bb8bc1b6645c7ca78701ab38aaf12c8dd69dbba885d99802f581b313c898. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:00:43Z), 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/JPZ922113302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x408ff30eb2ca09c7d7615dd30f85c55eda8a9af73fdf0289a9badc74ab0ffbcd. 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/JPZ922113301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9920582d1db0e607e6ab3c54f69a8c31ac3142c2ff284bcb2b5d5c2cd8e77645. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/JPZ922204533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d1fd8aa7277ff22188bd311ea50107514cfc07e94970c4614acab925c489535. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/JPZ922208407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc63cd8a3b9d91eb705d91febe80b18c3756eed2951bfc94e6677bfa31463a55c. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/JPZ922208408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c6c5b08bdc53597b5c3bf31963ab962d61cd1d6669d03f880da828e12af94ad. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/JPZ922301795.
Ningen × Shikkaku (-「劇場版 Collar×Malice -deep cover-」 EDIT ver.)
Nemuranai Machi (-「劇場版 Collar×Malice -deep cover-」 EDIT ver.)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4dd3539c5f36b8553fc437a3ef80348ef893ed268fc86f0b42034f279225572. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/JPZ922311209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf8fa56abaac7683b189ca3f8132af61146fd32ff19811c1c303eecefb189a79. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/JPZ922311210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82314cbe782fe88ff5214f5268475583455efdbe2af00dfdd8213ad1a0cbba0b. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:38:31Z), 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/JPZ922311211.