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 0xb3807280f3e921178d9423ee28d48d74d79c985aa1ff29bd90421a59b3fadb91. Chain 2 (Bitcoin): anchored in block 954615 (2026-06-20T22:44:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c5a1fba8-0515-4f7f-8f48-6128e5323b99.json and https://artists.proofprofile.net/proofs/artist/c5a1fba8-0515-4f7f-8f48-6128e5323b99.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
「マギアレコード 魔法少女まどか☆マギカ外伝」 Music Collection 2
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 0xbbd4a060d2abb40051760d274baf1c30f975997658866df73bdf91681caf3439. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPU901902060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18cce1c774d2e0c9bf88b71ceb5561668f4ba9ea2a2df798c13c97053c63dba2. 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/JPU901902663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa564cd1e62552cccaf76217185c2ed92b5f9c978feb7396c22040deda8e8c02a. 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/JPE302000331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28cc4e09d1740e36f9a61b8a2d9ddfa7f6b7e572a509efc608776289aa0406a. 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/JPE302100998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78035ce8599e6c73317728f63a23c6c07b95494f77a21f2ea72b1ee9af943f87. 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/JPE302101029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x526714f65e94a71459ccc9291e8bb510214973540a78529a7929ef2c99545a59. 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/JPE302100999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x121b98c747f903db18fedcf718b5ab883b8b5d0d8e0ce868eacfbedd4521462e. 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/JPE302101000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a3a0bf2b2df78cd7377b0fdb06a15bfe31c80b85e41b8490993b1959c6948f. 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/JPE302101031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaddc2a1eb2b887dd6c540f242add253af10444f05a79b31220c1756dfe3fce71. 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/JPE302101001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe729a4160d11151541b83fbbd8a20c1519112fb6cd15e1e802e4a63a7fb2e2d. Chain 2 (Bitcoin): anchored in block 957012 (2026-07-07T08:27:05Z), 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/JPE302101032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8359f29a093ab27cab2acf20526ed3399d354832a40bde5554aff0917e8102d1. 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/JPE302101002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81de7a5a9e559e4321a96809165204be77fd1843b40a0e2068d7bb5bd4323197. 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/JPE302101004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe915c3606f343c40a8e804a1deb1cbd745760bb5fc56023dd7f3b3b1656aab4. 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/JPE302101035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b0f03a3f19a465fe645c3a62b1df5e794e4833f4c1c527c7a1cf364375eaf0f. 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/JPE302101005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f49bf50eb07b12194e981159e8b8f38d10bedc57b852d67406548721d863ad1. 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/JPE302101036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89b38a7be69fa66500fb3a8a042c4dc1da3950d72c0e7d68280eeec1c5f0ba4c. 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/JPE302101038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd82a368925c9b3a9366cdf6280dea6f34c09ce369a24b7687f6a33acd36b6a2. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/JPE302101008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9a07e468f440d3044c840c1daf6d7c113662319ddc903c7af3a989a86da6e4e. 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/JPE302101039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6adbcb2aaec3bb4510af69fc95555e31e7a65af719801a1d8b7e6921706a1d8. 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/JPE302101010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e3c18ceb277acb2a901df9733e11a9530200763fb05b0d5be6fa5a520eb778d. 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/JPE302101011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4edd32f11e01c24b4a76ea591069f3184be545f1c649ee5d8efb553b22ef8ba4. 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/JPE302101043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82aaa34d10f588ae241f6384bec8d2a9eccb78882f43b1043dd0f59384cc9fb1. 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/JPE302101014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb647583a815211c5bf8254a9801502283148112f25fabcdd46885283ef3d6d11. 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/JPE302101015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x483b96a6e34c96710bcc33f7ba58da1c437c0a63f9b090e80ee10d6ea8deb55a. 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/JPE302101016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefb7b25eaa6fb2bca9cd6d9d7ec2186e7e932d17e9dae613826b84088963d1e9. 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/JPE302101017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49eb77db90c29f433931159b90b926443224f77c003c18774b8437675504cc23. 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/JPE302101018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d1c6457c3c9dfe6461303412d2bd9a6a92653bba8181a0e6bc1a47135caa18. 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/JPE302101024.