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 0x5b0468a8074a986d4d444703234c0b8e7436a99842d37e186d3d19bba6447881. 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/041efd43-fcb2-4708-a5ba-bcebebeebc57.json and https://artists.proofprofile.net/proofs/artist/041efd43-fcb2-4708-a5ba-bcebebeebc57.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
THE IDOLM@STER SideM ST@RTING LINE-12 THE 虎牙道
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 0x3d3e29b7f0d1c373a41e57d290870ab3d17fe55fa00643c2cc4f975339cbfaa3. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/JPI101601409.
THE IDOLM@STER SideM NEW STAGE EPISODE：02 THE 虎牙道
THE IDOLM@STER SideM GROWING SIGN@L 09 THE 虎牙道
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1842b4805131812528ae43bdb0e3cfc645609369e025b2f8dd931332f3fa819. 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/JPI102200539.
THE IDOLM@STER SideM 49 ELEMENTS -06 THE 虎牙道
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe28842220558c8b32729fc70d0e49f28833eadf3217877946e72ab598214ac29. 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/JPI102202609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f3692ad577d368546b63213457e8d101267d98a7b87daca65ad759c79f1b7f1. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/JPI102202610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddfdc34fcb972dc000c07ba81b08bb50bb58fd03f7b26d9326221b3d889a49df. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/JPI102202611.
THE IDOLM@STER SideM CIRCLE OF DELIGHT 08 THE 虎牙道
THE IDOLM@STER SideM 10th ANNIVERSARY P@SSION 13 THE 虎牙道
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6002b6608a9caaeaa5477b98e816df93e0c51ab74a165fe021d72c9c9536a9d. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:19:49Z), 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/JPI101601405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57075a1779e7842bef18fde6847c08d5aa1fc19669be3d625729c45a4423c695. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/JPI102000883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9e378f7d49eb211206991bf0077149665d00dbc166e4905bb1bf914e8822181. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/JPI102000885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd353b5b87a7b1d1cb8aace8c4c08bfe2e1c6c0c0d692610f0dbb65bda0b638f9. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/JPI101601407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x540979281bd570c7da9345f3546b6416e8ebf343a92d98e08a6f87b5feb9b2e2. 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/JPI102000884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f1507593278967fe856e0d4671d6223be9b1bad22784ce50ea70a24bb9bccd. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/JPI101800781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x533e3f55a5d9dfd5649a5b47fd8790cf981efcd2483bb5a88b935f95a0490e50. 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/JPI102000796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ce4c005e779ae1d25d78eb28656fbd875612b0369ec8c1f3153e7663f6931f9. 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/JPI102001361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1842b4805131812528ae43bdb0e3cfc645609369e025b2f8dd931332f3fa819. 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/JPI102200539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04139bd7a15d8e1e15c85bb56ffc9af1206a2b5a0016c10a439af0a5def0b358. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/JPI102201128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe165dab6069dae4a9eadfd015cfd77a0aa35cc8ef343c2dbdd92b01cf8f49652. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/JPI102400560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca37eb38904eda0f7eb90d34a670ed839e628d6f301d80d007f0336a54c35aaf. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/JPI102400562.