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 0x88aeed4c1b3c5554dd5d0ff8b2ee004d7c2bebe0c3cc58f641085c63cd2713a6. 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/f5c2dfb0-6334-4e39-b3ec-f57d7bcb5243.json and https://artists.proofprofile.net/proofs/artist/f5c2dfb0-6334-4e39-b3ec-f57d7bcb5243.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
THE IDOLM@STER SideM ST@RTING LINE-11 Altessimo
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 0xc9caada619bc681e22315ec1eac4aa72a81b8841b60b1ea52049757b2644b388. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/JPI102000573.
THE IDOLM@STER SideM NEW STAGE EPISODE：07 Altessimo
THE IDOLM@STER SideM NEW STAGE EPISODE: 07 Altessimo
THE IDOLM@STER SideM GROWING SIGN@L 08 Altessimo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f368ac8d263fadfb8f538c81493c398ce6dd65c4d6e3a3536594e205a22428. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:24:14Z), 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/JPI102200540.
THE IDOLM@STER SideM 49 ELEMENTS -07 Altessimo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff3f913dafb93cca51f13d7a4ad32faba2152fababad9e7b735ce1702acd07e. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/JPI102202990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a5fb5e92bae708472fed5d0c9333741a07883ef62400bb4cd0f99963e6a8f2. 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/JPI102202991.
THE IDOLM@STER SideM F@NTASTIC COMBINATION～CONNECTIME!!!!～ -共鳴和音- 彩
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7afcc40cda4e011a82ac474abd15d060bd18391a8b85c1a8c1dd1c8b215bd7e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPI102400157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d0f9c709ad8d82e85f970038405f63490bcec41f9f7956757449dc91445321a. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/JPI102400158.
THE IDOLM@STER SideM F@NTASTIC COMBINATION: CONNECTIME!!!! -Kyomei Waon- Sai
THE IDOLM@STER SideM F@NTASTIC COMBINATION: CONNECTIME!!!! -Kyomei Waon- Altessimo
THE IDOLM@STER SideM F@NTASTIC COMBINATION～CONNECTIME!!!!～ -共鳴和音- Altessimo
和風堂々！～WAnderful NIPPON!～ - Altessimo Ver.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4510e9784377602c9d97cf86a5a2cf52886e7c8fec9d9da2ad21f338f16e174d. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/JPI102400153.
NEXT STAGE！ - Short Size CONNECTIME!!!! Ver.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5604f8bee72a59f61aede6889892b36d3dc8d71d78c297c77e4e7b055b82e370. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T10:00:27Z), 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/JPI102400155.
THE IDOLM@STER SideM CIRCLE OF DELIGHT 14 Altessimo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bfb7d1c80176fbbcfb1d226a6fb37ca4ef291ea511b306a6ba2aab5ca3c41d5. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:33:59Z), 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/JPI102401488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e25e96ea37f554a196a6c89b5bbc7d8d6ca004981b2ca7e8c3e8236b8b9ba53. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:08:26Z), 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/JPI102401490.
THE IDOLM@STER SideM 10th ANNIVERSARY P@SSION 03 Altessimo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9775177ee46fcf1d526f7ee848de36012f6971c26e8752276f1075c71f4bc57b. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPI102000868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc0ca5ff989df2883150a521770cdb0bfa2075aa020c9b89346e6f763595af0e. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/JPI102000867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b102d25c6488839eb448a640404dfcdfd4cfefd1fa61eb6ef95f48671caafd. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/JPI101601402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebc172eff1254b9ec4829efb0fdc1760d30613ee8bbcab713c8db4528f621e83. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/JPI101703025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7aaa7b89005e5b8e6e8bf31f7542b3a0fe1a33132d691f45f308461f8c457c3. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/JPI102000570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e297effe1df95498f3c15c405e4fb9164f1ba47e443accdcbacac2d374901c. 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/JPI102002024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1eb5f2f895445f32d52104e35c5d6840944aeb9a3a4afac17ad534cee0af277. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/JPI102200911.