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 0xfa37fa1e2c14caf97e7d96e30d67dc9e64e27e938b754580e78a2e09121fea4f. Chain 2 (Bitcoin): anchored in block 953819 (2026-06-15T18:31:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fc1b6970-0a23-4742-a287-c366724779ff.json and https://artists.proofprofile.net/proofs/artist/fc1b6970-0a23-4742-a287-c366724779ff.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 0x5fef3271642d57e0a3d838876164381e1184d66200c80faf265567614ca1a95a. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/TCJPJ1967714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3915fbd73510c6de69a0375b639886048ce31db4e67a9c41918151ab95d84f26. Chain 2 (Bitcoin): anchored in block 958399 (2026-07-17T10:39:51Z), 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/TCJPJ1967727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3264f431c5d5b8fc2d4577658187d90fe6db52ecb3cf42b7f317796eb5785b92. Chain 2 (Bitcoin): anchored in block 958647 (2026-07-19T02:36:14Z), 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/TCJPJ1967329.
東京キネマ倶楽部公演 2018.6.29 LIVE 〜サウルスティラノが歩いた日〜
大人になるってわるくない 〜わだすのジブリ〜
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3321d2247b28fa318243f4b5bace92fb8252383c6c8c2368f2a329b4c72e9356. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:29:11Z), 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/JPPO02002958.
ヤナト田植唄・巫 ―かみなぎ―（天穂のサクナヒメ主題歌）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x013548b8026cd51bf6cd691bededf97a2a566150ba2a999175920bbeadea04d0. 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/TCJPN2021924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e5155c2afa9490bc9a9af2de397cb0b3b384803c6cbdb423be40d53a0352d5b. 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/JPPO02403068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x760972828413401ba26cf56d31bacc22d0c4099149f07218dbee5ac71182ba6b. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:03:16Z), 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/JPZ921409583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e89ac9cd6b05c8ec9da9c5324a500a77363b6b75d1c33608b4359683a1a65f5. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:17:38Z), 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/JPZ921409580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19b65c0f3d69f5ca8ba39c5545ed2e22e6f45e4f2aea2dd257f866efb0394bec. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T07:21:40Z), 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/JPPO02403070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dee24ed61d707a51839df03414ed189854f7b13639b16e90cadf5c241e21622. 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/JPPO02403071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x912ecdf4f6233362fa2e3756d79fe893ab1e44df0ecde931cc0c2a263d12c7ac. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T10:54:48Z), 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/JPPO02501761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fff0347f883a07bf9c74740d1d47ba55a2d6c3cca29637c5619e754237f5357. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/JPPO02502441.