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 0x3f8b9eb6cade57ae52c13c6e1d125d06c99ee83cc2749a6578f066acac5652d5. 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/a0fbf387-9c34-456d-93ec-21abd51d5b22.json and https://artists.proofprofile.net/proofs/artist/a0fbf387-9c34-456d-93ec-21abd51d5b22.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mayonaka No Kotoba Wa Aoi Doku Ni Nari Niburu Sekai Ni Hiyari To Sasaru
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 0x6ea6468cf22e487494eddbb8d7e9607a33c0e2232ee9562dbabe76a9c4dcac7d. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:34:19Z), 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/JPN301300817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7182418faccf0db168dfb5730bf54ec2ad79da2b8e224a599989faf89bd2e2f. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:42:14Z), 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/JPJ901301470.
そんなことどうだっていい、この歌を君が好きだと言ってくれたら。
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ee8217050b94acaeb6e27826faafd4b371a858e7a3447ddc932bc421971199. 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/JPU901402515.
ハルカトミユキフリーライブ'ひとり×3000'(2015.10.03 at東京日比谷野外大音楽堂)
ワールドワイドウエブは死んでる
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b0621790f92668a2ce72d2287b4d07e66472d1b54fa9571405ab306d979aa6. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:36:19Z), 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/JPU901601663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde1427229d278ff6d6b3e0828b061dd577798fef13ab715ccf7341012b0e1c3. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:01:06Z), 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/JPU901703171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49b5746fc6037490ecd7b8b449cb86a598575ac1b869f0d33e0c1f81080cdfcb. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/JPU901802636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff740b4a2360b34fcc5362f1dc5e4bc1213e762b1b20a116bdc7531194ba9f7. 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/JPU901803086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff740b4a2360b34fcc5362f1dc5e4bc1213e762b1b20a116bdc7531194ba9f7. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/JPU901803086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d63651837c3950ad390d750ffc3af84f2583d9b26e075e45b9a62f552ee9d74. 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/JPJ901301480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c22a65df957066b52d0467681f047cbbf4a43e4bed9d2568b78de1109655f3f. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCJPJ2502192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6217cc85d4523fe2d66adac6a0297df08356613e209dd00b91158617e7ac4ad. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QT66K2505402.