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 0x7724de9802ee880f46ecad74733ca5af5691c26b2d31b978e94e6af89286daa1. 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/b7f576bc-bc2c-4b28-90ac-7b32a961726f.json and https://artists.proofprofile.net/proofs/artist/b7f576bc-bc2c-4b28-90ac-7b32a961726f.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 0x38c0d27fd633a2d5d37be028bb6df6d1d3e5b307134437e491827a8824abfc6b. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/JPZ921202679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ce79992e33b87f71c94fdb3bb3d753913cc6280667b2bf6dcd945113ba3077. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPZ921202681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bdc862c1750d2ba219d19806395ad2fc7b68d6fc384721f1081d70f684215fe. 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/JPZ921202682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeec055df1718c052625d0c35e08391c0cf998055173d3c2d620af9e60dd881d0. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/JPZ921202684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f84429e8dc02e05012ffa22379daaf8b6258833b235b5239a952735168805f6. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/JPZ921202685.
Art and Air 〜空と飛行機をめぐる、芸術と科学の物語 オリジナルサウンドトラック
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba64787652584d0140c52afb87f65a03848ee020c860c552260181258733b08e. 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/JPZ921313836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f0f4f1f6fc05cb98577b8e6a40ac33143f583792e740621053015d24975df6. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/JPPO01410761.
TVアニメーション「アルテ」オリジナルサウンドトラック
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x952852247eca33961534c97c2f6b18f9421051f3bfb60ff15cf6e9d10c9f21b5. 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/JPB292151001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80133b7c50094a2ef932b5cc08bbc2299275aaf18943a86fb1e2263e4f666fcf. 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/JPPO02501485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca266d97b7581d44de7cc1a9e0ffc4d4324df2606fc1c7a79baced0e5476a00. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:09:50Z), 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/JPPO02501484.
TREE, FORESTS tribute to RYUICHI SAKAMOTO
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca266d97b7581d44de7cc1a9e0ffc4d4324df2606fc1c7a79baced0e5476a00. 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/JPPO02501484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80133b7c50094a2ef932b5cc08bbc2299275aaf18943a86fb1e2263e4f666fcf. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/JPPO02501485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x776838b1bc387b129e0a4398e21417452178c0aab63fe171c8ee7db063224689. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/JPPO02501486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x000311655fc31591ecdf876abe5207bd4c78354e32f672e7917a1b1bda451f3d. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/JPPO02501487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x661f46327ce08d98f38ed3f7b4b5c670659fe7e02c1095c8495241adec675394. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/JPPO02501489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7faf97038d1ace6f24d53a39efffc307dc8b0bcca8ec0d150d700e35f024156. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:11:56Z), 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/JPPO02501490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x372f3f200876cb336a1d442b4d730b600bf9272c8595bae04c07cab429223947. 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/JPPO02501491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf15146cc6ddaf002b750e4b58787c4977d8337e94ecaaf75277547a2aedca0d4. 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/JPPO02501492.