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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67984e5d65f0c55d9f579a2e7d5239181bf1eafa5aeffe645cbc3e339d17aa4f. 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/61e66a35-2883-4095-8136-c5b9e9b9fd95.json and https://artists.proofprofile.net/proofs/artist/61e66a35-2883-4095-8136-c5b9e9b9fd95.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
新海誠作品イメージアルバム プロミス
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2efd5c33340d3607ef092286d05d0d25fb2bde00a0b4e6e69f1a47a5f989ad3f. 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/TCADM1814219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc43dbba9c576449504e62544a6c119eeb487d1780cd44b8caca013ca5c4fc95b. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/JPX832005986.
Till Fate Writes My Epitaph -SIEGFRIED’S theme
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe6854af7c858a7cb9a27c002946d6f76c434ea200ee78e58c7ccdc55fc546c5. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/JPX832005987.
Sleepless: An Untamed Beast -Z.W.E.I.'S theme
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14311cd247903cc5dfb3104cde5c0b4e7991dda0003dbe2b51cb6ad195b09a99. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/JPX832005988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x499d635de4bf413b5bea635f8917fcee08d3f05aa14ea40ea4c50c7902f6bfec. Chain 2 (Bitcoin): anchored in block 957025 (2026-07-07T10:59:31Z), 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/JPX832005989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59ddb354c2e963593aab0081ef9a8d3528724d742922a988c99719183784d2fc. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/JPX832005990.
Tread Ye the Path of Bravery -YOSHIMITSU’S theme
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2a36807ec449f0770ebcdf8fec4bf6499094bb91c0b53092c168455eba15f45. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPX832005991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ea32a29c55181bd3350fc8fc4cdf29c3fb999884974abb5db76ab702cce087a. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/JPX832005992.
Faster Than a Howling Wind -NATSU’S theme
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d1508cd5453fa2e48ff1b7569478e6b53e6142ea46009c15f0a9d3e96da6c9. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/JPX832005993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd190f577fc13b6ba313903e82ad30c6113cd3db07198b4b95a5312de2e02868. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/JPX832005994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c4b8f91c6eef0fcd2abdf27b355a04d75fc66be63e95de20542afd1e8995b2e. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/JPX832005995.
Without the Blessing of Fate -IVY’S theme
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70614178dcfff42b06942843c2cd483d3ccdf04ce810d95ecd8d121231bbc62f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPX832005996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc11c15c6f1f61b0cf9f2ce904771154278ee4b8a6ffb8519e41c3dced9065dea. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPX832005997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d7a5ad0520e97e5911c2dfe216abc25cb8bedf6c90876d6a1b99bc7875f2e2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPX832005998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34394456987c172a9aee969c04cd1eaa6a9603c342ead8c0fdba0592669e68bd. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/JPX832005999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x129583953cd70fcc8e86b3d4ca7c99c98fb54d5bdd3fe62e2a479655668eadbf. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/JPX832006000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc039b2d0eb91b917df510ffb501609ceb77f76f6bfa905d6b41c8b35a3f5c145. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPX832006001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ebf18066c506ca9c77eb327fff177700d67aae6e0ac96b487b6882fc544c58. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPX832006002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53ce9702945d492d5699d46149e14edd7606a2b692b5f92eaeb3133ac4d8dbdb. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/JPX832006003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x438c898424a92b7ce1dfd990f3fa37a49ed45017ba9246e9488e9e3ff7e1dffd. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/JPX832006004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf88215fdc3268c2ad971560592f11df85deb1adcf70f44de3fd255eeda7ec3aa. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPX832006005.
Samsara: The Wheel of Eternity -KILL'S theme
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd45030a946433d0867daa1aa1b0b7529aa1140079234e1284df0ddb85bd12393. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPX832006006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa44290d980356a6d1253c78d3b7a336cef4c591f2dffaec3885b2fdfc8edce09. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/JPX832006007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c6763400bf6ae560df0b4c4b819033111c30993bc601021cf37372f6fac4801. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/JPX832006008.
Through the Jaws of Death -STORY BATTLE theme
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d37e29daf318feb0337ecef82c4e73ee49db1f062eede9bf9a26224981d1fc0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPX832006009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c74304be03dfc1e3149ae6a3fe95692b23a493cf10d36e1e912b698eb52719. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/JPX832006010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89469e17ead6cbede3b071c12a884f17496a120240a86077f4c918ebb173d918. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/JPX832006011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbecd3e7ce58edb9c11ce7548e1d397176b4a2c155850bbb7cc85f77f196b3842. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/JPX832006012.
Dance of the Oracle -VIOLA'S theme - Quick Battle Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82dfbcadc753352c2396831d148952fd38e730c2973438954b5edd4541375b02. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPX832006013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c0d657d4d62f4a524a2f5e83c2f8019904fe0fc7d954023195b220dcc7e2b20. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPX832006014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cedbf3892bf613582e2e2a67d32f3386a50d33738a5d65995c6aaeb26516bee. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JPX832006015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa25e9035e2d7c2b97660a8427214698587f8411b87a4bf5d6e724b254f9834f7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPX832006016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35fdee5dfb4d539817c6040374997cc81ef6d0513ced7a3c72a9f663f2a957a6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPX832006017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb357683d97ca357351d1d690684fb61a566775a41c99efb81d112e6237dabf83. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/JPX832006018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb2386af574d3e7057aad415dd1a6ba7519a0ca6c02cf650b354977afcd1e7e9. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/JPX832006020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39eaa0352786bc093b91f186e2fc3abb1e838b22a11b22de668f303adf5196a2. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/JPX832006021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd5d351087e15764fd3c71f19cb0a2af909505a6325fd5f7578933d42b263783. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/JPX832006023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44956ce5e1d338d125d8d1587589fd45a2e6d38405d52157e8d7430157aa372c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPX832006024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b45819d9caba1503b5baeed315f124c87b05b240c021ef7decd41a4d686c8ce. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/JPX832006029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60d4e96ed761acb45fcc3ce491f053ee077b568853a8b1b195000f28cac48894. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPX832006032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f54abd5f31426c98136e71f9ca15ad67240fe225bbeb1994c8973c539967d5. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/JPX832006033.