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 0x9b7e8f0dc76cfa6c840030699dfc352c68fc77dc92be7d4f23b7c9ff5f1bd07f. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a7008d33-7a96-4430-9c4c-cfbc5b5eec14.json and https://artists.proofprofile.net/proofs/artist/a7008d33-7a96-4430-9c4c-cfbc5b5eec14.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
TV Animation ”Summer Time Rendering” Original Soundtrack
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 0x06036e9f32ae34c7c52414e31ecbd56aa4702b01ebb1a9518c82c0c77a97e3d1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPK632203101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2203edb3733d02092ecb7a539eb3db81d3c442682a3bd931446686b6739d25a3. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPK632203131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x970038cedfe8f097fe275285cd88372786fce9ddaeec81b5f77ecad69f0af0db. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPK632203102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738de767a418c752de93659044bc773b1b644c06a5015dc88b366240e71d552f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPK632203103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb55f7cc9656f08b9c26099d7ffdd8d03d2f2a3d27d9ea270994f62212719cc5. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPK632203134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67ad002e154893b07fe8bda6e180e62cd23da838350e364baa72bd983a32b31. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPK632203106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x796022d7103a52d5e8f66cff2435d71129b365c86577bc32c0d3967a2822e25a. 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/JPK632203108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22f8a7ef1fbe502e6b05667ee8e51caa2960fab77b7da7390410052afb6a6699. 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/JPK632203138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e72c509991299ee807478a053cc6417e485000cfb2d49bf7507496ca30a314. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPK632203109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5ff918da7d097ad1af04adead174183dcc0b612422b1a599e6fe2025bdc2e9f. 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/JPK632203140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e8db2164a7487db0125225def3f4989bc732be0a7b98da562a624c01df07611. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPK632203111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c9d847a996c766bd8c8187671055e36511b43503828ecb398118223c66eb23. 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/JPK632203141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc3a234847cfac036a89a7a949039a7889584024ca2164b49583745f3743d850. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPK632203112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdebf9d0df7aa3bfa682036e5e190c588f22ed11d348d695909a46737c6987577. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPK632203143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ddc1a4d8c1958f18e93a57841406ddeaf1a4089b8c62ba9a1f4ff67b05c1dbf. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-21T23:17:17Z), 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/JPK632203144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9551c04f45df0fd872ceafb917d744bb46736954c28d41a1c6dff9eb1d2e225. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPK632203116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f4e621c1fef9709c883e59f7917f03ab9b4c825cac980cb34d46aca9330a9ce. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPK632203147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7230c0c62e584bf854c82451ddb4f7f1651a78347c739fc1c7c49e07ea707b58. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPK632203118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6cdc57b4b4eec9e236af664bf592d690759ba927b541a012460b28fbb4f4a1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPK632203119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98340ade9fc0334c91621fbbe487b29750a9d95cf33285afbdafca179b301fe7. 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/JPK632203122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bb179cae6828227d5179c0054f10773d0d577e6c360f31a47c77560c0232281. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/JPK632203123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5396f74c8c139a83feea7ec6ca2f5fb90aebe8b2c8420c1e726f1f856f54fc84. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPK632203124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0599e100e14a5185bb04d36c2343f3334836a860e1545442f07a7be65f29a203. 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/JPK632203125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb00404b68b123c37de3f36fa1805c613b390d1f9e9bb62013498b6f061c9e3e3. 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/JPK632203128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c29f4984d674c49185e945b790319e67985ca2ad7084aac5429651744fae9b3. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPK632203129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbefe1ba04e9a28d5957d6913f2c3fd646559f28925a7c5771af988077e223c52. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPK632203130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f68ec2515675e5039fb326e2f1fcc458ecd4889f2c7aae51e6f25dc3da865f. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:54:38Z), 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/JPK632203104.
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 0x20d6dd43498a210d3bdfbe0cc09f0d7f96d6656a9cd4df6b5c9d9175cc5e3bdb. 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/JPK632203107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4d984be5f73e971fc3afcf546a2508a3b36a5bcda8ff0a24e01d5a5d31c89a7. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/JPK632203142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x945e99bfa23fd959994351faad1aaaca6adbaf99ed43b152ef66881ac294f2e3. 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/JPK632203114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe2768ac19073e37d0e29c2f8512e765f5e4c9a8e6512661c806bfd6d4f098f. 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/JPK632203145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7784265cc35cecf3e833ce42d767e6dd3b5e6d104764e75cb0452d5e5faffbd7. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/JPK632203146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcce61168775e09bccb87a0be03805f9d58aa07153aa63998a2f58128445f91ee. Chain 2 (Bitcoin): anchored in block 960165 (2026-07-29T23:29:40Z), 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/JPK632203148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadb725bac23c07a606fff4776722b915d38e71d8c74c34116a06a0d33f9ee891. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/JPK632203150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7988901c9e62a0e0cedfb6a97c57b1ff08ebd15fc4eebc07e0a2c4bc6d31985. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/JPK632203121.
涼宮ハルヒの完奏〜コンプリートサウンドトラック〜
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e4f6798a64d0dc266e9bbb29b8597669f6647c03aa0efcac62f2057e951b9e3. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPI100601280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a9a6cde67cef9e169684819d5e63edab1deca2f6d90c29a636ece277afe2f83. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPA841700093.