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 0xcc14d741612ef2c407c7a20549d88d2631d8f65d17680bdd90ba5437fa514a0e. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4231a7f2-7c82-4723-a151-190ec2d237e8.json and https://artists.proofprofile.net/proofs/artist/4231a7f2-7c82-4723-a151-190ec2d237e8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
はじめてのSEASON(TVアニメ「はじめてのギャル」OPテーマ) [TVSize]
この世界に魔法なんてないよ/はじめてのSEASON
この世界に魔法なんてないよ/はじめてのSEASON(TVアニメ「はじめてのギャル」OPテーマ)
I WANT TO GROW / KI・SHO・TEN・KETSU・JO・HA・KYU
I WANT TO GROW / 起・承・転・結・序・破・急(TVアニメ「俺が好きなのは妹だけど妹じゃない」EDテーマ)
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 0x67ec52b395b96c52a6dc26d974cf955a217b005bafeb32cd5ce21bea4fd0444a. 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/JPK631705302.
TVアニメ「痛いのは嫌なので防御力に極振りしたいと思います」
TVアニメ「痛いのは嫌なので防御力に極振りしたいと思います。」OP&ED
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f3312d8dd7cb04ed742e7d861fc772693e0ef430f428a592f7837dab889c6d6. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/JPK632001001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ecdd9088dcb931b8b1a777971919d3e54fa1b376f7614ed631683a074d3cf63. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/JPK632001002.
Tvアニメ「痛いのは嫌なので防御力に極振りしたいと思います。2」op&Ed
TVアニメ「痛いのは嫌なので防御力に極振りしたいと思います。2」OP&ED
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe79599487c033598f94a5a71e7459180e32c419d4d85d53e53d13505ed28c39e. 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/JPK632300601.
TV Animation”I Don’t Want to Get Hurt, so I’ll Max Out My Defense.2”theme song
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe79599487c033598f94a5a71e7459180e32c419d4d85d53e53d13505ed28c39e. 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/JPK632300601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56396ad29b4ca882e1654f126ae8b3dd050e862329641691ef0a757cb7ac2433. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/JPK632300602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f31bdf54e7c32ea6b2c60afe0237f19bd0fd654ebb4494c47cda3f1f863ca0. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JPK632301201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e03704e357770a3ecceb379cb617e9baa250beaaefa6a12742f3aff9e495ada. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/JPK632303401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289818f297e36873cba24843e1f362444365ec773e70536fc07f04e5e19b0c11. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T12:32:15Z), 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/JPZ742500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd2e38fc5470ef420ca53228ab548621523305bf429453ccf46e1d235a98253d. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/JPZ742500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84494d220b1fa0cd661c153b5d31e543e1f670cb5ea03c14a492b2bdd7a7042b. 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/JPZ742500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ce57143b13391a693a9a4e0178eb621fc328afb7a045a2117c305b35e5b4ce. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/JPZ742500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ac94e699f5f35368b9ec05a217d54c087a5f785ce1cba4cf802c185dc73f73. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/JPZ742500501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bcdcd5a9f234564761385ca5ea6cd25040e5ca7ea74e25accedaea9048e951b. 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/JPZ742500003.