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 0xb032c4f60d7d8aa5d2ebe0e97e82a81d632f2d025bcd54e78824cde1dbdbf0fd. 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/0ee257aa-d72d-466d-9856-ba29da38c602.json and https://artists.proofprofile.net/proofs/artist/0ee257aa-d72d-466d-9856-ba29da38c602.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bad Apple!! feat.nomico (TOS Remix) feat. 抹, ｙｔｒ
10th Anniversary Bad Apple!! feat.nomico PHASE3
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 0xaf479753b7d0fa9ae3a7f105f92cfe1b0f89ff6fe7aba110809322a07284f608. 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/JPW561805004.
Paranoia（TOS Remix）(feat. 魂音泉 / 空音 feat. ｙｔｒ, 抹)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5b70c85861af6c64e73108a3bdf9b40f785bffee3e24f28af2e0fa73bc943c0. 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/JPW561907114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe683af25ebd809a1d50b247f07f59c81479b4c187efdff8f9e66624b15f4e6a9. 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/JPW561907635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1499657f00c78bd02d1d03c3e05fd5ea6f89bed900a93777df5028c2970100be. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/JPW562102524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c994451f90c07fdd5b246c661211ffd783958033168fed56d7eb5a6af3436dd. 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/JPW561907632.
酔いどれマイクリレー (feat. 雨天決行| 抹| らっぷびと| ｙｔｒ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4acbbd3ad2503d3f6b401c5567b120ea49b27f3e587cc0556d474a770501cb2. 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/JPW562103224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1af14807fc6e883cb18ff7f578a04f70841cdc5cdbbb0d8f0f2638481fc7dc12. 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/JPW561805036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaab3336cf9455ca18bc29b0716e259b7bffa7282d4c16cecc1524a683588409. 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/JPW561802272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e9db985b8fabb123317a1afd26a09c986b02b16337c0b04f794c1a69a011408. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/JPW561802211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c34b924c5633378c0e18d8f8755cb609e85438d49c9865d0fd7e12caf0d969. 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/JPW562106097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3735b4fb192a0d6b2996ec94c8e3fadac20f81e6aa40da954ec0acb1deb6b9e4. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/JPW562106098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07657a70f3eea6f013e5acdb29ed46c00f868325cd0381871ab8497fd99c1965. 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/JPW562106101.
きっと最低で最高な夜へ (feat. 抹, ｙｔｒ, らっぷびと)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf56f5d99f7fd80e8970494a765d0c63fc4658d7bc7cdcab05f4a968b2a533503. 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/JPW562106102.
Help me, ERINNNNNN!! (TOS Remix) feat. ｙｔｒ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea0a490b67ba0641f7caa21f3348482529930f1b1a65a2fbe1d6aa40ee9da8b. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/JPW562106103.
色は匂えど散りぬるを (TOS Remix) feat. 抹, らっぷびと, ｙｔｒ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x536b53e707aaa8ea50eda7209c93e8733606ea5d415baadf706475d294d5f947. 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/JPW562106105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b7edf3487d2af4a79c7200b7efc94dd074173bf1d1bd0ae722ffa0de1a91cf. 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/JPW562106106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b3b5f44549443be23859955dc338a2c998566a0ca4de3e4c8e4f0f87c9f219. 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/JPW562106107.
How Typical !! (feat. ｙｔｒ, らっぷびと, Romonosov?, 抹)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5993660f05993fbab617ef16d4024fa5e05c38085854120c5283f9f68fe5b36. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/JPW562102526.
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 0x917970b68ce1b9a3178bae5665bc4021a46d22a256fe70cec15af9a33944c971. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/JPW562106099.
Flying Fantastica (feat. ayame, らっぷびと, ｙｔｒ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e075ec6bd5ccd8389c137289e9129c0f7a9fdfbfd8662f615011b353604d33. 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/JPW562106100.