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 0x8ab6e904f43bedcae2e3b2a8fc7091a0158953f38be0f33d2c28829f7b9a5366. 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/2358f665-a29f-407e-a457-6ab84c9a462f.json and https://artists.proofprofile.net/proofs/artist/2358f665-a29f-407e-a457-6ab84c9a462f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Panty & Stocking with Garterbelt The 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 0x06a18324dd5239f80e8f6c90bbd4de4bf3131f73191b2755e47ec9f9447a676b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/JPG751000895.
Persona 5: Dancing in Starlight Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a9b52579183aa54f4ffbea792b15951516c31f5e33ec0c795166253170659c. 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/JPK651800303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47f25ca6b3f9402a571813aff72da2d1bb78748a8e757ef838c816691deaf1d5. 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/JPB600937901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef04ffd9d3fd17e4bd6e410b1c565fbec4acf6149a8c200cf6cd3af90e985f68. 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/JPR502304143.
PERFECT MAGIC - ☆Taku Takahashi 超東京マカイゾウRemix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x321955fb9def71024a7859a90ec86b5d88e6ec455580a74fb687918df00eb176. 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/JPB602204765.
VIVA LA EVOLUCION - ☆Taku Takahashi 超東京マカイゾウRemix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8a74d40f9a9eb9d41cdd8dd43f198dfcc2689e4805dfe588d4d6c535b747b0. 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/JPB602204767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d9b1015ba6856daa7a60bf16a5119855f5883c47b4dd4bfea03aa307a76dc72. 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/JPVI01417600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd703fd1c61ed6df812391f3cd64ad0cbd8ffd3813610874680249eba5e045892. 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/JPVI01426770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd62ddc5750ee8d94ccca6aee4b6940ee698e874db3443b0583ea67e12a4207. 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/JPVI01426880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x204030ecbc34646113615cdff322463a605e52a54b8cc901ff37fa8f02f8ad2c. 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/JPVI01426980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ad907e454e5ef9ac6967dbbe3b6e3768faad1acd8bb9a49e39c1fda07bd5e1. 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/JPVI01404770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c022c34f97341ba17944cfe144214907626e4939525630046d6dadc5c51f144. 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/JPVI01404890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01f2600f7b82f5994fa08698f88149a586a34564914801976bb72552d28c7c2a. 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/JPVI01404950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b281860973786f8e6c5f65291076b7ab5735152e68e666642afb6bb99f9114. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/JPZ922013968.
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 0x0bd16f4c4f06c2f35507791cf44cb768fc9ec67647ae92d70ff6592877eeb80e. Chain 2 (Bitcoin): anchored in block 959146 (2026-07-22T17:24:40Z), 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/JPVI01426950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a34906fda43e193f9ba057bc4b37b4376a3cd41a2b49d521fdbb8dd85607e34. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/USQY51301805.
LIBERATION - ☆Taku Takahashi 超東京マカイゾウRemix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e1f0ceb632f1851522e0d5f9ca4e29552440941775619f8646f45cb11ef506. 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/JPB602204761.
CALL OF JUSTICE - ☆Taku Takahashi 超東京マカイゾウRemix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e6ea67b57f8f1b64e499919bf01f27208e55f7c92e4cb1618f269f7e3ea0b3a. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/JPB602204763.
Memory Suddenly[☆Taku Takahashi (m-flo, block.fm) Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ae89dbc00f975a8f4ca279cbd3de130ef1a38b2e2547c15fe55d51c38827887. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/JPCR02105900.