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 0xb75a8ea9e5342c319ae179a43231e6308703f7d0a412c4c4aad9b8edc71c2e1b. 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/47d2cbd3-30ad-46fc-a610-6fa89aba8999.json and https://artists.proofprofile.net/proofs/artist/47d2cbd3-30ad-46fc-a610-6fa89aba8999.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x8f1b4a2474999aca5c02a01c284eddbc76026e2ecb9ebe1eac28868ab1f51031. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPS809907233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72be87a30b7113f577e3c37dd8a748c59992a3c5de13cc1b86bbcde9f130e49. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/JPS809907204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c6b314c27a11525142d48aa69d926f8ead3c7bb905a9f3919f9ed27a7b5e0d1. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/JPS809907210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x536aab6ae014a13c873df581c6fa90d1d02640f901f7dc4b8162d3273b1e9086. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/JPS809907211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc46b61ea0fb45668db84188254f6f6bbecd76b6964250c0f62ff7e75b6834b2d. 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/JPS802100348.
サウイフモノニワタシハナリタイ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b7432a84d0d0085c3669f20b5b0dae14975606086a7d1a7964ed4ad3042089b. 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/JPS802100349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbae5b92698b191fa2ac8d149a1403d2e7ace19b918c002fc5fb7324825826bb0. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/JPS802100350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f9628c6a229fecd5b0e1d93819fe9f88547c0271eeed2be8247d856cf019e8b. 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/JPS802100351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca9893833588f4954e4cc2c5264f9e46ea57592cd113e0bdac6573f65f0a7dd3. 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/JPS802100356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b654b63fef0e82a4cd28d69b524b54249dc531621bf2341a4b4262c7426e5d3. 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/JPS802100357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd99d353f15bce38be183543666477cdc13b52b01c39e069de861da13207d03ed. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/JPS802100358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20811b1dfeb48dc624405caf1cc8960291f911e3eb1a1fe53710b8eb5467253b. 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/JPS802100361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc7dfbf879c6fdf069b3397591acafd3c070912a0421a5f654b681d8081dad3. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:00:58Z), 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/JPS802100353.
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 0x00ae993e8d35766b4ecb65c14388740dc304ac36afbcc25c565643fddbff640a. 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/JPS802100347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc41dc4c239d52904a8dbb143ac6cade71831ea9fa0306e201a15841ace0eeb51. 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/JPS802100352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc99fd065be1585269708739eff17c05ea60e2b5e80dee53d0a0cf4e5ca67db7d. 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/JPS802100354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1da1f20b1839f822c62fb57bab097ad16a28f70f55bea338fb198139b53e50a8. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/JPS802100355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe983f17d40467fd36d43f4e6de888ba85202c3fce361a870a1b78ae2a3fb26c4. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/JPS802100359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x431cc1c9f1e4084e3375317109f89263c816092395193f47768f0fba602d0f25. 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/JPS802100360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe522253d36536bbf5cc318dc3470be01f637fcc1d272f3ba06e07c2b3a2ea95b. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:26:58Z), 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/JPS802352928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda656f27293a57fc524135813b6e7a406ba7e1af200c78905b17c8bd7981c48c. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPS802100377.