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 0x70b533f78051121379b24e51291093845a00c1bcfce4dc20c1cf7ac0f36c2063. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/78f7d3e9-0aa4-4c2b-921f-1b5411db2068.json and https://artists.proofprofile.net/proofs/artist/78f7d3e9-0aa4-4c2b-921f-1b5411db2068.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
”Togainu no Chi True Blood” Original Sound Track
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 0x628a15159f9e3b3a224d7593135fb52fda38cfd22303be114a96fa1b2d76df74. 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/JPR502138989.
Lamento O.S.T. 〜The World Devoid Of Emotion〜
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1acec971e137acb168081dfd548f9a87ebbd1aaf22a83539c878731a6378f2. 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/JPR502139044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bcad3f26ffd75e7774400f0c150386203b209060c4dddcfac3d54b87356faf1. 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/JPR502139045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b5386d3d8f146e86527cd39f6809bb4707f17433be9be71062b1819389497d1. 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/JPR502139046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad4495b6f5f13b9f422b99d2cc5f0144b2d4a0ce457f0e9ad1d83eb056dfa10c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JPR502139059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x712a0e91523842571f02a057e82209c029d0a69b9317ffe2f42e8223a6a07810. 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/JPR502139062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34bf2d34cc120d306b974f6a31b4c987ad770825d6a097a945d8e90c058e817d. 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/JPR502139065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc08530cb0cec0f6d29e056e519cc3e28c709381bc13c025f19bb8cb866269da4. 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/JPR502139066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db52a7ffd056e22d50798b8747ffb9ccbd6b789eb4f6af32102d35d41b30862. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/JPR502139070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e17996d2acbf15673f7a32eac403ca052395e7573db6d43675fd300f9faa788. 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/JPR502139072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7528af8bc5ee82e5f2e99b01bb5c2448dc4d25283373a87cafbfaf62fe6bff6b. 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/JPR502139076.
Jaaku Sengen Soukouakki Muramasa Original Sound Track
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e8b9251be1a0333fa77bba7ea6b6972f7699e9acd3d02b05106562a1877b3c9. 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/JPR502201008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x116b526caf094c36854a8e6ddaae985a2743717b18db1fed2a7c6648de1a19c1. 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/JPR502201012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ae262156ea779b6210a294eb2fb46353ad11058648b3972438b30a7fa1f9344. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/JPR502138986.
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 0x4393ff97239a5177691bed4316f3ed6123485aa139153c231ef94e08f0b75eb3. 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/JPR502139054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579a4b588b20dac75ce8b7e1be3cd6764ca213b85278f601466be311d02107e6. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/JPR502139064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad88e95897936d834f3ffa28004eecbde8367cf334f8ecc1475881d52316287. 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/JPR502139071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60b47b74b742157212740dea1e62ffaee745b21a25fb042000e9e2a690425fb0. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/JPR502139073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f9e36af91498a924ffc5c8faa5e47c1b789c89d1fe168a185aff1384d00274. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/JPR502139074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ce0be15c9f4d65bd4fe7e9f1623c34f78a5dd77530c350f40842527d0959bf. 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/JPR502201003.