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 0x33e3dc44fb873c2ccac13768a7af513ab084b74492801d016e00344742c9437f. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/789799d4-855b-431a-851e-85466fe29c38.json and https://artists.proofprofile.net/proofs/artist/789799d4-855b-431a-851e-85466fe29c38.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
CHUNITHM ALL JUSTICE COLLECTION episode I 1
World Of Metaverse CHUNITHM 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 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 0x3bcd5d82bfa8c374980dec71d5ed6f93517e13feb5aef8cdf23195e7bffbb5c0. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/JPX301606870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef5a8a490f38921cea12416e8bf6eec702d1bb8273c86e8b77787f00993baf4. 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/JPX301606880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x607fce62a339d581279e2774aaeb57322397adbab98e654bc808e4942b9dd537. 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/TCJPM2077359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1bdb30f88a7179c380cc7508e75b5c13f9baab637b932b5b2311822adfc6315. 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/JPX301606900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x506c12e22231e2c2e9833e0df68adefeca29c001aa0e0f8dbe900d5afaf2addc. 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/JPX301606910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd62b81d28df3ac3e745fd02f2496b2f94ef11aa5b69dc30f2cfd77a0501719d0. 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/JPX301606920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01f783172713e1468032010db2576ee0466b18308fa3bd5735c30c0e1e8ecc36. 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/JPX301606930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb55fcc60b4815025b546d61745d8d3d475910c63c82af2cf37bfff9f29c3cb83. 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/JPX301606940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd110315aaeba01b7c277eaf14a24ec7f48c03a2aac5089ee58d90099e3d0e7e. 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/JPX301606950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad2cc6a26f5dc900ea55e502b501326971b9e9f19f8f0e35f00b7bb7c9aa73b. 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/JPX301606960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609860591c8149b96baf58674ce06b93f72e5cbdf9d67efff5abb18a9e5258fc. 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/JPX301606970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x078db2a1ed04596c7320b91f061ead06788a9a75573bdbfa468c8b3728678264. 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/JPX301606980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef93f1e0ca39ac97ac0e9d3eb2530ccc83ce371e1645d40af8937c923919dc03. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/TCJPI1983196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3b09d34603c151dcc35bfa5830b9d8dddbdbd78d0e203318a1c53fd7cc4aeae. 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/TCJPI1983204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fdeca1ac75086038ecd78a0e055f1deece32eed4de31ad1f9f25c207cc63810. 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/TCJPI1983205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc00758acf4529d9db63c76ed0f19d5c31ce8704fcce9624c0e77f8832c09569f. 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/TCJPI1983207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x045b13360c459ed6471abf685bb88035e0e0a9daa36ccae3fbba40a7983b3be9. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/TCJPI1983209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7ff30fee995668498d7af60e8ec14daa24edb993aa12663f6414cb755bcf24f. 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/TCJPI1983210.