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 0xb748c67e2f15d55271c10ea0d40d57549ac983e6db74c3d0c4dec63350129c87. Chain 2 (Bitcoin): anchored in block 953762 (2026-06-15T08:21:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b8a64c40-480a-456d-93aa-aeaa02dd3858.json and https://artists.proofprofile.net/proofs/artist/b8a64c40-480a-456d-93aa-aeaa02dd3858.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Main Theme of Kinjiro Ninomiya (Original Sound Track of "Kinjiro Ninomiya")
二宮金次郎メインテーマ (映画『二宮金次郎』オリジナルサウンドトラック)
May it be (THE LORD OF THE RING (COVER))
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 0xcdb1362c5ec6ba87ade03d4bcc383847a894d324ce0951d0f7000de29d67b8f2. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:05:19Z), 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/JPZ922408290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f61a7e0d4bba562aa977b28590f7ea57a198690ac277987318a8e7e8f76144. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:05:43Z), 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/JPZ922408292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x392207f7249c16db354ad237f20439f9ff7e50ded24b7db17b0d3b052a01bb5c. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/JPZ922408293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c99fef11a48755f234855b477f5a5bf9e629eaca5443beb5d691c361c255be3. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPZ922408294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x165dd6175875d13511249dd316ffbe98aa1da98c8196cc8d4877a73eddc7d9fe. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:57:56Z), 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/JPZ922408296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b12ed7b3f3060cb831ccf61038ff80a1f89ceb1f4f19edd7d5257c5b095e77. 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/JPZ922408297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7919e320ee180d07a59fc269d8185a43d2a11701647f54afda92a492da36461b. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:09:11Z), 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/JPZ922408298.
シアワセノカタカムナウタヒ - カタカムナ5・6・7・8首
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaee9a9a14ff448bea984df3cf9f320e38f7cebf8dfcaba3b6a08cdaa71d89c1. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/JPZ922408299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x024aff7d0e659a71a129b9e43e0af66028516d68e683a0c7bbf45ca01e2cd889. 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/TCJPE1614637.