1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xf4931cc81b8b546a85f45ab77c6db3a39ffe478473c449597e821bbeb470b2b4. 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/33003b01-df93-49a0-8aad-b5bbf88662dc.json and https://artists.proofprofile.net/proofs/artist/33003b01-df93-49a0-8aad-b5bbf88662dc.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 → block OTSBitcoinBlock must exist at that height 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 0x44725e4bb29706017b34223bfb640f4bd433572cb6fd2730f2d23aa807ec389f. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/JPI102301319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcfdf08026351bd0d1dc6594c59ce37247f86f9470d7f5f196f4b992f0322544. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/JPI102301008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8fe18f92ab88705afc37d0fa0e8ad25f139c43d21b00fbebf2c8f10d5b685fe. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/JPI102301320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a7aa34c4a022ff4c74e20eec2a30679fdb1117d56baa91a47b631f23fb3efa1. 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/JPI102301099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1332b5b59823959e5c3c42912e091774f73045656960de2ce16a2e60a9ffc0db. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/JPI102301323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb64e63c174a5c1352f2d09b0c0c6de2954468948cf58e2f8a4b4855b4918020a. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:59:03Z), 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/JPI102301324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x055818726e3d0f6fcd58b59cd3b3aae00795bb030e95f4a92873bd4fa4cfb8db. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/JPI102301327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f3922009bdda87800df2c8ed390aedba57c4c31fbdb5e1c20f98d65ff73768d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPI102302306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa065b1d8583949ee959c3816f0cc16c009351a64b76bc4e2945932e703bc8b2f. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/JPI102302307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8021eb9ccdbb04e3090b954881cd22f32e928fc0d15cfcc1f0752df4ef790a83. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/JPI102401730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb7e5b412ac897695cf412ed6ecf3c998fc2cd5d65ad25f02db258b4b5c2337f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JPI102500098.
Light Me Up！ - NAKO MISAKI Acoustic LIVE
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b187643b9fe549cbab2793bbccddfcdd910753bbe93164dad84622a41ed215f. 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/JPI102500099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf63a90505a7e04b4610f5ff9604a76e022ac13069f9644e86f52e4f0717b5b84. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/JPI102500100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0073ec961a40a433539de66cb362270ccc75a012f301172274d88c309b73e2b2. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/JPI102500101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae90071f2ff9c9d0788ed5c190016d676f64eed0102542e5a3cc2ad5e2f6f52. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/JPI102500103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf22233e2ae25bf5ab3b583b41050313b0ca2598c68331fa47109762bbba55e97. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:30:30Z), 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/JPI102500105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9551e36c1e9ddcbc6b304c399715731e8a513074aaf4d68e7213c315df405266. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/JPI102500106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe13f1a7c93a7917273345872f411487eda1c50ed778af03e92095d6c03cc1f2. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/JPI102500107.
Dancing! Singing! Feeling! - NAKO MISAKI Acoustic LIVE
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab5ca3f2675e2c9dbd3a61d5ba5467f506256bd3d05aa5c217d8eebae6e9ea1. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/JPI102500111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6de4714a03455d63b7cdf8180a717790d21defa50a72f4772074a34260a11ea2. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/JPI102501513.