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 0x83028326b2e817529f6ee1b22008102f3b6305c802d5b25a7c64401dadcf45b5. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cfe821ef-afcd-4326-a8bb-5441e00876ec.json and https://artists.proofprofile.net/proofs/artist/cfe821ef-afcd-4326-a8bb-5441e00876ec.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 0xa4e7d9559104fe93581485f533826c246c4c8fe9d5c014e0638e196022c7062f. 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/QZHNA2072298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b5e797fa74b7b55d59cf180221ca29dcb3a6a316aab0c75696255f2433732db. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SGUM72000160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c5761451a78521b81a0c31b79caab59ca06227751078691fa38afdf75cd0202. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:31:24Z), 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/FR2X42219148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc8316b3ace27d28cd7626ca8419e0fff3ac23d1fa5c44a29a26edbca6de4fa4. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZN882289439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x400b7de52c1f57ac059e0ec730d81935a1b66935f625bc5cbb4cb221dd47e904. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZN882289438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x465808a211ef7c39e3431353876406a19afba077e12e521c3ec9a2a713c1c878. Chain 2 (Bitcoin): anchored in block 957565 (2026-07-11T12:18:39Z), 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/VNA2E2210334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x465808a211ef7c39e3431353876406a19afba077e12e521c3ec9a2a713c1c878. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/VNA2E2210334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e920ed3949b957c3faafa382e01c432fdc22a840c5dd1e78294ebf678e0a56. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/VNA092300432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77b2eb0004e465d7b7167f02297b89243a57a52b2614898e6502836d85d40e10. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/FRX762359237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb02ca541191ef7da9bcbcae25e60781bc2b4fb948b7c962306db8464f092e473. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/VNA2F2400052.
Vũ Trụ Đồng Tiền (From "The Moneyverse")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf50ceb50223b2d5f79777694185cf243b3a33f8a85a47ffdb3cac6623f32675f. Chain 2 (Bitcoin): anchored in block 957531 (2026-07-11T06:55:18Z), 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/VNA2F2403085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f5cd5e257e0ef6badbbb8d0d89bae7bd14d0dfd8d7a4ff58263bbdf9b65b90. 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/VNA0M1941013.
Tiền Là Chi - Remix (Mcredit x OCEAN MOB)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e11b626e18c8ebe0427ed212928655d27ba21517d3098b4314f71fada10cbb9. 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/QM4TW2302883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6181d9e2a22e364775360c8e3bdd97c1ac854bd7dd26563489337831e7aefb14. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMFMF2219839.
Cô Đơn Đã Quen Với Anh (feat. Willistic)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x625889860837acc044a0a0179b46d08f2111a575774afa93cf29f79dad1ea519. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/VNA112000157.