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 0x885dfe86db2a6c6275ed4e1c50f64884b5f30dae0fe2973f80afb947c8844a4a. 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/5df3834c-2d7f-4f94-9852-45f76bfe9ca1.json and https://artists.proofprofile.net/proofs/artist/5df3834c-2d7f-4f94-9852-45f76bfe9ca1.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 0xf06713f267376bc426211129e2f83430b33e57feb9a4188dac6587f88deb4e8a. 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/QZFYW1952117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd434c0edece4fc9cb367ed05e7ad75b3c17edbd0d7fd490c9062d72cc6a7b5a8. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:17:12Z), 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/VNA0M1910088.
Không Làm Phiền (feat. Pixel Neko, Foxx)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x912d47585fe82611777a296ba61614864076560ba73149cba7992ef73d8a48ff. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T19:59:00Z), 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/VNA0M1925453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cfbc0fd9fd51443a9c323a9357f5714b5516f444c77f4ff5eea4b8611e48e65. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:06:40Z), 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/FRX872218855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8bf8e2853f87cc5dd2033ba042850b9db21f005ff95d01b15ef649554fe5883. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FRX762240331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb50d30e3d67bf1b76493befe3a79ab7750eb910ab5fb520a58de23264c124f16. 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/FRX872218859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54ab1e70c123c81b65cd45039e3bcc18216cef52ef935b49e1d0a3e44486c1c4. 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/FRX872218861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3768195fbf5a496ffd51c30e9a61281d6a2b4b565a8baf83c683cb3af1ea421d. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/FRX202253745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21eb500bc80e44a2313fed8fed1b63ea14f69a774ec91807f4e7e345f4369d9a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/VNA2E2310244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b76bd96283d248d38856d90f768eefd370fb6a56796669972826602df1d7cb. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/VNA0M1930016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c40d187ae9d9464eb9a088f844c760cd8c7c00005be25295fe341b59e075eb3. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/VNA0M1931454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4700cda8fd5716962818cf4d9136413168413db9f97a4b32dc6a5f057634e0a. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/VNA2F2300054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d1ac8bb760b3619a15afc80d2374efe23b98b0d91fa932a819b058a42b20eda. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/VNA2F2301006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c5713fdcb2c62c07b428142f827bd9e0985d6ea8a2ca6dd67ba99d2b3768816. 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/VNA2F2301582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03164036070b653fa6980474a808a101bd3589a5ce5ce414bc11f706e82cda8. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/VNA2F2301930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c581df06638b0e18cf58f3b189acfe96639afa0b11ac8477136a645f828f3a5. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZWFF2399972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4adecaa7fac538c45b24cd631de71a3a1032236a98012f5f8c2248ca9307a189. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZFYZ2405981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a0d456a2fca1e3c889a37c0147ba4950a82857a60d46e789f666a76eb99e4a8. 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/VNA2F2400049.
Hear Me Say, switch position (Live at ZLAB)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c33c02ef9344d55957b7fbc6f87d18c12e228c6cd4d23e92b9dba729993be0. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/VNA0M1936960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cfd399fb463c8071adeae8023e9832c4de4dbee4f279f0736ffd32313a4aaba. 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/AUBEC2462336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab08ed969033d595fd88fe030f3a58164da0e23eea0f435353553aafe2284441. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:57:14Z), 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/AUBEC2473336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x844f773265e7f3beb26f83357a1d9ddb7a94e08ad50dceb5682a67f19ccb2b3c. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/AUBEC2473331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1439219ce6e9239ad469adb9febbe64e4bd2357ecdc42e023b4ea7139583078e. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/AUBEC2473332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d6f42f2f77a2eb60fc307f8e2eb7f52ea6fc03ce44d68518234f987bfb2c2c7. 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/AUBEC2473333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58e47648148baa11e2ac307ea2cbdcf28e084f0b31cb160b9d9dfa3957e12b61. 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/AUBEC2473337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a0bc0434aab471fd8105b07b9714e7fb0f254878d54721a5fa92019fc0a060e. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/AUBEC2473335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb065eaac2ce63f423379532faa81cac2df36a4c376fa50b26055cee96fd91ca. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/AUBEC2473334.