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 0xee17f4950b9520be34f4d8d8375e88776ac315adee8a8cb025f65668af88bbd0. 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/e087f22b-2e6d-46df-8b49-b525adba740c.json and https://artists.proofprofile.net/proofs/artist/e087f22b-2e6d-46df-8b49-b525adba740c.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 0xf8e04dd7bdd0a003ce121503683ebb8b46f3995c652d396b8eeb0b9fb8c7937b. 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/QZ8LD1717325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4173e3d6dc75e9c6464197e6a076636bf3465172a99eb4f2c41b74a9aeb92f7f. 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/QZ8LD1704702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x345f65d8b7ab1db1735b75329c970ce8a8d85139119259917a3dffbc1ac05b8c. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:18:26Z), 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/QZ8LD1704704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8137af9189b53e42b89957131b639c99e955aca42e9d40bfa5df00b304dc99a4. 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/QZ8LD1704706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8432b7e0b3825afaeb761793a73add7f1094a7ba0774128c7a73caf5ead806de. 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/UST8K1784143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89313a2c34ec87c5c85c590cc236e2a438056f9411e9880353762f9c526c26e8. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:46:08Z), 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/UST8K1784144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6aa979f84027c4af99dbcafd86137010a1e838c0c783bafb1bd40d160a4a3e9. 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/UST8K1784145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e2b72a93ce88a43b6bce1b58016d946514054aebd6f02cf57c6947451aa7a40. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/UST8K1784149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0734099a61bfedef3f4082f7e4f241530e6b43ea4c1f8ff21f82864a954e3ce4. 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/UST8K1784151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b416244cdca82c6ea16c4cfb8ecf8b7bba34583eaaaf4d783a313b4820dd2de. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZ8LD1700346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd38101e1f55772e59ee50a96f453f850f3b8ee33173d1f5e2c2bb383b4488546. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:09:45Z), 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/QM42K1943185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x618a2292f566444eff3fc9c3ecf905de590861b8177063592ad015d742a1b5b6. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/QZMHP2000221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf1b6659f4dc8379dfea0576dd111ea956eb9e6b3d821da876e7ecfdef03da29. 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/QZS642274159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ebb134c0962b8ee313af42508f7b35288f2eb280778cf163629b163dbc337af. 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/USHM81786651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe5dd08baf879734b628483df8d9647544fc5f8c458d6265e66800b36cd3b248. 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/USANG2169178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf1b6659f4dc8379dfea0576dd111ea956eb9e6b3d821da876e7ecfdef03da29. 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/QZS642274159.