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 0x9de1dcdc4ca4f0bfe7b3b7b9786cec8534b524fb7111db0cf405582210165453. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/db61fb2f-127e-49ad-9459-53795f84d44f.json and https://artists.proofprofile.net/proofs/artist/db61fb2f-127e-49ad-9459-53795f84d44f.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 0x346562a87e62cac247198bf3b62abb0ff9c59d1468965dbba8a2bd5abb7db6d2. 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/ES50A1800144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a6e97c1929b7f28e7758c917e7ec941d81443ab66d2064f58241fc40ffc4562. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ES50A1800145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x801e4e75c7a8d93ac7ee17fdfae94d523ad0067a661c24d9762031a56c1a0244. 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/ES50A1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fcb0132b54abda008a51f617fcb7f1c0dc7e7d2ac770cc22a10b9fcd276c35a. 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/ES50A1900289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283cbdb5ddf8a7894a093149b29d9adf5719d539cc6614373dbf74716190f738. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:04:05Z), 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/ES50A1900315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7add2066a31f8dc768aa16a84af700c3085d4c23f74c0862890ae85434261143. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:36:28Z), 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/QZTB22350218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdddc08a43391b7cc299be0a25ab32c4ccfe26a5bff58d7680746230bb30134b. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZTB52309846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee718b8f2980dacb1924835f7c40d48bd1c9cba7ea5d6d5391b9c09fa1d274f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZMEN2485045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6be334524c3fb1e9601b059817960b5f2b06686e1e23c16a5b1149440c8cc0d. 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/QZNWS2429758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad527106f16824aceecc4448e7a607873ac38fdaff64270a03fec41609470769. 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/QZNWY2417927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d9ca46202056e7d2ee064f89a602b350c29e8dcde2b32bd938d2bae4a2fbdcc. 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/QZZ7M2475333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa8736a8830f2929743dd8591e2fe4916caf3944c1d677fb0c20e9976bc7b79. 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/QZHN72597189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cff33f7786d95c6bec9a043304bd8a0b22832df45850320704e94f87ca6b1da. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:06:25Z), 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/QZK6G2556348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbdef32ed4a0f9c6c28f302907e56f81a6bd85bd8e9809d9d6b692efcebae217. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZNWX2561892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aeb12fbb465927e541ca3c5a51a4d627e362257b51b1f6b677fec13a054d0d2. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZZ772568521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x882790eb17f74442be4dac4771a2f59146b1efdcc9a56b22a8c73bc8e219bac4. 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/QZZ7P2503404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x302d7ec34ecbabd191341982fb144c7ad7a35954ae5815633f2162d604dda393. 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/QZNFJ2305948.