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 0xc38f487f04b71a184d573e657d6affd420ca07342d12d4feb1f2c547ed23b843. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c0333762-b26e-4824-850b-48941139ba0f.json and https://artists.proofprofile.net/proofs/artist/c0333762-b26e-4824-850b-48941139ba0f.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 0x812d871c8ed27a98aac655a77749662e6c114cf4cf1e0291f22051dd39af7d51. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USA2P2333378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc93befe4e852cc1f87bd0b71da27f4db0d1252f9bdb729c006debb13910395. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USA2P2334152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4771aa90200b8a230fdc99d83ebbde7ae68dcd807b6ccbde2dcd5eccdbd0016c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USA2P2335553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc52908dc44cd4f029cdc99ae243e9e3222a42281c7c64a99a10ce5404eda64ab. 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/USA2P2335554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd5c215475b833f734b00f1d3b53aa6099373ebd7fd833a5aa74dacbd102ef60. 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/USA2P2335555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ad880f006e588f3e1fdb72ca3ce5291c0471e018b2ac7bbc71b6d98b204a9b. 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/USA2P2334150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b5abac6ef2685881a395ad75ed7646d1ae00cabed171638ee2f1c022aaadf99. 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/USA2P2335558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa33ab4aed1b514dd57ed36cd682de1f619567a9d81bf1de0129cda7dcebc3de4. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USA2P2335559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f59e26e43e88a39ec31131cd8d20cf55b55cb88dcea92758031e0f864af12f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USA2P2335560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a66c1879b7a38f2a8ee860a631e2eedadf1f26c718fbd23449feed4f484a52. 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/USA2P2335562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d30dc14130ed85c209bafbc97794115f6fe8821eb2d5a16a83609a119ebfa2b. 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/QZHN32470350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee2a4124f3b6b5da2370eeccd8fe84197e3a3bbdfdb5c8bb77ca5fd5f6189229. 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/FR59R2458198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5915c0c82ce3503652b034a8315bb05e709b9b96ec6d835d0551c411381caada. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZHN32470351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fdaa55e117339bd358596f46dc06af7769a9916c897f71366a2385a41837fb0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZHN32470352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf31dae593ca391b793e76dcd0722d48c22fbdba32d85b74e5b3e9d211847edd6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZHN32470353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ee502988e922c1e6cd3f0ac852971ad0ba1882f1aa031b67715497f02be08b. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZHN32470354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcbdcc382819250faa27418deeae551cff0428c7fe1237ef771f687f1e6ee9a2. 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/FRX282241237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeebdb4e1576daf2d8936c3f2f79f6b9384e5c43708f5387dc1caa9e56d3d9c0f. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZHN32470357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641769c736f2d13b15c78eb94b558cd92de215a56bc482b94fb54b3238be4ec0. 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/QZK6K2356869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c8e1c176b20e8086f8333c760924a41c2c7375f4cc2fc566e44bb17c0141466. 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/QZDA52121293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb87541784cf3f88ee1d09136559e7443a898596c4033a2457b24385a62f97198. 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/QZDA52121294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a434438b8fc736a552d290acf6da3ec38a3ae4132729375cd2d1c176b8baf5. 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/QZDA52121296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf813858d78b6366aa8cde85923f4fcd2c17ee3cca29672d9f1f55aa58e51406e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZDA52121297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee2a4124f3b6b5da2370eeccd8fe84197e3a3bbdfdb5c8bb77ca5fd5f6189229. 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/FR59R2458198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd68b83f9816a15bec8b632be02758fc6bdab8013ec06a9e4743cc0635a36deae. 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/QZK6M2368477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91ae36891fc8138420c84bcc570e17c8170a23e44d15568e419cf668ca70b1b1. 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/QZHNC2355354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcbdcc382819250faa27418deeae551cff0428c7fe1237ef771f687f1e6ee9a2. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FRX282241237.