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 0x51729137baff5189be49854831bc5e28500457bb4680ec4af44823791384285b. 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/5ebc3531-ca4d-4178-ac14-9524457c0f22.json and https://artists.proofprofile.net/proofs/artist/5ebc3531-ca4d-4178-ac14-9524457c0f22.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 0x11ad4eb7d362d6eb254732c8a80032118c7072284c2a1945fed890cc98864859. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USSUB1201505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab68b3591e7332d2765f25054b3a209b5bf7328a2d23cf58082b036cd1a0b73. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USSUB1201503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb9bac471fe16c629042715ea23fb951dcc8ae25ac2dfc76df3f211d65312746. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:34:02Z), 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/USSUB1201501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1850ff639b2deae4f42fda11a21adc867fea0fc8db799359c1a2850cea18958. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USSUB1201508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f0f0a90fe003d3d9095c3eb140c11e1e9c4630c58bf03f0105eabd9408b36c6. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/USSUB1212001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a98e597559e7ce56e0c5de6a5544ef32d88c3f1e3cc8b801cb6ebe23e6fcb43. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/USSUB1212002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf85368f42be406ce34524bae770588394fbe1d337808e433fc2a5dadd96534. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USSUB1719901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc355b8f4c8eb847b288446a21455990214b8069718b73dc4ec13f772d4d573. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:44:13Z), 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/USSUB1719903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeaad31af25689728ec7e73898eb9a5905000e75b862d4032ed4c2518b1a139d. 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/USSUB1719910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5459736cd4fa0d64a4782c70b7cb35dbd07e7045b81e3e327af23dc400a8e245. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USSUB1929013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99189b00efc894dcfb50efe67af60305c80a0debd8526ed50ce612fb9cfc16b9. 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/USSUB2034001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de90838e963eee856c66b3519a7db27e7b1734febc80b45fbe9f320c3325549. 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/USSUB2034004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c9f892d4b8431d3efd1113be4c62b96d73367291416ab43e0a3e99ceab2a515. 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/USSUB2034005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd529b434aebaa17fad56cef29695ee23e0519a6202abaab14f9a9374d5f90ae6. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:29:10Z), 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/USSUB2356006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5839c97b8faa4f8c03f08725961a3599a8a0e88b095227f8fe4e1de71b52617b. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T11:04:19Z), 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/USSUB2356007.