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 0x14258b2c6430d54cfb7c3a46516275db910da5c1d13e2e6699fa0e5c75ee89c9. 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/c7465a27-0b3d-4b90-a53a-bff0d7d28fc8.json and https://artists.proofprofile.net/proofs/artist/c7465a27-0b3d-4b90-a53a-bff0d7d28fc8.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 0xab4999a3e1c280be3b9aaea57818ac8846cc173034d5e1d907dc82979c1a562f. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USCGH1477520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca27fc3fdab015e922cc696421b4c600f8fca822a8fb5c3584dbc0e66d703e99. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:02:11Z), 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/USCGH1477521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa39377a50819915cdca421fd1bcdefe8e6abe1ef423fc433258e4343e9a51cb6. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USCGH1477526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x302fb84f6ce9a3b9a780e9e08ed27384bb3198fce3a7d277ca5fa1b0a1e784fb. 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/USCGH1477527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446388c8a16ccb08560719c60af7809ff20d38919d5b265a93fc6ecf2f995305. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:49:10Z), 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/USHM21601729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a4e6bd9bc7a4d00258981f8a6023d75671405f0c3373e82a7c290d5e891bfe. 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/USHM21601731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x904e296ec456806833883b582c03428ad367da69a05a574c42d76162be887c6b. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/USHM21601733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ff4d46fe7d333c3db26a0bc90793930e630128e139cca223786b91ec2a6edd. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/USHM21601737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88521527789e5257e56a418d0f240cecb63d7efd685faf2934afac999be13f34. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USHM91703902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd207f9abe85b5dcb0bd560fd764d64d527cc479e15dbe4e523d139f81455cc4d. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/USL4Q1830567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6382306e9e888c60d3d4e689603cb276928985b938b04fe18bf32cb4083fb984. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZ8GX1700694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f9465432fc138a32b16b7420bb3c3816fa36fec7c26ffa84d59e0867f0379e2. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/QZ8GX1700695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x467f16590c18486b2b634c175cfd4241803a86f94b6f10e05f6a672e3ad1e69c. 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/QZ8GX1700698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c9af3f52c346c13dc46d24d3ce239acd957c30ffd4bd85be0c8b18815683c11. 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/QZ8GX1700699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb405a9bb3eba0848bfb1399d42aafc1894083c8965bb88c2476bfa0a7329e049. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/USHM92056456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f2c22085078e6fa6e247c74e94756ae0bcd2dce73d88b448e9d7a91944eb5bd. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:12:28Z), 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/GBRKQ2145494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86f9b1e6d1f08bc408d9ff4d2e2efc925316deea3f82124fd3f9c50c798c9a97. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/GBRKQ2145502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb6ec40a3f852c0336da1032b10d2146f1ed1ecde3490627fc1600453ff8522. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/GBRKQ2262667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x601be6d42a266ded959012eaece532f6726278f548f766fe4e95ae3ed4f47b82. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/GBRKQ2262677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f71082eb8e1ccebe8c4d36893b7707536c171ad3433e8ff341b0e5aa878356. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/QZWV32462925.