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 0xeb4bd7f57a9f98e3531030c544c035c2e1bea4eb48443821f20c3c3aea81a0bd. 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/d06fe73d-cd21-40eb-a62d-2837b18f4dd7.json and https://artists.proofprofile.net/proofs/artist/d06fe73d-cd21-40eb-a62d-2837b18f4dd7.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 0x2898334fbd7811410e2139df17bc53978a899fffc31bc4d8b8bf15bca5e4375c. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZTB22370848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeddb691b23ce1689f7227b40f83aa2b3aeef94a99e160b9ecffb8d3830148082. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZTB22371154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab452ab3a191d4ed297e6d7d81713ec297e2bda93a66aece3b690215acaf957. 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/QZK6L2416818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd950a2dea0f5bcc3d4aad6f74b5644f3f9ac920888fa113a9ed87e1678f9ed5. 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/QZK6M2182375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b5153d1b4f1f53b1d829928ca4b14e937816ed9433382d64aab52a889fd30d. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZMEN2070895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c090cf2f853dab67ebfbd8c5c3617fed003299ad9107997a6a77bb4151fa94. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QZMEN2070898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d484af9a55944aca4f94d69d4d09dec95dd65268817cd3ddc84ea1eb8ed0a51. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZMEN2070899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3962509c12c3e4dc03b73aeeaaec6e68c1f95dd4e6018992d43c64393fdd4145. 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/QZMEN2070900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a10fc3dee571f754465465ef2bef787cc1516453c7dd6ca24426bcf0898e173. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZHN52249611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e5a995b8b3b8cd1fae25f8a76d8be5f077cd58a64022d3a0e56feafc0af97f5. 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/QZMER2231653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb6bcc08b53085dda28c1dcf513917228dc24304e2710535048196e786eeb54d. 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/QZRP52241613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c94701c33b78a6a565441efb396e6aac2866faaa58a90760f6929271f2ce7b8. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZRP52241616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a47c369299d334e218271a9d825757960960ab75fe367619b672d1742fa9021. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/QZRP52241617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20846e72cd934fead5e73c9c9d9efd6dd29d6a05f3f698371198c169eed49db3. 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/QZRP52241619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c8471f23cc9a90e0e0a9a86161d4119bbbc781bad910770b4dd803fd840c1a. 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/QZRP52241621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb122c014033558c0b3dfad909aeb72b56dc47a052a2e8449a2429962530d67c. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZRP52241623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52eebc05d3af9a7ce21d2e6f886fe1936037eb2175cec3666fa9846d0ea1b66a. 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/QZRP52241625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c84b2afe389924ab5abec1557c763c07ad60f4c45465c9145328eb0935ff11. 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/QZWFE2447343.