1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0x7e81cd28726e451ef51d9ff91bfa4339626251649cc6eb62d8b53c88cb6c9855. 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/58ba39bb-e630-4632-a2ba-aca60aaa5a72.json and https://artists.proofprofile.net/proofs/artist/58ba39bb-e630-4632-a2ba-aca60aaa5a72.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 → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0x315037631912aab58c76aee515f72f931993405fb749886870be221b162b439b. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZNWW2251576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72c19a9aefb675c4017feefd4c4972821a5210c82a53a0929f0e6e65491c0882. 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/QZTAU2216991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4aacf8d9eff3d701c4f8abeeb356056d97753db0d35aeac6dfe664799c163b5. Chain 2 (Bitcoin): anchored in block 957591 (2026-07-11T17:21:30Z), 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/QZTAZ2272556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d4b3af1012f0aa4b643bf22cf520f78b8a67089a8dcda1526d918ad087a7ce1. Chain 2 (Bitcoin): anchored in block 957596 (2026-07-11T18:43:56Z), 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/USDCH1049990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9273f086a32282e9f4ae4a8562d9b768d62ea2a0051d3d3749c00ccdd291393a. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:10:35Z), 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/USDCH1049471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06de6a590b2eacea003d4914150f400f87270d56ae080ab8ff30fc8918cd3c08. Chain 2 (Bitcoin): anchored in block 957591 (2026-07-11T17:21:30Z), 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/USDCH1049480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6df49151f0945b132feca8dbb0fc460119484ec2537994999e5c4c8006a1aad7. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/USDCH1051879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf901d8b0b0b4e4c870e89f16451b5006e81791c5489e1a0eb93c0e643f5a274. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/USDCH2352574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb467372cc543bcd9b8c440ea9742ac46b6dd45fba00dadeff60ef29ef174a650. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:06:31Z), 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/USDCH1050038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc191747d34c990157109459906018a562d3c1b6da8060c093f57223e7f8d3148. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/QZNWY2338484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcdef741bc548675820ad4c0d62c8680db13739efeb213325c8c6de2421808f0. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/USDCH1051895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad63f85f06b14889160cac191136f6bcad6ef07b6e83691f905908f6a6a021a6. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/USDCH2352648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd02617f2d75002257224c0a553cc88454f5e4a5d036a528caa25d87aa97ec136. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/USDCH2352649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd265d1cca2bde83a4379c13711fbef8b30ccbb13e0e99a6d56cbbde45a0ec7d6. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USDCH2352817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3878314ca0740bef04f1b1d02b276138f404e0cc658fb28589e0d97ca084e69b. 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/FRX282408716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c106aeaaf729eb4d4477fbb6c80682cfd83f758c34095574ab5052d690125a4. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/FRX452444242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ca299f7a664dfaea33879180ab0f52b43f6c4e9769759b16602e5d56050705. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/INV582302214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x400795d22d5d67dd83c2591cb061dd343a1b81659468445da8c3a9187e92a383. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/FR2X42501707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd439918fed08ab37b82b8b785aba9238fb715c5359450f5eafad60a658404431. 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/FR2X42583676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05402e271abce71b874dfc4404003b7a88d8e0f8c3f950fd21a65cc999b40c69. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/FR59R2515585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eddc619de272a1ccd706650639b5af5393668e734683576548fddaa143ab95d. Chain 2 (Bitcoin): anchored in block 957595 (2026-07-11T18:26:17Z), 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/FR59R2515520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a751e40bc7800d8eed77cd916951b0c52f53808aea37111da01d72e57483ffe. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/INK782500224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b27df2ea25459af7cd0cf2ba7fb406cb9128bd8ab53719f7310ee12767d6fe. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:31:25Z), 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/FRX282556494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b74171ecf8953f7255e3be1d436974e8b93db361661c496bd223587076b3da. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/INE182572645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc3ef677580773141287e9e5dc079e83440d8645acecc9fceedd8de73dbd0497. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/FRX452599255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf80ab66ae8b6b71599c904862bc87b18bb9c00b7125548daa92974140086c2. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/FRX762549617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x951dd8f10482e6216752fc0fe6f05e5bdd391ffb7db348a6a2d41460bbf04812. 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/FRX762576050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x876f221f68942ff755b5da31b9b0249a224e02a63b7af79e4dbbacb1c395e729. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FRX872539911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d9d9d9a17d643113f11c89fa36586fa25845efd61bba0bac83c437927e94d2c. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/DGA052558211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa06053f6950bd3a03df93af44737e35cb5118bf5db3249ba9f9ba6d2c4b1049. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/DGA062530924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ab48bd1a818913d51278b3bdc2ccf276fa2e87ba7da684365f0ee9f5a129f6. 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/DGA072511704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a6adcacab3e8177a0674d4343bbcfea195f63f1f6c412990cac61951e3ff90. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/INE182582327.