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 0x2338de3e6e325071a61f5c5aa08e963e71be436646d2ae7a4148895fa72f80d1. 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/0b3f781f-fd81-401e-bbb1-7a43a9d21184.json and https://artists.proofprofile.net/proofs/artist/0b3f781f-fd81-401e-bbb1-7a43a9d21184.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 0xc014350bcbab381974a6b424b0b74a9849fec9ea4817b78487fa61194785048f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USCGH2336182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a4e0c9ef8cde8e17d773e25ceb8083a3550d1862ef061ceb4b6bb91c026389. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USCGH2336184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x382c3325356d9c1706039a06159453b181dab65164f220e393cdaeef2dc069e1. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:11:03Z), 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/USDY42319072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ef4980f69cda683864fa4cdd2892ebc9e0ab1976441ea67e30db296ef3c1ca8. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USDY42319078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8869b93dc943935ad320a4d877187763d7452fe442923027d46fe8b92f32a000. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:51:52Z), 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/USHM22357979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f412ae226204c320ffd51cfd5e277dda3f96557dd0de1ab82ee58bbc543191d. 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/USL4Q2356451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f84994054e9073fbe5ff54fdce24eae3fec150581b85037cb01a6bd09c162d4. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USX9P2323165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09af2bb4bd031a289569b2b9ff87b1f8c5a006f731fc3337a4bba9de585ea15b. 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/USCGH2467093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c37d6ac662b9be2b95dcbe559e933a8243f41f25fc7c802a74d1d4b81881c86. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/USCGH2467094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87aad3a210b72616385ed168863446f8388e3e70fb73490137c20617ecd79b62. 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/USCGH2467095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46513e05fd2adc24d9bc5f0f102c3be7a39ba041cb808cd407458a3d21c7fe5f. 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/USCGH2467096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x646eb4eb69aac2e19116dfbb622d98e85dd9fa21eeec0406aeca5009460cdc0c. 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/USCGH2467097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c768328311a5a1e908383fc50ff30a118eee8b0095e81d7ce2e211de38aa03f. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USDY42403843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd114aad7bfbe1d817e3cbf7e0d1b7361d2ea50b0daf1f37e78b642fb6e4d72dc. 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/USHM22417475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81fd2baa6d6ebc4e95b3b246a3a7af2d2db4e6321aab0b37539caf75fbd5c4f7. 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/USHM82454863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae381b7f0351060f54d4ee93c5d1e1ff86b11de914a3b7679b1d9352d8a2235b. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/USX9P2401178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503280fc1a544295168a197886a534926183950192e3a20c42fd38aabc2238c8. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USY242408636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f5fd3aa1d2e6896523882630009c13597308d094ad3f752ff736a631af5151. 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/QT3TB2408732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc0444f8591f4a4f5a549e1e24ce374f4ca8eacee0b54065e05cf758f9abde2. 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/QT3TB2408733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d109dd13bcc845bc86c8267092c73747a95f1cb5d6f05929570839413cfa8ff. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QT3TB2408734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c11c0dbeaa2f2004685d24a29c1ca8f918bef122e96eaacb1575acdadafa32. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USDY42546218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc457b48d0b9ff566b4489416a1338eefde272c38ddc79af12e5b69b309b14ee8. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USHM82575626.