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 0x27a5926ba897c60454a9ae82e6261d98b90f4096555777d02afa3a43830e00d3. 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/ec338396-8e27-4aa2-b1e5-12b34383afc2.json and https://artists.proofprofile.net/proofs/artist/ec338396-8e27-4aa2-b1e5-12b34383afc2.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 0xbcb85113ef143496a2b87fefde90bc5c2a1c197b8e1187ab00187034b4ea6dfb. Chain 2 (Bitcoin): anchored in block 957680 (2026-07-12T09:07:22Z), 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/USCGH1911379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe50ad846fad7a45226381122a7bc9feb3e20f0ba517a7d85d6910ae219a7f114. Chain 2 (Bitcoin): anchored in block 957676 (2026-07-12T08:20:25Z), 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/USCGH1911381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadfda848ec5b7abe3835e442ff8753be92513cc89665002263c402b4a78c585c. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:08:15Z), 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/USHM92027724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f2233f6a7cee79947d905591d3061292d31799f41edf2c278c3e9b249cce151. 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/USHM92027725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd91dac0a84154cf6d19542f9a903d2af329edeca28c5b5e8401a7e7237912bb5. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USHM92027726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c138242db9435967538b6085cdf8cf308aafdc4ec09cf447b66f6f0244d0171. 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/USHM92027729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc65e657b29b7d48c889d87bfc4f18eb498d964d036e54485b6ee33f3ed283f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USHM92027731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de686f634213eaf3854fd1b363285f5726b84cf5c0affdcab6aa04cb888e9b3. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T18:23:19Z), 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/USHM92027732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94220e472c1d97f4c1ea755c00305616c7394fe5af7b742663b49a2079141439. 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/USHM92027736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7866676c4344eed818094b5cb76d030402129d450e1200d73218ab6b30fff74e. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/USCGH2237943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe98c20faa819604f9d04c40fe537077a2542c04eeb76400ad9d7b625d9812f9. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/QZDA42213917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e2afd48d7e837cf8fe5b6bc060bffa95115be417edf849f41b39774f0710eb. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QZDA52211105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f82cd8b79896176d16a3dc0a0a515397a34843e6ef275e2acff20fcb7880f8. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QZDA52211107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f60fb7918ddcb62c69933774ee6f0a5d7af6007495b18b74e9f7f585e528a8d. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:29:46Z), 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/QZDA52211109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c83951a8c7cfbbed2693881cf6893b95ff2ce10ed7ae1500bddd9f88d35937. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:15:41Z), 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/QZDA52211112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0f4bd87700e2d28755147b7d3a7ef24f0dea6d46f2a4dc8775b7a26c98573a4. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:52:42Z), 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/QZK6K2375326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedeecd3a227a36b4122a2f2e6c2d1456cf528d998e85ad8675bea7b817bcb8fd. 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/QM24S2306367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37aeb5109c2fbc546e316895c3a3670cf4f1082d1226e03f0f5c66c97c96b9c3. 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/QZK6J2474313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0885d01ba7cbc9e6eef9fd2a7fdee358d224ffb8b4a4888441da522ed411b485. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:11:34Z), 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/QZK6J2474876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87c368e4c9bd4f6601516b27f7ed369dfcd48f1bf890e331cba2387fe9809951. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:18:53Z), 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/QZK6J2474875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb164169681b261c2d01381c26ed6c7c4d319fd19fe63297d029622b293553596. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:33:04Z), 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/QZZ7M2436101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84693eae35d98526a30bad7a1ede84ca7c4852dbd151dc2752968ca4057db665. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T23:00:53Z), 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/QZK6F2535811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c20c687b7f73af43a9b6c2d8569f2f047e9f05e17f8430b5cbe095d496b8c0. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZK6F2535808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb164169681b261c2d01381c26ed6c7c4d319fd19fe63297d029622b293553596. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZZ7M2436101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80763c322aedec94cd846ec614192988daf0b3cbd35c499453fd609adbc891fc. 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/QZK6H2571952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b78cba76f64e49da9941c9069f7b96616a75a70c09da6d6e713e677c98304c1. 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/QZK6H2590711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb536a7270e75f694cf7279ebc5498eb7b3ac0adca667ab9db377379e34506ecd. 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/QZK6F2535809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x558146c3044b35311675f0d616b93e76b2d367d209574c92123654b8ab3f65df. 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/QZK6F2535810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84693eae35d98526a30bad7a1ede84ca7c4852dbd151dc2752968ca4057db665. 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/QZK6F2535811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda44c140f8a522eec2f442623cf63701b2987e2cf490d304b86a02a4975f631f. 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/QZK6F2535812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca92a3915c98be756bf68dd0f4a02b3115260ceba368023230cd73706332de2. 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/QZK6F2535813.