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 0xd27eb683fbd264df5bed1b81909064e0d41f2ab6bffbd8126f992f25ff661ba6. 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/f8c1f42e-11f2-4753-85c1-0316d511890f.json and https://artists.proofprofile.net/proofs/artist/f8c1f42e-11f2-4753-85c1-0316d511890f.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 0xe52f6953fd83652d6f95ec30005ca477489c4c7e59408a338a62211ed2a09a23. 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/KRMIM1910777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ca5c17e6cd63ede638404699390c3c928b1d15be00474a1c19e7d01599f994. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/KRMIM1910778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a6d95986c64c657cfa25c650cbbc5edecb4239957154964ecd6c33127cd30d. 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/KRMIM1910779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de26272538d82aaa9615b2a798e447da697d47d67dc2a04bc5ebda22f88c41e. 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/KRMIM1910780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579440be4c276cb6fa08b8ec829a6045d20915f2dc2e2869879dd884e557c94a. 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/KRMIM1910781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae3d0e7569fd800f3b3789998162e5e5a9256bcc4d29b4e427fe02db46ae31fc. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:49:45Z), 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/KRMIM1921062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff8298cfe79a3ded9985f7e56c08eb11921a342afd5fe40b39da972b538f58f0. 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/KRMIM2007941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca9185d63ef724fef4d693b99b0bf128f4d2392f31a866b6d647c90595e64ea4. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:36:02Z), 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/KRMIM2007942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4afbeeeada87e937f6596ec09355057404cf3faa77e3857966e53515fec8468e. 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/KRMIM2007943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca56dd15269a95961bb5c80cab475134db0d1cb17a4ebe552f62499ccc162ed. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T10:28:15Z), 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/KRMIM2007944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc679f22dd2c6b3c563945a42b1102b4f9a5872f0fbcde07514d083bb011d0102. 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/KRF072100023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf55ef3e663820bc4a88b23cc42359cec1a30193bebc8dd30c8e65feb8cc79321. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/ZZA0P2305079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a55907901229fd3df763cff4ff797e3e9ffb2fcd0685f7e7f305c55c4554075. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/ZZA0P2305080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b719b0eb4ec4baf4bc64d5f9c252fe6978adccf65b177851b4db66aebb04f0f. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/ZZA0P2305081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16088ec1c964fc7979f93bf1f4b3d4c6ed055e4f172613990c27c67ba6c2995a. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/ZZA0P2305082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa6acdd7ba97bac9343da70cf31d39417517493011e0aaeb861051e419cba76f. 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/ZZA0P2305083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x907eb481eb7b83813470eb502fb11128608010a370acb414d4f900cc7f5ee1a2. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/KRF072200036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x687baaf425408c74048b91145c096cb075b11d24d9a1ad49df5efd4a63eb5543. 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/KRF072200037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f33567db398ebb1477d9edd4066358fdec296576524285c3099546b16e563c6. 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/ZZA0P2305084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03efcbc117b2dae3b14bc302fce793bd19d3333772c3e37ab732d10906efa930. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:10:08Z), 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/ZZA0P2305085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fddf87e84a6ca9ce0d45b69566e1e73191b65287cab596b86b188774279774c. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:03:37Z), 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/ZZA0P2305086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7fa83116fb6a7f6136eb2fe1111d9ae999b3710cad69c01385aa0967f169763. 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/ZZA0P2305087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc652870c71ef96a2a586fa07586ccbe84089541127bcaee6f7a3bb07ee4558b. Chain 2 (Bitcoin): anchored in block 957801 (2026-07-13T04:17:08Z), 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/KRB472302112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd7df150d6d02da241dfc9d53bec380ac881b138de8fa1da9de7fe85140c4b0. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/ZZA0P2404226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x826424d60f010a6f87a15367ce805e83bf1dd407cba91ddf1cf15bd366dffa31. 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/ZZA0P2404227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e5cd08d91835823d7f13c01de16ef5f49e0569666c9aeb627abc1e7b4767631. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:10:42Z), 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/ZZA0P2309237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d71236b0c1e4484b69fbc9499978af591020a86a5b035b7fc9be5f3b757f4fd. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T11:05:34Z), 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/ZZA0P2404229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae413e4d2a21b1d5b9b6190d27226d3f3d6195487c9531b2e8f025a148aa2486. 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/KRA252402200.