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 0x94454b7e54b64f995b648a05028c6354133fc6e9434638400ea96ac8b1adb33b. 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/5d8523fc-6c12-4938-8ea8-680ed31ef8b3.json and https://artists.proofprofile.net/proofs/artist/5d8523fc-6c12-4938-8ea8-680ed31ef8b3.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 0xb6865985a430dc85b530ca8a0276f9dc443a67f4a99995286942b30acecacab9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CA5KR2474062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe70e18a2d9438a1b4c2c1213ef263766a83dedadd698f5680b42b9607e620843. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRX762472633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f5af521c8540b1719fdb9a8bfe866adc55131e70cb8fb1c1cfa0497bf2152cd. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZHN32477117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96cc657ce74ac880ac35b2682f7e5e26e3201e2d1c1ba455fee7a66bd90803ea. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZHCR2400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb2e3ec791f446510bfa6ebdfaf7995af59dbd64d235c72862861307edac5b6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZWFN2336675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb3af03354f8adea827d3b98e926e1983fae1af6becb8af9fff3922d043dfe76. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZTB32377732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d7feceee7e1b2b891361967db80fe3e192f1b69aa8675290dc9162531178349. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZNWQ2338222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d076d4f81aa374aa9b81aa944484d1a8834c37168e2649d3a1855db23c51af. 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/QZNWQ2336294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d57860a91f3b6445d1e5523628288bc9b845da5c18cd629e078d7f2b13cea29. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZMEP2385720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec5bb8577acdc06b96de31eeb754e4c3529cb76c13ab813f8790a4a4a6ae9691. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZDA82301129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b4d4860da2ca79a0bd904366724f1f497eaee12e897add887b2ec6a4827b8c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZFYY2333690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb20986f0d0323892c81f6de40fac2e631f83d38c27690af16334ae2f656f18a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZTBB2256075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a75d7b916b99330f3d6dce904878bb09c4f837d5fb2d9a820082c96b74e62a0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZTAS2203991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0108476a024e1b02aa667135ebbe3617c5ba42cef5e74a2f4fc1904729e8d06a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZNWZ2235863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x593c4c614499c06d649774b682d0bab1b9902757559060acd660a37a2ef387b2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZNWV2265620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f5f54f1ba8a09cdaa1624a118f6c6d79255841d560bc69baaa6bba4a482784. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZMEQ2270401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8789293ed20d307796c881a279ebc2087d12166cd09e20a4d4b5446806ac7d0. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBWUL2226803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaddc15bd5d9c9181acbd4a8dbebcdfc2c09ba3f0b38090b5d160b7e875d16c1f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZES52226589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf862a167bccc9b3de81f0e31f1d6b088e3220c8f476cbf6f65c498f3117cd05b. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/QZES52226591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x205367525044f726ec6eb8a2c4287aad5b5661ede7a43a6dfbec7c8e3ca98564. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZFZ72269571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f4c9a978dc3a108f6be2f04adee4e85e931f3b3e30bede50c1f398ed15aafbd. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZNWQ2159769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7401e02f3bcebc387268838c0733e83449e910830bcae2d5ac9ab215d7e5f5c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZK6P2119418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab4cb3338d63f3d669e30d34a6c76c8eb98f61c8584c012ba90f2092ce213657. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZK6P2119419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b539980748813de83330f8e8de90cf20135615e6f4573bc5ae9061553868dc. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZHNA2148411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb14f9deb6ca3f4a1713400ce4cdaf2e649feb8d215979676b6621529e1ee40bc. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZHNA2148412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dde664386aad42450269608f612f472ab32cd1b606bfc5a84b36694f5c96e9b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZNWX2009170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b8ece5bdd80d30b7e42df026fbcb0159942dd41d093c170e00ac11c182fa7c9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZNWX2036931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4fc94a4a2509fa73e5c63743b9dea0f377546822ee428e040d0849b6075fef6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZMEM2095156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dd5220902b43ffabf84c9eb25031f98c2be50d4d26a5ab19a5e5b5a82f65d22. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZK6K2080994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6865985a430dc85b530ca8a0276f9dc443a67f4a99995286942b30acecacab9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CA5KR2474062.