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 0x1806ef81cf16022814adedbf43f248095ae3cbe4a6d059f71de3d7f995fa70d1. 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/11e38364-b99a-4ea0-b2e8-8521bdcbd6f8.json and https://artists.proofprofile.net/proofs/artist/11e38364-b99a-4ea0-b2e8-8521bdcbd6f8.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 0x4dc460d61a5e3c57bcfc0ee6ae661c49e2ca315ba373837826c83f00e57ed1d8. 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/NLF712003045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3525bae5750ba9d3a11b7fcb2bce7d1b9f20454787eaf134a031a441ebfedd12. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/NLF712003046.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a6a9da9c72198aed2ddd01aaf83ffa33e4dd1cbfd7fa9fadfea6a421222540d. 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/NLF711904093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c144121c50e575cabde6f65c084a330432fc94d877569efb011701b276e3448. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/NLF711904094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01dcc45825999885bfe169b80d00170e37297b238743e33c7e3847a721f06343. 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/NLF711812997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6510ea82fdc61edf1e0f3272919c88d7fc56d5a8a8ca4bf3b9f4adbfcaffeebf. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/NLF711812996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fd8699c85173af4882f96c796145ed77cf7ef0699d57920c3b0861d13dd71f6. 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/NLF711811825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65d532ac738d80cadcab6f1aaa5b936089ea5318812584a253c945078b94300c. 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/NLF711811826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cf45c6784055ccfc3b0687aa0288a55ae9240ea8996e0c0fb9f3378a3dc89be. 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/NLF711805806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa5e86a1f0747382f11d007c16491c4c6a4640cbe5afae6edd3d0d6b95d65d9. 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/NLF711804211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd3606f736587be338f1f021561d72d25fe2e2100c20cd1caf26e7db9e6e3fcb. Chain 2 (Bitcoin): anchored in block 960352 (2026-07-31T05:48:30Z), 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/NLF711804210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f74d56117a92b42e615947ed695a57ad9f22169a792d2893d1bb11fad1779d5. 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/SEUM71700898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7331b814cd183f466dacc99c67a78cf654f50a296ab14707936e74ee3ed924e4. 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/GB8KE1756742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9382f2721d410e5732bcc71d12a30572aa823d23a8fcd3de5ec05286bc34bec. 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/GB8KE1756743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6327f0702d005849cf625289d04be1c10e8df9e721b49a7bc8c403db4fba9e32. 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/GBJAJ1700771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea35238ab1a008531ad8a56c3b739aa6c69eb5ff0fe279adf3ed5fee39bf21c. 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/GBJAJ1700773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d4c22267625047da1d6306c33a8ab6896784c460e5d400d3d3f7e946a818c32. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/GBJAJ1700772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cdbc4d760350067e18f746d1bf15306d5fc55e1c600c08ba038f3d3f02bfb17. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/NLF711701301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bea22d24778d0f6aee4c01ba56146a98f496c21b7e28a4c9b05b914aa013a9f. 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/NLF711608671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf086f63091b51a854c9b066c29e40506e9b413ef2320387b4e97067c2193605e. 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/NLF711608673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e5aa31a86f5abd1ef53b7784ec184e11db6a22be82633c83caa765db64b572. 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/QMSDU1600059.
Isla (feat. Kaleem Taylor) - Aevion Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x625f999cc3a6abe34efc92d224cb9c7e6e6e7f51ef3a4c37246e65d61defa9a9. 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/USUS11500019.
Isla (feat. Kaleem Taylor) - No Idols Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd71b56bd3aeceb4b13f5fc3ffcf28cf22cd37dae97d7ee4adfdd3bf956624c. 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/USUS11500021.
Isla (feat. Kaleem Taylor) - Babel Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b00d76d594d53b887dc213a2d96c113e987d695055f95b8399605dc2bb34191. 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/USUS11500022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4dd6ac63139a830392f77139621771525d7e0085a68b43789ec69528dcf7ee7. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USUS11203481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a6d4252b4cf6688c4e55fa29dbd63a78ed05ebe00ff3d7d6822c058381836fa. 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/USUS11202971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cfcbca190b2922fb2ce7b6c1e29e9b8c66ca0c858d57b99c25008f4100c5e04. 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/USUS11202901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d2a995742530fc03f38d2f2688d9e7c2a98a19c477d549abed2f21930afcf4. 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/NLZ541701600.