1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xcc2d6d9553c7076de958d31d6e9abf17e8341c47cc3f7218b2a0348870f78659. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b9555d16-96cb-4d44-9a94-3d0d9356a23f.json and https://artists.proofprofile.net/proofs/artist/b9555d16-96cb-4d44-9a94-3d0d9356a23f.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 → block OTSBitcoinBlock must exist at that height 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 0x6ed39e235e70dd2ad2084c932b61954940c377a5515a5efa4afca61de5f95b65. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/GBSMU8207272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3441fadaaffa26ec0efdd091fd5bf2795b25a4d37d777312415d1730a4110b0. 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/GBSMU9164232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7c4a4597837f434d6ea2f68c3e781d9dd61dbef22f8ac97fe9e41406c8aba93. 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/GX38U2188897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52b98a5fc753940f547592dad34c5903e98a00fda96d9d775a20413315a11000. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T03:09:36Z), 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/GX38U2189013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc36bdf10ad01e08bd85b13886c05af74964d356a18236b232c2ad2ca2fc88d9. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GX38U2144588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa684424d972e33766cc13e3bcddd9d589f5eec977db9637fdf9cb0f0e3bc9d68. 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/GX4R52116383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a57f1fde3c7088137610e9f16bf660eaf668e0df7e9bcc74866f1542711196b. Chain 2 (Bitcoin): anchored in block 957796 (2026-07-13T03:24:42Z), 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/GX38U2274374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30bc5a769979b96d27d0c3598d79b57dab57abc7dbacb540b57e469859bcd66f. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/GX4R52232815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2894ea21e41f39d3d826eda08ea2bef7b4989b9401e5fd4b6e9ab2187d98e264. 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/GX5MX2281160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c8940e02d57f29fac28fa9419c99ffad7c19bc0b0f7e552e10598cf627bb63. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GBSMU0136273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x612d6843a3b526b3a555f4ea2c618e2a0a24b5e651fb035b6370c0670b6496cf. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZES92571937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x254021288453f76c3af1631c815fe0f902fc24d148dc16e042730f0e62937133. 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/QZK6J2503784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0efcaa9edbf8b68619b6c94ad6e8fcf67028debaa5096ca6bb2ad7903dee4990. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZMEM2580389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f78beeea2bddd33b4abfed57fd45b7e2aa8e43c6f5ff629dcab1a05903b952f. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:26:12Z), 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/QZNWU2521911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c836ebaf546a92e9957634db04c8b70c318d9078ee13a641d84e1af5fad2ce. 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/QZRP42539624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94601e11c9a481361a3207343969ba2d69a6580d29b2716072e9669299ec801. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZTB62554219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65294fbb713ea8c3487f1227c4ecb45db838c0cbf48307e54c261d6c2ade04cc. 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/QZWFX2525578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d7980999e3c24ddfc7041afe874e58dc3b25bb0780c777a4fba2a038faf209. 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/QZZ7N2522071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ecf706a9c2f5cbc6afbec7e3e1c02ab1b617682dee07fa94ad44e4d53accc79. 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/QZZ7W2596066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b180b2ac80010c4af3c862d6a8b662b2fa09ea8d9a62fdf0e751283903b1560. 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/QZHN92093790.