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 0x866ee0170187ca669ae33332176d9f6bd2faa2a36b671e4adc5cbae9cd3a04d5. 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/99c426e2-668c-4423-9354-47dda06e91ae.json and https://artists.proofprofile.net/proofs/artist/99c426e2-668c-4423-9354-47dda06e91ae.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 0xe6b29f8aaf7bec8ec21b65e56e4a47d5f4023433bbcd106d2c4dc27d62b50b2f. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/QZFZ72001035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4082dd0127ceeeff361595d5a77108c68985d68db0b0415f0a53254581302d90. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QZK6F2099951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f67c159750812d2beb5751bf0282bd408477a16402268487e0f2f51c79eb96. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/QZES62076897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ee0f5a19508908fbfaf287287d1fe0758ffbb649be854ab762cf8c9299ddc1. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:28:11Z), 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/QZK6F2099954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x319b1643a7d55e98c16d00729c6730aa3c5e8b5bb241f6fecd8e99d84b625a99. 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/QZDA82288441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x893d4305848b30904b15219e653d758dab6a39916e53df78eda54383d146dd85. 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/TLREW2234099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbfb84468650479ecc050636b9328abc9797d85a02555b6f7b970b0c4479828d. 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/QZHN82204989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe616875612d847b11176c3008b5726ad891a377d49c1be1d3e59fa27ed796cd. 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/TLREW2234101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b4595fce173755a0e85c0f82390c33adb46a9d28c573c36727fa9af03926124. 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/TLREW2234102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e026c08d26eed798f5ccc60fc0c671cf7d301bedc1daa9d9e7b01946c6828a7. 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/TLREW2234103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe153ca9449c70eae0db8517226815be8c78f71469dcace9a7d9c6b2b17578b92. 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/QZNWV2287787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6baac004881269ab9e5fe88dd28b4d887dd57784188197c600fef4ce5d123427. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:46:45Z), 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/QZTAU2286736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d708bd63bb1670a91c284b7334e321e4badbbb2382b1f66b820d1ed518be2fa. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:21:57Z), 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/QZTAU2286737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa1fb785ce5f927552e5a82bb67f450c8513aa9f27ebca46f928550ffc3f3cb0. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZTAU2286738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76bac8af4dc73bcaeda3cab2db7c68a868b4cc2dc38091714a0b314428843754. 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/QZFZ72261630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb68b7c8fc5ea1f8a3c1dedcd707d9d36fc82d4fabd93e9afef9c7c699c596e. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QZTAU2286739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c0bcf0c8e1649f7f822070efefae5e930549e09b2a6bea8dc48b958f569ecd6. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:42:22Z), 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/QZHN52316812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1cc770116c0c78d57909064888809d6b5977dc20b2fb074510b222c201743f1. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZK6N2390609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8836ca26981ff02f166f0826be1bc22ebfc47d6ef876b1787a1a05cb787832fc. 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/QZVEM2362784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7238f092586f4ede6f1fd5b60479d2f24de4cac246e5e129ea4efa2d547d58c8. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZHN62465293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ef8d48f6a486912b5b3c1f7c7218fc011a7bba77aea385cac3f7ca5c42c6b2. 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/QZHN62465294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c299c1547df5255df1016b135b326fff4dadea6637c1d15616deceb690458a. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:42:09Z), 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/QZHN62465295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ff6f11c6b4c29c86798382fd8b4b71afa917f7298fde48479f0c50879c3839. Chain 2 (Bitcoin): anchored in block 957868 (2026-07-13T14:56:55Z), 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/QZTB62490170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc74013f7b337c2bf5880d2fc0706a57c40b88744a871a59d3988aaa5e0307d1. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZWFG2478244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4944c955c583b180bae7ced32cac396ea2041bf0c34c2204f3aefd0b9f881d1b. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:37:13Z), 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/QZNWU2522604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x942e153623d36c2dbfb546124a6f642b3f1cfe49a910ed3d7552a02c308a1a8f. 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/QZHN92318814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa31caf15f3cb074417c944bcde21b3d469bd3699c8d94befdaf6bc1e21c56204. 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/QZWFR2456873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bad63e854930eb886a75495788365d7a452b79ad4bff0188197fdbd49a2ddde. 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/QZNWU2522606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd41e0d11460db0d73e9e17a0e784b5f7880ab0c11eb5bb0922b5b02bcf7f1cab. 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/QZTAZ2499584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a1fee4f1e42dfe2a634737853841f2a8d53f2098eff7d62f3c4690c897be9e5. 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/QZK6H2566423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd725e19b5e6f5404f4763579e79d71a94cbeab27b23a8ae2c5e212a5e91663fd. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZTAS2346226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2cdc94055a82d009998f5a9b24ef8b2e6db9ba2060c87e2d362ef34ef7267fa. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZDA42548926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ff6f11c6b4c29c86798382fd8b4b71afa917f7298fde48479f0c50879c3839. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZTB62490170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe21502285cecc9995072129a855af9e8df391185c9ad94064463528a4fc277d9. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:25:11Z), 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/QZPLR2379469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c0bcf0c8e1649f7f822070efefae5e930549e09b2a6bea8dc48b958f569ecd6. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZHN52316812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fd0f08ab94cae80579de2e281e365cedd40abdb3d468b65ff47b6e28303e583. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QT3F42458004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc74013f7b337c2bf5880d2fc0706a57c40b88744a871a59d3988aaa5e0307d1. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T13:20:06Z), 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/QZWFG2478244.