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 0x5e5d09d9a5603106d876afea178a50b93079c572bffe8561ccef12e9266266e5. 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/d9fb905a-e211-445c-8cff-68f513794920.json and https://artists.proofprofile.net/proofs/artist/d9fb905a-e211-445c-8cff-68f513794920.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 0x8b1070de4ddb03291e856eb64272b71630030a0cb162d07d2fe7d33209f85ec7. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/ZAC011900122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fa60774f38b73a831d69faa0896e1622c0ff8d68aa3975744626e6c80a449ee. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/ZAC011900123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87cf553933da6ff0d8314d28cdf64e185df9b40c2dbf55cf034d7ee801ed2aa7. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/ZA56E1405561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a4b646dff2e4f91c97d5447418c7f90ab1640d15a93fdef29b48692f641495b. Chain 2 (Bitcoin): anchored in block 957688 (2026-07-12T09:52:21Z), 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/ZA56E1405562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x164b3e1f133a1247e825d8715ff709b502b8e0f97a8d24abc1ce6201559768c2. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T03:47:32Z), 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/ZA56E1405570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7439fe4eeec8b316fa91b9361e8b7a665392575f0fe1bac73b399965fa20777e. 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/ZA56E1516246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2978a2c97a5e14647641b0e57e23fb7331a2e9483477fd2b8d083ba23248761. 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/ZA56E1516129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2394f4c862dc04e4743240751152f5c04574b1f7d011273a5594ccf8aeef49. 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/ZA56E1516122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc29fe3f45b691557d3b13affcd341532bf496e1835edba794d9947a1286aedf. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ZA56E2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed57b033acbbb9b6c26a1afa16c0f74495a9c187cb31f3232cfb83a7a9117515. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ZA56E2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6698fe4d993256a444c9a7cf90d889521f7e914065582f935c597306d9e914f8. 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/ZA56E2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e7780fba98063597edc83522a7fae94d5505c44513ad86b0dcff711869dd78. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/ZA56E2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91ca4117ebfe5a78a4177bf43e114f364155600f35e73547be8f783d8787222c. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/ZA56E2529231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba6258bc6443c1fd8b0317009ee6eca749408ae5788c78ab83d24b55a6a1188. Chain 2 (Bitcoin): anchored in block 958535 (2026-07-18T09:42:49Z), 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/ZA56E2529232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe79201f94cbcc18731f694fb1e05a6f2fa78f8e697d7ec5084eb20dae50b9ee8. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/ZA56E2529234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec5e3063e37073acd5b54e1530b02fa0187c05b2f27185997963d9024d8f600. 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/ZA56E2529235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885efe8238f764e366f17501a2fe782017a634bafd39551ade12c51d65025547. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:04:29Z), 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/ZA56E2529236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x849b9e8323c025450c84690f88c4741491373fc820279236e0ae398e74d956a9. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/ZA56E2529237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f6b866066955cc9a0546c68e72294a0d28d1d9aaf5c1fad0b91dbdf8554fdd. 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/ZA56E2529238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b22d4be7cdcea80eadcdd9531a88d09eb03d0ae19779042b0d1080ce6c7a95. 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/ZA56E2529239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x347b16150c5494e821c667f66a9a5210824cea16c5b4a0a5c7dba8009c90e9b3. 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/ZA56E2533045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf408f57609fbb70756827574ae3e71b3a3701225594f9202122e3130b0b17aba. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/ZA56E2527253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca03901ab6c31dafe4a03b4c28acb6ba5fc398c0757ed49c2a29701a73d83be. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/ZAC582501568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca03901ab6c31dafe4a03b4c28acb6ba5fc398c0757ed49c2a29701a73d83be. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/ZAC582501568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0d3e9597d14bda660f8af45543e7589bd9c29af1b645cb68d784230d7c66cc8. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/QMFMF2558118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64721a275360eb69c8c4770309f443ae15948e389d0f29f692aee33a30f38463. 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/QMFMF2558112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf164d4c05f9623b2c8c78653afb76bd0a7d4e3e477e36f6f8318ece090eb89. 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/QMFMF2558120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7fbea21c3cfa391a6b5cc78615492e4adde3a39fb7be29edf14f4c8eeec7ac0. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:11:15Z), 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/QMFMF2558116.