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 0x26e7cb6048dc0777d08ca08afd1bb0d38a223dbc7981868fc5d35564f66cd21b. 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/d0ca9971-a947-49a7-a88a-068869cca041.json and https://artists.proofprofile.net/proofs/artist/d0ca9971-a947-49a7-a88a-068869cca041.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 0x13d9779ed168cea537b64318b6b8bdbfbfc0447c591d5dbdf6cde11e8e0187ff. 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/USCGJ2463635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe09405a56b3fd32700d7a51462af28538e2290f1b8e7d505cf237817c520c30f. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QM6MZ2438558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b5417a6e2f1482027e8261cdcfdfca6425bc5e664631a1c3d13c954b936ee53. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QM6MZ2438583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba7a00853c9ae9ad40728b4b2237c3dc3234f111a2b543e53380035b079a879f. 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/QM6MZ2438590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91946d3e6bd81a2862067a2bec5348d94092742c3235c513e1c3142a3ca4202a. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QM6MZ2438598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b12f183a2b1a626ca60433a43015bc31a84279bdc6bc5c6980a901b2c6490c7. 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/QM6MZ2438747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x815559bb22b6dc22cee2103aa03c04e05cb33a38c76d4cf9a4cfae5c3d60be93. 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/QM6MZ2438757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4002fa857b5e222ff18787c23d54bef03fa2aeb60a0e219634be7b728bf2138a. 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/QM6MZ2438764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed05142d6df051c6a86f234fee9cc38b9f8130f2d46b81fa9e7ad7aed36687f5. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/QM6MZ2438793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd148a37870bb5b9b02665f7e017b2e6d839b4243ddda29fcbdcf8fe39917d44a. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QM6MZ2438810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb3193cbc896eab105e7dbc9d48ae6b770bf71a3298ac561d6e4bfb002c506a. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/QM6MZ2438603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x448bde4e229c3b24ea1bdd2283778ba9de2b9f1dead67558f65a03ff0bd55ad4. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/QM6MZ2438616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e936b8ee17422bf3bca7eb3e5216a093cb5f56dc53c97696c2554ef77616f49. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/QM6MZ2438634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aa5a7b224d8931f17fcd52b79d7ba4a31b5585ebfd19f6662c5de734f8908db. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/QM6MZ2438644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd32150cedaeca7774166cffece672f5730bf3ca8d3c36292725b566d470357b4. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QM6MZ2438661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab6e67e3311a7bd79b419747b4205829d542a3f6beeed511e1948c277819628. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/QM6MZ2438740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ec4657a4bf359c9039453c4aed925aa07e3c3327f9cefbec7ba0e807ad2bd71. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/QM6MZ2438749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaf3e44969f400aca9ce4b461ad14030600e431c7382fa406c3e879fb5026a8a. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/QM6MZ2438788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbcb964abaa0c357faf1e55357aafc6d59394864fc4d0b180b4101069f07011f. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QM4TX2416233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f4d44e5079f2bcf0d0b2d2a532ef486479a1b8be7980593340d3503819d6938. 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/QZDA82270920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x302141196ca619e1ea6e307d3bac78492d9538bfe017b91d89525c6eda6ddfbf. 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/QM6N22248455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ee2e08794307a3f584c3e85fb89590f092853c6dfbf170427f6ef294cfdce6. 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/QM6N22248466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093743c694ede54c8bc867c027dd8e4703d35f29b2dd52040adbead832e8bc8f. 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/QM6N22248467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d1af977474b10f359478b7010c9d29f62dccd31806b220cf927e9508168f2a. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/QZHNA2246134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c74f8a109065a9c52ad2be07dba70ea9be260cf30be27d6155aa81ee53c3097. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/QM6N22248456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f44254c238cc8fef6b6390a341588fda7586575d41190deaf47359594b98c7. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/QM6N22248465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c2dab731e2b00e39127419b16b4ede2ae3e957049c268ff48d3845f95299888. 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/QMFMG2376947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da1e61c74772a49f61ea0ce4765c9635884be4e08a774807cc391b464b5b747. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:52:49Z), 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/QMBZ92393276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f8f7a6379f9ef3edad734add5cd380fa16d6f020f2d8e4db0cb0f49a1feda7. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-21T23:03:01Z), 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/QM4TX2362520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca2b0c2c9f189cd0dfc4eb5154ad8a7ed4c9518b1026961815ab1e37197ee129. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QM4TW2358857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f1949a3329e8de0e3a90248a0cd56c14ac8635c128668623541a1644a275e0. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZPLR2149848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c3d2dc365cf5e5c1e048369cfd2da9a29e96da9fc20080e42754062a29ecc1a. 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/QM6P42106286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf324320e77cda94501c7485f0689ed1cd4930fd7f9f4109b73da862dfc1278bf. 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/QZMEN2012903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c22c5ed477217a7d98e220d2a2643314b5b67e0a563dfea7423926e1c02f1e. 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/QZK6P2035592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6dd25db0dbb905d510154efa3e0af1c967546ff9f4299de391da0ceecc08db3. 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/QZES92016227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9dcf82acd2c255a7e8630dcc6c2c129877105986bf41091bcc2eb890d7d8088. 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/QZES92016228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24f4cc356b80d2a095e187a47a607a4d34de0bbff7404595529f38643cf871cf. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/QZES92016229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0634194e85657fe96f54149e32390593c6208cf108f2067d65035f1e2efbe510. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/QZES92016230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x862ebc9f32083a82c4df61c94d04720586149719c1b3f575608f930fdb2c9c99. 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/QZFZ72047107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e08eeaef7892e967e9bc49cac23b6dcdc2952974f0aa076a6830e19772d57c. 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/QZFYY2082278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82ec33538690565e7cc846ccf957fc0edd6d878e77baa117562be4de91f9bf2c. 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/QZK6N1993918.