LEF or Lef may refer to: Arts and entertainment LEF (journal), a 1920s Soviet journal of aesthetics L.E.F., a 2006 album by Ferry Corsten Lef, or Guts, a 1999 Dutch comedy film Organizations LEF
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 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 0xd2ea9314b49cddb13804ac40738e0cdac83421878fc7c6f62a4dbedbfca86fba. 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/c6c69645-2860-4cdd-839b-efc2072d9dce.json and https://artists.proofprofile.net/proofs/artist/c6c69645-2860-4cdd-839b-efc2072d9dce.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 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 0xad6dfe57c62b1f32ffa1002e725745a89202b0a5af3a35f265c9da30d99aa338. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USCGJ1906079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ffddefc29413d97e460d845452aadd5d8a27eef2a32d368f7d9ac333a669f4. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/QZFZ72057418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7221ce02080c0322a67c26dd4e88147a0a1283d5b7e9d94b776c16fd5fb64e1f. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/QZFZ72057420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ee261ab15ea78d53424121168627663970eca40b299ebbeca497847ccabf200. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/QZFZ72057421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91baf9beeb161c1889ebab8436d3de2288f397b23f189d4b6dd6b45b80b8266d. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZFZ72057417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71c314ad4d9d4a2654a5104520a38db15ece218507e1e681e198a96ce8af375. 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/QZFZ72057419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d414c03cb0a875fa8673202c6121bb58bae2807c63304aee568a591eae51b36. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZFZ72057423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a9f8499c7898a020782dca2d7411766c968d29440b9d98c9f5a391df1b5ff9. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZDA62051764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x936cfa0850201dae0acf8692100be21c6b1b3cc43397fc98c281df9bd930b45c. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZES72168743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5910bc3149ab28e1e84c94ee937180b692568d1c57574db57d7f01ee23e1364d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZES72168744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d5d2e56b5c60abc520aedd630c613ceae1beb015c7265c16b90ec7b17b5ce4b. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZES72168745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x402bfa4c91423b3bc832d5f418f2ca83e06ad9d3b79429254911ae6c5826a99d. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/QZES72168747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5910bc3149ab28e1e84c94ee937180b692568d1c57574db57d7f01ee23e1364d. 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/QZES72168744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d5d2e56b5c60abc520aedd630c613ceae1beb015c7265c16b90ec7b17b5ce4b. 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/QZES72168745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x801f3313bfd90a2f1802fa8b39d36ed37a77ea57a20e877ab88bdf877b25cede. 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/QZES72168748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1094358a99cbe4860d7644bc3f213e97803fd760f10c996988ff25a799e7579e. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZES72168749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53b9d31da38d875873574c3261143b65822bf7b3de0031bb378e262c6dc799d0. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZK6H2120521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ded1bc05e3b452d5fa6c411f32f176612f785074dc89860e23a27d3295944f1. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/QZNWR2114526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f05103eeec8b2192453024774e148027ea84a0944393e65a65fb189fb4c7d4c. 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/QZK6J2262931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab3c6e33d95b9714ed4331461c211613d8b4cbe428e67149274d388fe84e4103. 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/QZTB32238800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856c8687bdb9c6a14b52e2153fdcd6a86b9dbdda800d30723f9b33d3a7b72dce. 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/QZTB32238802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x221fe32a758bf7e4df20ca310940a1ae9b21d77b0fa52f49ff619d7546fa3e6a. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZTB32238804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x370ddeac33b29e015ae76e9e354c04f7be8e3cdfb19d16b339f47b62c15881cf. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZTB32238806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x875818422925c942a1f019475db20eb64cf7333d48e72664581650dc7e59ebcc. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QZTB32238809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab3c6e33d95b9714ed4331461c211613d8b4cbe428e67149274d388fe84e4103. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/QZTB32238800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856c8687bdb9c6a14b52e2153fdcd6a86b9dbdda800d30723f9b33d3a7b72dce. 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/QZTB32238802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc387bdb4e890489237e260d7391ac40c4fd95011d3482393298711b8d783f5f7. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZTB32238803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9845d3fadbbfbd78fcb0feb254344c31abf30f4ee0ffeda2aaa8497e04c8fea. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZTB32238805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ae506a9d13e5e00cfc03405b58b50f73af97b508ffc03c55c36c95e7144b0a. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/QZK6M2396862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x379996f4c93c4999383a54eb78cce9409c0536b74a19f020a6763575ac261d73. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/QZK6L2392167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3cac3625256024b8759681da6058804e8467954c85e0ed165ed462a6f63868b. 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/QZWFK2399768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3cac3625256024b8759681da6058804e8467954c85e0ed165ed462a6f63868b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZWFK2399768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8943faa8c04e34de214298cef4f8523601e627921750f4e509d1b87cadf37148. 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/QZWFM2310890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db23383f4f6a808138f3ebc87ff293d33a6bc6bbaba53129c1c60fd1a56473f. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZWFM2310895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e5e70aab5d2993aa925c35623c08c0e07d81b2687c384c4422bdef1d29996f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZWFM2310896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8943faa8c04e34de214298cef4f8523601e627921750f4e509d1b87cadf37148. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZWFM2310890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ff15d0dbd5f37dfc3983cc5af84adfd4160e47c10dae2e29b563bddd1c761b. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/QZWFM2310891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643ccb9b696c9c0b7a85d1d25818696bc6f9161b3dd4bc082ad1abb08c5e0786. 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/QZWFM2310893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db23383f4f6a808138f3ebc87ff293d33a6bc6bbaba53129c1c60fd1a56473f. 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/QZWFM2310895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e5e70aab5d2993aa925c35623c08c0e07d81b2687c384c4422bdef1d29996f. 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/QZWFM2310896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabfbea4b5516fce353dd8de12154e480de2a6a8bd626b2043b5feea462bb4c47. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/QZWFM2310897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16ed0b9baced7d0fd34baa9c6a5099625aef64888a9cf8aa17959b02a5842184. 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/QZWFS2330736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa191028ce8ba64fb42b10f15bfb3eff0934410d2325e803e9b441fc059024036. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZWFS2330739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x674f5fb497277a4cf7f44fa634a2d9fc611ffa449210d682233aadacf60664c0. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/QZWFS2330740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb26b0aabbe17b2449665405b305aa1f5cd03131119a9ad099adb760b27e34fb7. 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/QZWFS2330741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e3eebbb00175b1eed675790cca6d184f7b706d0d980166ac45fa4ae29b325e. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZES92457015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc69ae80aadcf8777054aa330e142cc5232c52955ae138c1f56e523ee9d5cc83. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZMEQ2490508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dc701fa96f808248712bfd9c749769f892bc543e78f13eb66e4b816c0b6ff67. 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/SE6SA2403404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0618975426547525470b3f6e1d97c5be9bb12b9d519c03310780d42b101e3eb. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/SE6SA2433163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa170d7333d05b93299f74305f506ced114dc21ffb15ad3d782c7647ba183c4f9. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/SE6SA2433165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8a7a4bc451dd40f76ea1f140d3b28a10c355bc8c52f013a666492e546c89d55. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/SE6SA2433166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21fc13b37c144afaa38abc1757b0eb74bfa6ac0a3954a9b8b923e5466d9dce22. 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/SE6SA2433167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd06ca14df7af93d87355a7daf6f979788267b8cecb668f39ee6cf1e34760cf9e. 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/SE6SA2433168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x475e9875c33d1b15f156a09696aebd53048b384276ee9266192a4333c9468174. 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/SE6SA2433169.