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 0x2d5c6984f8c72e706d20680cea048bef9a08ae3c85d846b7b2d177efd10839e2. 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/cdb3769f-4ea8-4705-a27f-5837bd158791.json and https://artists.proofprofile.net/proofs/artist/cdb3769f-4ea8-4705-a27f-5837bd158791.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 0xe3651869edc8866a05acdd435c8adf1b0062cf377092c25bbe0baacb516173e2. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/QZNWX2218757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf0def445152c8aa431ba3f98c2a7f0bbce377a9ccaab1797787b331fc39349. 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/QZHN52349736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84fe31af6370b2bb25c38f682b5c8f9400905162a8a49b8a85b5658cf64d6597. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZNWZ2379845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7514b6a6e35cc0c0a12203434b9020d31dcc33dd03ce9cd85e4e76df7c430c5b. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/QZWFG2300576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fcc86007a972f4d16ee455424ef126383b13bc4953004de96a7a6d62055d2a4. Chain 2 (Bitcoin): anchored in block 958963 (2026-07-21T04:02:02Z), 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/QZWFP2386387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e9e012cb8817307ffee397f8dc907ea82c6025d0114598dfc309e06e709c72. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZFZ62446081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63624d8b29421dbd119806d7965df65620b4561f16c6531842542c4004ea7e93. Chain 2 (Bitcoin): anchored in block 958493 (2026-07-18T04:34:53Z), 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/QZFZ62446086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x902d31566e2498cd1ea5a69cf1c81c6081b369485409ecc462b301bf6f70de85. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:08:20Z), 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/QZES62425642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a39fbbdeb495531748b3a1da1d710bbff1695c4a0fdcd52cb6d960f4eb842a. 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/QZK6J2444856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c05d2f188c75e8bb42a474a39310b1110d18d274fc4273d19fd22c0b67b1f2. 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/QZNWS2459593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x388d400ee2fa64146f617956558eaa814a6d5ec3d980e36d68883c6355486088. 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/QZNWS2459594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa30d5fc9e7883568794432bd4ce677f1192d4e357129bc08c95e5ad33e998165. 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/QZNWS2459595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bac52fdc09645cf05f16ced7865db43a375b60bb5799435ce385eb98a29cde3. 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/QZNWS2459596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88509d03d66ef96ad665723c29c2e902b208efe68f2aa8b8dcb0373d2c28b4c3. 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/QZNWS2459597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06122d2d2cc002e44c355d43d3e030458c56cfae80805aeff57c20635614c612. 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/QZTAZ2433329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b9ed40aea440c1d1a74cb78f0bfd238ed32323422d61a26f661b2f4bae9f942. 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/QZTAZ2433330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61db167d471510bbd03c4840a6d8016c1fbfc290c77f25a60cd8da688055ff96. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QZTAZ2433331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae20a6833c3b5a27b57f1753757c1eb9701592eb9dc1a3a1f1185d1dc8cd2330. Chain 2 (Bitcoin): anchored in block 958493 (2026-07-18T04:34:53Z), 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/QZTAZ2433332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x583da82664efb8fb7fcb8b85d74e97e45c01e1506232de0af2d0c9c918259319. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZTAZ2433334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df7001491cf920c4407051343d8e86d79763a750164636ed488cdebd596e551. 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/QZTAZ2433335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda82cba27dcdcf056713eed06357a49b4c42e153cea9475be60e1ee3df5c0136. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/QZTAZ2433336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3000da11826a569e1737e342a000d9047f2ebb23983e5974c6960139cd8c2e92. 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/QZTB92494449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16fe7e46b04c60b5741f4763b1653c0d0cce0322449da4305a0a9dbfca66bc2a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-20T12:17:43Z), 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/QZMHM2453732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce7f9434781b108dca9c03eafd2e99674aa82697afa43033000d5a55428a105. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZWFV2471087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa03f41ba8a8a3b385537d91a0f876fa3f33b4c2cc2e4e43ed824ab9417f62f6. 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/QZHN92490492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94cd9173cabc3f92bb64103b42eb7007dde6869dd401aa3f6661b8243b6b5358. 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/QZNWV2426063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fe8e1b5a6d1cc897a0f63be62a9f182b3c2d5c13646bb468210097e4eab9afa. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZMEP2485082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b84e70539449cd762ad5c9432b6d5224100299bd0f2c910462350dca8c8cedc. 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/QZWFV2471088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe64d93d92dbe984e6747f3afcd2195d83cbb3575a621a3fb00c10e20fff8534c. 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/QZWFV2471089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3000da11826a569e1737e342a000d9047f2ebb23983e5974c6960139cd8c2e92. 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/QZTB92494449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a5f44ffcbeca63720ecf2b521c2ae8f136beac524fab4de47520c4ccafb8ba. 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/QZWFV2471090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x986940abe2d2c17dad74b5cac68eb54ec9f24e2381c75afa189294308f99944d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZWFV2471091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b1f23f96761fd0971a62d2ed154a5580ad7b3e6abdb17eedce04c12c3917a2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZWFV2471092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf0fae6094f5deb1d0a138de069c0e20798fc81ba26398681f5fa42be795bd02. 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/QZWFV2471093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf15763008d9c9705c0b75e6cb2bc91f446c3dafca2b2cfc442ad0fc6659ee361. 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/QZWFV2471094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa47c16bbc3eb0329d923596faf1abb93b8ecebcd57128435253a44fa6b6eb9b3. 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/QZWFV2471095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4466831c009d7c8327fd0b0ea760eb1ab741e48133fbbaca59053a8ab2bc25c. 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/QZWFV2471096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82811cba7358b864668b54f33e8897818e54cef1bdccb39fb3c685e73aceca9c. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-21T17:04:28Z), 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/QZW9M2319479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0752f1b0c2654c75aee97a7b9f63243771622ecd520064b88a18f7cfd5672ce0. 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/QZTV32406936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa43efc54a300086558f534adb054b62592bc7333e450dc5524a5892ab458a6e2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZTV32414504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f53fe096c266e6c331eb2b0b37848f649be7f2ee337fb829394f3356498f9a. 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/QZWFG2426780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x370fa2be1dfb67ce86cda374f427b62b16deb239ff7d647e22979babc94e27c0. 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/UYD802300010.