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 0x57baad5cdace6a4469fd69e3f6e19c43fb7498820b55a5054faf34bb527e4a9a. 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/fadef4f8-3b32-4372-acf5-8ea170829fa6.json and https://artists.proofprofile.net/proofs/artist/fadef4f8-3b32-4372-acf5-8ea170829fa6.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 0xe009e33ae22079c761ac5c5b13a11b1bd70419c99b156dfa6fd728075f73098f. 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/QZFZ32150730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e26fd05b2cb1eb83a6e1bc7c9c14be5f19f027cf978006eaad72206400efce. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:23:56Z), 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/QZFZ32150729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e56853b3745af29e0239c755c01738375b48797811d21052bf29a5850582eb. 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/QZK6J2127725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18f45c033e84cc8f7f8c833c97e0db91d07a2631be6dbe3d891ab9d3ac377764. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/USL4Q2098264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0096fff3a47463d41efde89e1a73c52484241d923a5f8835ad2bdb718b3d48fd. 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/QZHN62130471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8733c158da541086b12fdd6aa43f1b1275ef5e01db251f3bf24f40215daeae85. 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/QZMEP2123568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9350175a2c84b092b7f9a55d263f54d100982f802f4705dd81a35ad0656b9ded. 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/QZFZ32184717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b0586aff559bfdf58ea3a4c73e676ca1a347c93ca4eb6c4a71662ed34e0e67. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:31:06Z), 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/QZMEP2123569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x348a34bd85d1b708823461df7395a117d09f3ed50e20353617f90bf7d2c16b38. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZMEP2123571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80d75841ed34bbf554fd9810e56b6be119d95c565900bb5b36405baa0ff10a5b. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T12:59:40Z), 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/QZFZ62201406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8b053a1ebf2bf874c011ed491acd3dab32441be6172bbcf50bce2813f442892. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/QZES62264658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57db76aa1842d2608b47c4f2fac2db8a466f8f79d5cb92169a516d6d01145dfd. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZMER2254428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x734db31449a782f2d679ac832c54a2a6397674dd5bd4b04cc2fabcf59af6b3d7. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZDA42365554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87e4dcc9f1c3f84d19d0826445b9d2a9be76af11973490f42247201af030452b. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QZDA42365555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeafe4f103d6a973ed96c4b17bc8224c7c6886a4d4f23642a11e978cba6670258. 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/QZTB92251862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb80cbd3bda9cdbe50b53fbcb69baec73ac5de3c931c6a72e26fd5b832708d62. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/QZHNB2257198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82eb40e8bcdf4fdc785d54fca7786169ac0fea564f13e3daa8a4ac7bc62257b4. 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/QZFZ32316719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x688ea4666a8f4a3210eb10e6ace72e2024fdb99181cef3c9f3b9bc1e1664eaa6. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/BC6DK2300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc6a1c38f4d78e0f99d758cf03a8aa47b580e8a3591e7f8da520f2dff01f1ca. Chain 2 (Bitcoin): anchored in block 957531 (2026-07-11T06:55:18Z), 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/BC6DK2300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d98ec36c87ab28bce5a8237fa6d32a2b22c3bb1fac01f97a9a48cb1c25ce191. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/BC6DK2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe281cac0f7295918916ab367f50b4a628d602dd36b4de2c04248d7c454321d8e. 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/BC6DK2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f3d76ce419e8ff599d8c644c4c0850db0bcae8bb222872587a8b7581218de1. 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/BC6DK2400011.