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 0xe93c7f07d4980c92d66d377795bdb14dbb3639ee6d83771915463cce994c477f. 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/375b96da-6579-4f5b-a045-62c170df8126.json and https://artists.proofprofile.net/proofs/artist/375b96da-6579-4f5b-a045-62c170df8126.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Old Enough to Know Better: 15 Years of Merge Records
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 0x95b3590ac75ccfe84f498739d75f49d4d8143e40a00e737c6046e8f60f4b1b91. 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/USMRG0316001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x278272454b1ee14cd3f117f904d9c2801443bd742b88776b08c7347a188a8a4d. 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/USMRG0340011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac10fa6d4e4c742ce759a843fc59fb80b12f80eed1164666f3834fd10e3a176. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/USMRG0302006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ec11d092b9815d7c220fa16d543a1821e0f52d5838fbb259bf56fbe028fa1a. 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/USMRG0312024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ab711be2715526eafc9a54b847b33cd244d3a88d8e70dc9f9d5ba67d0d6666. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/USMRG0304042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e9e0a2d31eb9b8db44311ee7ffac202c1b03cb499ad76f0ca45982a04a0c81. 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/USMRG0360007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d44e1257fcbba5b94d60f4a6011f1a522fdc7335ac3a8e640c6fba871ba4bca. 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/USMRG0301009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e6527c12b719f92f3db783e7791e5b919a1ff41c8382f61eb5529d8dea0059. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/USMRG0307031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x301b31b6fb4a5b5896fa532fb5b2ebea4a8f3839c00beba1fdba708d4bc39fc0. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USMRG0364014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc6ec78726d070b25756f02a4c54d73eadff08807e518bf21c5ede0c1fd5b76. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/GBFXJ0300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd3d631d5005953847594840d3cca7e095b5473c49746ccd4a6458c422e00be. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/USMRG0346001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cfd870dc25196308b49ad183b0ca27679ab0022856a98f9d7c52019ddafc9cd. Chain 2 (Bitcoin): anchored in block 960355 (2026-07-31T05:49:18Z), 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/USMRG0341012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0851506fd092c186871bd9c91d6489cc360b33f5688d9b3f66612ee73fc89891. 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/USMRG0313048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x462839b8e2632ab0e35e495a6d84c7d36b66df502c83a6644bdb853592464181. 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/GBCEL0100210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabdfbee92ed25a7cd5c3dc8d94839a445257c556fd888da48802edcedfc47354. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USMRG0325029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfad372d8f1d35d0a53542366e362b82a43d74a429201a97a370f686439baa9e. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USMRG0343008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a3814c1e3a0a47ed53b61a8d10a85cda8c04a72ee603a6f050bfa7c7781d8c. 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/USMRG0345002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dee77448f990fdc03d7079be5c2bee04fd3843e7bab8855ff5e8489a520a02c. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USMRG0319085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a67f0b47b4387075148186c4aa2ef2cf0b6d6731eb4e71078e207d210061cf. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USMRG0361002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2578f80cad54848f927941fe5c29608d5dc510a8e62d3b01039ed258ae61dec3. 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/USMRG0321002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d258fba082b1fa9280da7d1c4a27960899784b546c22940c54a37eaec8c1d22. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/USMRG0324001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddf29b794253d997973b26983c3bd2d020ccfc327c4d6a53c9a295581512b9cf. 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/USMRG0330008.
...And You Will Know Us by the Trail of Dead
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x191eec10dedf12ccda3937e11795d1b7371ce2b3760b830515c8a7fadfc32172. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USMRG0335002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e68a0ff2c91e7eed37d3cc2d373d39d815c99d97faaba0e97e7f6d6c9e5c146. 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/QZPYN2261133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd116be77871cf0fed3b488fb5692e32fd460e587aa48b08486cbb58059db4ff. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/QZPYN2261164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c9606e7851a11f1552bbd77728d04df9349b72cd33566cde47d5a07c85f6869. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/QZPYN2261194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc111849c2a4dd326f653cbae420f60e044da5b7a9df27e5839c599f202b45acd. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/QZPYN2261203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5d89b1418495e773c9380597c5996c6311c7b172791ed74eddf2f29229dc9ef. 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/QZPYN2261204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eec7c3138ea72c1e8bca59ab2297eb2833bb7b651eddf47daf9caaaf80bfc80. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/QZPYN2261209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1596d1772adcccea3ad213dc004bf38a2cc6ac7b2a37b1c2286c8a6e4455638a. 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/USMRG0350001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9da37d08d2652ff77cbe87408267d717b15747f44fae654a461c03f53c1c52f. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/USMRG0350002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c87b9031584529281abcd467ceb325a91047f4ad635cc7ef81434adee720097. 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/USMRG0350003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8bd66c2df0c8c4bd944d763a411ebb59bb4fcf71335f8f143b38afc0ab97a3b. 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/USMRG0350004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90149139ff0592c089985780f5fde66abd12e25da5b015975905c5e72dbc4349. 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/USMRG0350005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1945833350a7ca1b49eb20bf6ce0ea1451b2ae7e1611c59d290c1447f96e909. 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/USMRG0350006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c3e33fc5762d4d796e2fd1f7097455fede52bec1f4ed6f6337e9947b6b688e. 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/USMRG0350007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a72b0554d44e54c14356e710282dcbca5b2bf1b379d81b54aedcb55b249b14. 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/USMRG0350009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1e07ef29f6ec215563d231295d8f16ac8ae475472ca4cc3f657c3eff8a81bfb. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USMRG0399021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6bc55422260ab63988fb7a418dc0b1c00ed441c3aadeb495055748a9b921f62. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/USMRG0345011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb06cc70eb2ba88bc119e0592f23478417d85869d052c0ffd43879bbbfc7c82. 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/USMRG0328002.