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 0x4d254c46ff1adb710de93e034f2a7ad2f5d3a4873937cf44f7c6270853c3b03f. 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/400f8c60-8ea1-489f-8784-24652aa70f84.json and https://artists.proofprofile.net/proofs/artist/400f8c60-8ea1-489f-8784-24652aa70f84.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 0x1c111303da15371f608a946606d50a05e9cc1e5e369712fa029dc45de3c70434. 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/QZTL92426828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf35107c2dfadd1d62cd6d63e2993f3eb05cf3764d72e2c59b24852f29e0d1857. 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/QZTLA2406634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcadb734b55411eacec49b749d5649200879c325c95378045e21bf7cb9b59ff29. 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/QZQAY2450957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacfeeba3584203eacced12cce63e3fa271d6a4072a822fe9af314b67851daf25. 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/QZTLA2493248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb3c5e80908c4f461f531162243c0abed61a0ea2d860134b20556290f226151. 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/QZTLA2412057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bfeb546d0b9ef0913f66127f5e5f2758f23c86afe69850cdefe128219b42eba. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZS7J2324311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e936133aeb1fe96c48e8829345dcaaecda2336b5cb1f7306b55e93f4ab8adf7. 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/QZS7J2318255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f46c800bfba33a9b83bb1ed1ef435996ab86cca5ec8d35cc9d1a24a51e9211. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZS7J2304095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe03ab9a2362af632ebe44535e527f8b2d781a4ac11b2894aac84bcb804dd3e54. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZS7J2305398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51616e25efd43a6da17639b5801723824eccb09d44bb370e179500a44e98b7ed. 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/QZS7J2395578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1b1aed2043ffbcdd2659fd2b7e3fea1961d8e0a3cbf17786b1b3a19c74bb5c3. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZS7J2364338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa78f09155f1c9c312b7e7d306bb09851cd84f39ba71a3feb44ef596efad7cc. 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/QZS7J2301723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df8253baa7c04dc241ff887082fe5417d1233724beea20d32cb4f556185dfee. 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/QZS7J2327089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4f22554c4196cb94ae9bee6b051e1a3ac54bb7123fc2c73da257b2b9180b45. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/AEA3A2263940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4d784db71fa7d08e05bffb1d511f6b021faf3c2bfbe21df7d541e5166f9201b. 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/AUGBT2434823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c2ec5a8518099ba56ca9d8857576556523571b55e732f8636f83811ad888f7. 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/USDXS2401768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82da6f94f3f2117d7d78ea87b63206de84b69b9af54988297b6cbe7acc3c4ccf. 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/USDXS2401767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf901fa14b5623301206017c2ff44ef0482ee5f7c874f5030fa8b6b84a4081be. 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/USDXS2401141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd00eb285a89c60383f9601ace62efa1fa9c90e9f9b2e622ff84d5a82053d81d3. 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/QZTLA2476296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa94ed2950e1b5051a1e6e5cc9616febca076a5e6a6462e7af795518d656d62ce. 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/QZQAY2427148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e936133aeb1fe96c48e8829345dcaaecda2336b5cb1f7306b55e93f4ab8adf7. 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/QZS7J2318255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f48cc83060f6ab622c7f97d740e730a6e576e065f95b9716701ff9c7ba561c. 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/QZTL92329770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c6b332f11c70385b4774e6389c5b9828deff413865ad33059c81f7a5e9064c7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZQAY2308121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a071538d7b2e82f11ac32d293f8748dea05281bb284f96779e57c3817ea2a40. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZ5AB2381412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a2e48602e2a450c4f09bd0bd34f7fd931a3ea34b3073a9cb289d7bbbacada4. 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/QZNWQ2221275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcae3e64194f0d5bcff33e48dd030fc151e9d0ced93f475551896ac5787c3c8f. 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/QZK6F2236604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d17084b1c86513292cdf900217c796882f0fcdac144c0c0ef1dc39ce1273b13. 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/QZS7J2368262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3cfbb65a0af7a0036b8849caf6434bdbfb37ce035611279fd22a6f2c1327b71. 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/QZFZ22285312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4d8b6cea5c6ec6d5c75f9b2076204289165cde2f579714557ec65cc774e38ff. 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/QZNWR2159064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28308ad1c6524a0f957678cae8eb55ff9d4ef1b12f1e8b913baafd11aa16a6ca. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZK6F2104150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7faf22892a8d07982975f486ed82599c62ca86b40be3ba5f5be07a26c6235e97. 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/QZES82102068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f601676f9e06396b38468051423dd8e1cdb1234683b2eaf597c1ebaaa98de8e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZES52280709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f36085fa7cb0af85a10685b318ba9505bd53f626164ebace6bae4d91a08f72. 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/TCAFF2094706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4632634c33b7ec807024cfb81e5aa2fdda8c4150a73b12e232c83dfb555bb6. 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/QZS7J2347962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc4008c9bd1a5586f9448975d7ba390b96346baec50bb8401f0de69cef5cd8fc. 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/TCAIQ2414440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e6e9a4121f8a67b49660b8797f4364d1d6859b1af2b38abbaaeeb8faf81cd61. 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/QZAMM2242335.