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 0xbc14ed55502074adc48b4dbae14c14aef6da7db5672617485157f2ae45cdeca2. Chain 2 (Bitcoin): anchored in block 953645 (2026-06-14T14:31:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3f8dc7bb-19dd-4277-b828-92b43f954890.json and https://artists.proofprofile.net/proofs/artist/3f8dc7bb-19dd-4277-b828-92b43f954890.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 0xcc6fbda0aab6d134c9cfeee7499627dca419f1df1a0adc876771daf5dc22da33. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/QZFYY2512965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2eefb210021221606f8952fc3b25223876f3f13aa3f4b2e759dfe7a6021f240. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/QZFYY2513018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c2e2efb6ff5548ab9353270a7abfe1ca0a12e825474e7169f4c80db88d0c82. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QZFYY2512979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ab853ab11f2cae2bc168d7b21fc0c33f924fa4d7397ccfa7b2497fc339cfe0. 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/QZFYY2512988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3d41494505bbbe485c506e92488dbc7141b530ec7fb455e8d51085fba7b4a9f. 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/QZFYY2512968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bbbe5326170c615305ddbc1657490bd2ee580c94328bf3aba405923172247e7. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZFYY2512998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda6b14812351f1d62e2ad6ffd538a568dbe3a8c1e1f68ab9d4a5fc7df0686c9f. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:42:53Z), 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/QZFYY2512971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9a6282ad832b736430bbbbba2256692dd9bc11a417c355c555cf31cf8b67038. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:31:15Z), 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/QZFYY2512992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc454f73e3b378e8678e764a35221568835af87509ad372117db441c0be8e82. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZFZ22572052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53d21e468e3a9633ec924b30b4841a914edeb59e3bd773aa346fb0137300058. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/QZFZ22572128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecff15d85f4fd8de14c5204a24a0ed2164a6affbadc3d26d0d94ee891ad6de10. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/QZFZ22572032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6976fec99d47c1277e432830f30be8906695923801cf469f101a15250703dbf3. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/QZFZ22571967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc525ce165c17497c23c8a1f11186927ae77b6daad8c8f17daff9122bb7bba58. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T07:55:30Z), 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/QZFZ22574775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x230cf3e7dadb7cb0c10b05c61f4db37d06ae67fbc1d826bad8bb01d984390871. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/QZFZ22578129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x162290b9526add5d3de6029261f832f2d02da7dc5fe8f10288658cd83469f950. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZFZ22572033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bacc69029e043320b149fe2bf46a016aa6290629e38a6ccb169e8d64fda87f3. 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/QZWFG2554777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d9c8a25cd1c53010ac5b60052d99a719b8241259ad68c205fc7646f2acd031d. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZWFG2533351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc03bb15e611fef698affd4d8b909928fa7fae0039e58812665298851632063ef. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QZWFG2531685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b925af9333fc609f77bf9d0dce724b7c6c3eb0f874997236078e2c79b294971. 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/QZWFG2531684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34eb6214e4b4216b1afc922c5a2bc26443c6dcaead4dc4dacb0cf91a5d8e5a09. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:40:40Z), 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/QZWFG2529797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d1b70d05a44817226699d8c5d1afe9d4845c9fdc15d3e3786174ad89315f5f. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZWFG2528097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f4d79a07c885eb43773cbb4891f427c5416ec7d184ecef578ed3dd54c671c52. Chain 2 (Bitcoin): anchored in block 958819 (2026-07-20T06:55:41Z), 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/QZWFT2594004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc71746693439ca49e14f7ae9e8903754de20b992bccd5759d8199fe87b3a6d2e. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:46:34Z), 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/QZWFT2594006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fea23963d95d3905a901622ca225dea38835d6a981bba98b994425ed2bb96cb. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZWFT2596558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa93973a3811812e5ed0c1380f3482e420e4cd07534943bf4a7befff81dc82e57. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T19:02:41Z), 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/QZWFT2596532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d82605ff8b197a5b89b18d2f3babadd75e50c829ac39e9ac26fea79dd4be64. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZWFU2501788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89facc253ce7a99922fd12126fd60919872734196a726a2f2bebd913fac3c067. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZWFT2596490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d784c65f281a6787bbf41ccbb4fee03f42e343ad4da25033a2b1e0454115f68. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:23:51Z), 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/QZWFT2596554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a7a915ac760d80f63f766f43d592653151bba82db4067deafc59d453f7da607. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZWFT2599377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbfb6b481cf56dfaf83f6d1197f1241653ba275039d3e2981ea205591f3a6607. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:17:11Z), 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/QZWFT2596559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5b6fe8efadbeba837223fe1f8602c61a41baf8475c936331c0c796239e1365d. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZZ7U2556741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcce7089a0a6c683ea52617b415d4696eb65a8f899975c0413e36f8c82c960e97. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:48:19Z), 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/QZZ7U2559420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe787dc252f40a7d4a3783cd615e9942598504c61597758bb47d4a82f3a938251. 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/QZZ7U2556743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e57b114db7f5ec988d9a13ec74de66a6b356058b317dd0ef93f7fb10d53b975. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZZ7U2556742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdde67f211539bfc217c51ddbb8d214b3692b4e670a40302a76f900549182c3e. Chain 2 (Bitcoin): anchored in block 958819 (2026-07-20T06:40:33Z), 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/QZZ7U2561810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac81e79cd0e05ee98dfe1b016a674bd274e3bd4145559f92459ed2608fce50fc. 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/QZZ7U2556744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ef054ec4305d3d98330bd5d6af67ae4446f85d7dd8b90a75a4f03880d7d627c. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/QZZ7U2559387.