1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x2b78100b139ab233de1b7f5b1140252ac3057308c706e04e07b570da651d18ae. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/523c7133-abf3-463e-a7ea-93c13fcb1428.json and https://artists.proofprofile.net/proofs/artist/523c7133-abf3-463e-a7ea-93c13fcb1428.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 → block OTSBitcoinBlock must exist at that height 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 0xd3efa45bb6798ea0768fbf3999b36b595a044adbcd2d35949e65e95e47a4b8a0. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZHN92365267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dcd789b1f7f7fdcfa8661cf20e6f58b3009f6904522498ba6935b579e33c5fe. 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/QZK6N2367540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x332fe1f6e1fefdbd0c2a344e614a46007eb27b4750fff938b2635d3dd834186d. 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/QZK6G2301654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b622b9c456fad1f5009ae63330437bd722fbde85e062ac126c171ebcd8392af. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZK6G2301656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x659289634104052a0bc794c2443977779b37af0871e9e01078867a94874d677c. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZK6G2301657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94aa6d5a37cfe5aed382990b306f3c645a02f9fbf499e0947d770587145cc8b9. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/QZK6G2301658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce7dca605113b6c5c8989e4230864f5741b3078467b6fcab557721832465711a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZTAS2393825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e23473ae463fcabe945671c80f2fbef253641a003ebe2df1792eb8a7d17fe98. 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/QZTAZ2379132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x379b385340f039b2cc3c1b8caf5bab5d41fd9ae9a1ea0ea2a90937fd8ba47ce9. 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/QZQAY2495983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x930ec169b2ecdb5f62c9c53c9f52e63ff7ba542e91ab9919cb83a2e60369cba2. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:41:09Z), 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/QZQAY2491730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x704d7518141e444b29b4d61be1b878ee20e7084cdc8fad387db798c7b96a8c9f. 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/QZHN92409506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc935afb82030c9287e2ad21fe512d48853e7ecd31573c8f2db41005077822998. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZQAY2403137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe36073366591ac2285806ee3ac7a6f77556c96e153733a6e08b655b425c0de4f. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:47:17Z), 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/QZDA62409960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ecea407292b04d2f6ad92a72f2f0dbc9e0b97a0969348f3d58a5b9429e117f0. 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/QZQAY2495814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x704d7518141e444b29b4d61be1b878ee20e7084cdc8fad387db798c7b96a8c9f. 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/QZHN92409506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcffd8836e9a8e681b6e65178eed2b17c5363433ddb54590178d0f82c26b4de1a. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/NL8RL2510638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec71fb655a4e20e35acce6963d61a615839efdc5b5d65fcffcef6d0b90a3bfe4. 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/NL8RL2533151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ebb5dce89b4c3bae83d38415a7e45b040496549f7e8de63ba9c10cef93eedf. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/NL8RL2533152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5d1ff7c7f7d71dc0dae4352e6b53c3bb5f4c763857deffd113dfbf954d4d03d. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/NL8RL2512554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a4657266c1cc02eb3f150d0ab48eab147efb0b71bc71ac2a5a7867220568f3c. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/NL8RL2533136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x296f5815afea9d3a5829a98c42b1cc535132d63d574e0f5eaf953a991ebfa50b. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/NL8RL2533135.