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 0x84c29531f875cdd0b196e33a8bac91ae98cc2b6a0b9063791ca653922eca156a. 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/97d1b39d-c454-4c38-ab59-a6963c023c07.json and https://artists.proofprofile.net/proofs/artist/97d1b39d-c454-4c38-ab59-a6963c023c07.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 0x1c115c876937507cac69c6ef63f13d487ee1c4a8f0e4374c828396994a02f03b. 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/QZRP42160848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bf8bccd395d51f204a347deae38f80cc99d0a3328fbe5ca6b4550879f44c2bb. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:19:02Z), 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/QZPLS2177328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedef1d53972788a16cd70137eb344a2338ddb7e15e18ef0ce9349675c11c21ad. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/QZRP42103000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9524c0fda54d0382d6de6c859db95d5286a931b7963e878247e4d772165f6ef1. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:15:24Z), 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/QZFZ32207914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc530676de066cfe1834373e4d9d16ebda6fcaffc75cd0a43a6d339c07fef756. 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/QZDA72241593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aacf82846a65f1a8771ad91006c8f2c7017556d888517e5f693f54ae7bc7f56. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/QZES72277094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da0604d9943406a64675c9677fc2131a94eda284714224e2d414b1307ebeade. 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/QZES92219734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57208724636b6e97b673b81872934e68b7c6da939c757142e09b59fb1f690e8b. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:11:51Z), 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/QZHNA2256558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b4d95a9728008e11b0310752155386bd4789ca76cd880d70020dad050c7cef8. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QZK6K2286303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb090838f8f3bbb07804f45d83c3701c66ae6d761a75aa7f2ab8e9f5b0e8b0a98. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:04:59Z), 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/QZK6P2371556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf69fb1be74ca96141462131bd0d1b29daf557882a8d597a5365e639d0375e279. 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/QZNWV2317729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b8150e5f127c7a37a6910591aea9c920221d82d7792d615a55428fe7df43a1. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:38:45Z), 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/QZWFH2329690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ef675a4d29b9e81e33452309abfde3d70ed98cae77e71aaac2765d8e0d33e3. 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/QZDA82408891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x968d0d5432db578b92b3ebf56b83cd1b421b0f88161ee1845ff4274c1e1e6757. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:35:35Z), 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/QZTAZ2436558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ed9e83ef6027aff6829948a6516dbf52fa12a2fda40c98cf523e9049dee24c2. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZZ7N2416890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbea5d995c29b607352796161471d7be1dd98d17d36274acb0a20f1cb01ecbff5. 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/QZZ7R2464402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe6eb1a0b993cf7dc155be54625b16e6c543edb47fe146e1615d72ddac9eafdc. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/QZHN32505588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b4008cfa826bdb3ea33de410cdaaf488c254c61ed5abfd63a74032963998b4b. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:43:20Z), 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/QZRP42545681.