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 0xbb13da66c2306bfd0194b69fe4e02c11743bffd3d29bd219df231da80f8364a8. 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/78c5ad8c-e953-44ca-9b45-bc22d16f02cd.json and https://artists.proofprofile.net/proofs/artist/78c5ad8c-e953-44ca-9b45-bc22d16f02cd.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 0x2e81f9bb9fbcd87ef2ace1fab73aa7e2940f861de52c8935219d83e54c03697f. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CHF032413463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb828c5dc706ae22f409717110e3f67bd267096e6704297b32d754ddcfd58516. 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/CHF032410945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda2de75c79d8b1edce341dbdc91f0b57d4cd11f0325f6b76ea2112696ab0f70. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CHF032403769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c94609631155cf28d7eda4ed7b498cdd1b2561cb73e2eae137e69910ef47f3c. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/CHF032403768.
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 0x65193be2c2e831bce29d1e1d38a3d7b767551830c177f0427316e099fb4f1461. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CHF032403036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4885c7a33f0cd0f59fe75f40ec9083265378e4f41994766daded8d0a6aaa766e. 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/CHF032389582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4de797f4104ec249466b6ce6b606d041090efdcd463743965167cf465ad0404. 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/CHF032370655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d8ed0c188ed35e295831935f166bf037790c671c284588c78f15330cf0eb39a. 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/CHF032350649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f061c47cd8e209afa31ca0c70ce1ac68e03534bf5f8876ddd6b10013943feab. 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/CHF032277633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1385fccc96c1856580641e04417091ac7919398f9ac1de13ac6bef1576ff88ae. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CHF032277634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c9e2461453842ff4b6c3241b8b4b99c54404cacf1d8711e3d09aed2ceb3371. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CHF032277636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe883eae7fae4135c07a8d83600c83f64fde63ee0473fdac0dbeb60203609b38. 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/CHF032277637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc8637d16e9080134d69f31221b16a2338deb4560b9550aad69a8bdbf156c68. 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/CHF032211488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c8f0a25a2be5f99628f5bc081e5e7ebaa30bc24cb71815138ad3ce487dfb7c. 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/CHF032200305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x397618cc28767508d606550ec15200a8c0147dc376b26277e9f6ec41036e7fa3. 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/CHF032403890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f5e9b742c537b42772ea4e652aba8037217e7f47fa9db930fd3c6adcade2f38. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CHF032508189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde36ed7798f258f85b8b4150c815b906266adbd6922dec4c9a7f6a8ece1b193b. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/CHF032507147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3022286ed51b1cd094880c470ec71d7b48601d66bc45dcb1189d36a475987b60. 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/CHF032505932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c6032ca1c4c116c41f67ff6abd59f5fd1cefcd16a67b44f7e3a300df2875bef. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/CHF032505931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec0702657d23e39ffb5d5a49ff8bdee7d9af5768e2ead321957a993113ee948b. 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/CHF032502086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5901fb94516915335efb70ef1b0b5ea100d8218c91b68c2cb3765ac5f6b017dc. 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/CHF032415325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff80abb92c06b762e187120a079524d6e5ed9c9e29ed2296fd324462980e3178. 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/CHF032202276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2348fd0a555e0fa884799577d7809fcc256104fa4c084d98073e78812022d0d. 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/CHF032202275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa986982d9f58837d8d2625055e4a9d9466144f8917bee9991808286deba85b17. 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/CHF032202274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ef29237a9372b78c1bd9bed22326e8ad4f861564e727737a4bdc5799c612d92. 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/CHF032202272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4048470b7adeac339522b1ac606770aa7dc5a0b5d7091e23926f3a747d7e5a50. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/CHF032202265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32cf31e81a3058324958881099d928ba52bf2e8fdc44658891b76401400bb0dc. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/CHF032406215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7254741604a06c3c1a69dbb2361bac1d3cbd53dc9c559d77a5c61d8b9407a2e. 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/CHF032406216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab807f96386f037b18a3f911a1afddef8021d3454ac2dad91cc632aecdaece3f. 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/CHF032406220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf31be2c7307059b981b4584524e649f15ea9c894e5370126fbb43147d985a803. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CHF032406221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3586650430199e9f87dbeb83e488467a74a9772aec09ec5509fb90200c3a0151. 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/CHF032406222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f268f07921a554cfa9e1ff9cf7a795371b8b308c6a6bed64c7bbae5e51930ce. 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/CHF032406226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd2f4f2b730e37253c9cbbc3699ee858f55bf137c1a69e529c221fdfa304c07a. 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/CHF032416657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4088484183e2a5490153059a3e86ad9ad6ccd1b52f09a9c5e677b7b58ddbb12. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CHF032416658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24b8343bcd04476bfc1ee0c89b12ff2a91f50ed09af1b2ce8bd61876ef2dd894. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZNWS2117243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fc8f10c267a3cada0a585b3cb25b1e0d45ccce51cf3360c7783f2a4578e8cb6. 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/QZNWS2117248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f952573ecbbdfe58f958f578c42f5537a71d7566a98cd73cfe0db82ef0383ea. 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/QZWFQ2364028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b3431823ab7f34c884037ee025ccd70917b4bec07d08b368e500ebeed3876e. 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/QZWFQ2364030.
Hoor (From "Bobby Aur Rishi Ki Love Story")