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 0xec01b64ee913294b2571b4dede7a4dcaac56337534d2d25d2f03cd03ae7b9be7. 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/7fa38be3-82e9-4712-95ff-d200314d1ea4.json and https://artists.proofprofile.net/proofs/artist/7fa38be3-82e9-4712-95ff-d200314d1ea4.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 0x9c7ffc4c16fdbac787bb0446a8ff3c225bbead53d2da98930e8289699825201f. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZFZ72038057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3675c70ed79f68ab0dd4be2bad81efb07321cce2b1330485d300a04d3c051f78. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZHN82002956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32db8b396320d6b692d84cceec35185921780e75603b589643a79aefb36e445b. 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/QZHN92056241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde434b97a60edd5281515785befe01b2b38b8b11118d1ebf046daf88ad9e6229. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZHNB2028834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f9db6e12656349b19cd4392010773f8da3989309771eebbee366eaa72a85d0. 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/QZHNC2007683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf593e2805e3dda1831d4808188b28ef405ea9e184050bc7d16bcdce647ad74cf. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T11:26:01Z), 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/QZK6G2022388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1420ad36b86299420a9617723186830a27f2555a5a85772f2282286efc4b12. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/QZK6G2023185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff3cf79fc5839bcb36abab0312540ad3675d6068ef71f7e2b30596073bb68142. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZFYZ2126224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43323e405a2057eec88115711d1cbb9a4f6880c755ed07a02c28fa73c306eead. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:47:56Z), 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/QZFYY2169720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a1ee02008bd73708cf122f3aab359a0bf9c1971a4594fc9b5bda2d8407362f. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZES62176336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb55bc90b5fb80b8424c88f09c4c1a8f175371a7aeac13d01455974909da9260. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:25:51Z), 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/QZES62176337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x417c88807dc21d3a99ac708a76e7624d702ebea229a884ad6e9838a4ad4593b1. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZDA72163393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x467863b3e02b5f53208ccae0a02b0a419fe6630e001de2642f3be1ad69d70701. 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/QZES62176341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d6e5cdb4a63b93a8179d0335951aa02e5353820a45184de3613a5ac15c896c. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZHN92128728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa222da184e1640769d5f04ea10c8f7a2af9c48b25bfa079200995f854dbdd17c. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZHNB2152704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x123371ebcdb0361eb51b6eb047e05a5b51e60b6980a70900c93cbc482eda3026. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QZHNC2138808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x722441b2b20328f1227f8434ea12d27c3fb5415e83ce3d821b175a81513acd97. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZHNC2140295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f26097c4d9e513977e21fdbffa5e64c7dd5436359757790730c15f134dc3dea. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/QZK6Q2125983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c8d46fb0a5ba1bde2fecab2c267265c2582059ed82f7b0bdd3dda6ec00d2a1a. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZK6L2150621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c1110886e60c9605ba4aef4b3fd225692265828bd40e435d08d753b222169b. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/QZMEN2123250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e48e1cbe5ef624b459e633f64f477a8c55235bf224c8fcdb89c8a679bdd91e. 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/QZNWW2131818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ba0b3c9cdad83daa1ac82673211383ab94a3293ac5876c88693a16d0de1a9f. 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/QZPLS2113355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf468042b83f89ac1e4bb723c6f9bfd21bf9a28a2854dc80db90fc5b9d75332. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZFYZ2284869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f7d96bd1fdec714a855949a2e7852777e0d6b7a9905914eb732fd273a39548. 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/QZDA42258046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e1682949e2a4ddc966d31c01e433a7a1d4cf0ad3d5d62ba220b97b2016d386. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/QZK6L2252777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeac4d2ab841f2a0f20e9a5c596521d77ab7ddab6ed2738d77a10970f0969160b. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QZRP42316771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8f6cb0befad96003054dd068bf39629c9dd4c01c22ba641436bd2f8d157441b. 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/QZK6J2430137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4803fe4174a72e21b8aaa4b7797aefd8b019e8c35feb711a88bc4701ab7bda22. 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/QZNWW2443455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f7c97e45f1f722b3f58a8e8769142daa8ca541a477a77053634cb52e49eefe8. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZRP52460043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4803fe4174a72e21b8aaa4b7797aefd8b019e8c35feb711a88bc4701ab7bda22. 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/QZNWW2443455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x588c0d832b2ec0155de3e79c953fe9a5194a50b7b489fe71f7e4fcd13566e79b. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZTAT2510076.