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 0x11701c707b160a4211059a82bfa61b4b7c7eb0a78b4d7ca280f0f2713e9dbd28. 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/99ee4d54-839e-4c09-860b-66f20ec3226c.json and https://artists.proofprofile.net/proofs/artist/99ee4d54-839e-4c09-860b-66f20ec3226c.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 0x7cbe4926b790bc60dcda63d982618c2e07c21c03efbea6d9689210840520041b. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/QZDA72279769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a2d902eb3dd60c3297442156e0c48b883b17ecd91142647ddb15ecf2abf2dc. 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/QZDA82223020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83ec93066b9b21802b7aaf8f0ccf28fed7b77fef4745c70f2a87482f48a3d623. 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/QZDA82223021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3dd96d0467557b71bc1563e2822b9658b503a1b5d8d0003dec0292c5e13be81. 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/QZDA82223022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c97019af15ac8dc1f38d90bd720c75b1c1cee5b7effa77e4d6840417158489. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:47:00Z), 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/QZDA82223023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac5cc2d2d1f4ca0fd3edd7438416d693f53879e0c956618912ed7ef30db4a90. 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/QZDA82223024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf315086d3408fc0595cb182d0a767839f798dc901a9a115e663be781cd6cddee. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T14:50:45Z), 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/QZDA82223025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c0ba94cab6aaf5bd30481ea0fe69eb96281da8b896613877684d9a4cbce7ae9. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-20T22:03:01Z), 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/QZDA82223026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a2fe14981cad462871f909d013e8196455552fc414ae42e19998c99f1f7a526. 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/QZDA72295030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a8c7f305540f06cc45f0b043c70a0dafa9a0475b5d77655017a0a0e343b651. 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/QZDA82245015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x780a2bf79c9ee0df2527e77b598cfe6d9fa6d06b68f4b9a0f4ef3b88ce096395. 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/QZES92217122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b2c50e01b942fe36d083d14c1f24b91501b11da983cc3e0c031d81e7834772b. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZHN52215371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc99d51982015836c70dcec72272af732e721e7a9a2775e84063d6d867f71a0e2. 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/QZHN52254912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1657c719f18e23cf0ea1c044349d209450cec4c0af503cbaf7a62cce2466cfe. 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/QZK6L2284694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a9096cce87f8a82c3a7c1d0c172164128934080cc3132a05da0f2df83d9cd2. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QZK6K2228936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x317c4f2fb442588b033b66e8f3cceeea408fca2a6061287cd30e1947e9838263. 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/QZK6K2228937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a2fe14981cad462871f909d013e8196455552fc414ae42e19998c99f1f7a526. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QZDA72295030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8dff3e2d37b6bcf473f4d81c7246c373ae8dbb1b9bc4fdb03e26e4afbe2e75. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/QZK6K2228938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd861c8eb4e72e2f3064f49ab8e3fd576110ce234486b8ba0a8ada08a911d43a5. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:20:14Z), 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/QZK6K2228939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8f7975249f9e5f17182895cc9b4322476aba10310ecebc51acfed6719be9385. 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/QZK6K2228940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff18367ba4abb166e07ee31bb9514437151576364a291d9acdf807317a636e57. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:34:52Z), 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/QZK6K2228941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x942d58e6a0f9394874b634688c01048099a578cad5b55b915e135bd75f893b04. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:48:33Z), 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/QZK6K2228942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e0ff452cd4207232b97bf679285d5786f819ba1007b1acaf3f7744b6f068613. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/QZK6K2228943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee88b5916e18dd2fabb8d25c581b75ca2a8d5643ff1c103ba2a8c6f895fd2a8. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/QZK6K2228944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd859b16e7e6cd6681901d5e4e7e3c7a4fd86a16d0812d77f9e050113179f845f. 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/QZK6K2228945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7478e1356d21edd5155defc9b058a414be5744320ed2210b4732aed0252dac49. 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/QZK6G2201755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13660efeee43afdce3fc3f6eb9083e665c93900719647f283806a9aaff289c59. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZK6G2290819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f607d083e7f523173d2f1d0de800063118c753d7750a2c78bd6b9a8c8eb7c1f. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZMEM2234310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a6e67136ed7bd413038e4010b2f3ff4d17b38c87fd75df9b97c9d3ede6f0e15. 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/QZNWQ2292301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cfcaefc1c623b09b20cd91d5dce59f198f3aa74d58e4251a6fddeea3fa00452. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/QZNWQ2292302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x872596937950c513df08dbb44314808485cf6e4773bc5dc6ce3ea6f19cb84378. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/QZNWR2261832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d56d29b89467caacdb8014f11e1a513fb164de9b75bdacfd07ee72e32f8395f. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZNWS2287054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x670282f49b5f40f3a5377fc28b8b844403c186fbfe7d3a169f9aebba0fe4c00d. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:42:24Z), 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/QZNWV2230412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedb2fb5a568eebf6d74f428c1d1d0bb7bdb027dc9674c5e8357834043b511df4. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:40:39Z), 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/QZK6H2378348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cdc8ea4bf110ae7c4be1a34bf7c7434160b91ad9b946f72e5c51fe46921a081. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/QZMEN2304412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01250ffb617fb1d662c3786dcd6a7ea73c4d2a6d59471aa31a8ecc26fc0bad6a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZK6J2484341.