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 0x6223008d2fdb23b060b660e6899344d5139cc73a984b27aec55677edcfe40955. 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/822bc04d-ea21-402f-a205-d619fe20ef15.json and https://artists.proofprofile.net/proofs/artist/822bc04d-ea21-402f-a205-d619fe20ef15.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 0xf9baf4db3f3892f8a2c92cb31b158a36a12f563b2624edc7f3219a09386b4e20. 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/QZNWW2036548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eaec069dd492072b8b052f64223e2e80b8b10d76799859a8861cc03aaeb955f. 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/QZK6G2105184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x152a26b19c54e39f9a364eb9ba1d934ad5ce11166430732a4a658a99e70d0a2e. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:15:50Z), 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/QZMER2168886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d5028a30d190a9aed8f3e3290d3296b8ea7812b345e22b5dd9c16a72212b939. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QZFYY2238575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c39de96d3c9ff61b7c1ce6b1362deffe2a77de253f345409ba479b62a413b2. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/QZFYY2238576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x990685ebd82b596cca95a6d3b73f078e1184680f69cbca1d751cd132478450f7. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZFYY2238578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45697e7f5bf24ecf22714be4bdfca099b98dd3a9a71e306a695d3f7b7550628f. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZFZ62296735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a55e2620e145908ea0a5e7b50ed70f00a98225e0d497a2b3c628f8f0f2785b8. 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/QZK6Q2244181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa5072d2740e27eb82a6c10be2f519a62cdedcdd3aa5a85c1084c6b3863c8b1. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:46:21Z), 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/QZK6Q2244182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8062d12426203631642693b77465a26c2d85e38eda78b19745b34c2541288584. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZK6Q2244184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dcc9273697966db1f737712e119b237cab764f88ac7c58c46c25ec8b6a66b41. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZK6Q2244186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea05ab0b114dba343852d200de4948262e1b6e8409bb25a3f07e3b6b16b5a569. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/QZMEQ2219228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb12d987e6d597fb0f5ae1a2378c6254b60389210dbe8cbcc5e43d58361d2737. 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/QZRP52263304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b8d84f4be8fff6f93c13f015db7f20d448c4dd831d7515eb009e6229644a79. 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/QZTAZ2215875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4725d118c06511a70ea15c2d4b54d76f63d37eab04982afd16303496e17268fd. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/QZHN92388287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd80f8801b75743f473592e4738020e18e3acad9078a61b418812f85f0681a1a. 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/QZK6G2395200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d3e6fc80c9037fced715248cb36f016a150850292202366619ffc5e8d40f553. 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/QZTAT2320985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f966345e6012e8da8aa6d514e9b7422d7e1c2ea580172e0fb71b6db89606daf. 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/QZNWY2303019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13cdeabea83e54b654e1ff3fdfc96f49bd48b63e87441fb6d4fd883444dfeee2. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:18:54Z), 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/QZNWY2303023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3dd576bc68fd69dbb1fdad70c517f014be1dc449f54c1b7ca9b287dcc4c52bc. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T19:19:34Z), 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/QZNWY2303027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c02ff255151ea7368fc738c72040c24cf27c610a1cff8567b9f294286dcc05. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZNWY2303028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d57b2c4a1d6d4dd54433ec324342040d0c1f7d42fb720f8909bd35c939a9aa. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZNWY2303029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f7f312914bd7fa866892f399edabb26bf3ef0ddc4c5b75a36bef0256299561. 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/QZNWY2303030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfccba4a1b78e066963397e70da013648d284b88b751be6ce084fc8a7df5d5fdf. 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/QZNWY2303032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d7ff88d43d1b21706b25634a678ee9eee56f8b673759452b090be28128ecf08. 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/QZNWY2303033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82df3f9821072bb78c14263c671facbc127466a60ce473179f7574e4a320ef12. 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/QZMEP2441325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9925b08d6f5d53d882168152ffe22369eb5b56c63de93e85beea4fe072029f6a. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:03:41Z), 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/QZTB92457994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa736e92e029f05f91f720978ef3b4c184f3123d8faed56bba91e35b0f9c7341f. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/QZWFE2457871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x867d142cb8bcde93ae9fbbfa8ec16556004783e8b8c3cfee35320d063124e894. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZK6F2552927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f6f2154c8ac87198fa20d701625408d932b205fd8fd16bd3617a65bfb174ed. 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/QZK6F2552929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb61be316f57416d7a56c0379fe8b111477e7bd7639984272889c1137ff699f06. 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/QZK6F2552930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d6b5cff39e90add7645563f85670f4c0ecf40705cd82d70621eca8b3abd186f. 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/QZK6F2552931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa4222357246b1df76df95b0ca5a02b249a8496417ca6c55956bc8f49e78d60f. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:02:38Z), 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/QZHN52536914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe815a719b35e3e418a4b25260be4cc49cc592ad5bf722574763d4c7b492a8f52. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:57:40Z), 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/QZK6F2552932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64bf8b8919d2c73a2e277c0599e8c66976673492677f5033ef9101e5556fb4e9. 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/QZK6F2552933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54ed53f648c8fc85e647067232718c910ea9ea0f9298b5a2d3738db794f0e057. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZK6F2552934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db4e31348de1989184447ac0a9dd76d2a4cb7338c53389fe774a0feb2d26557. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/QZK6F2552935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb61be316f57416d7a56c0379fe8b111477e7bd7639984272889c1137ff699f06. 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/QZK6F2552930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe815a719b35e3e418a4b25260be4cc49cc592ad5bf722574763d4c7b492a8f52. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:21:40Z), 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/QZK6F2552932.