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 0x42133efdf2ac2740cb4417730faabe50b5123c26b200c72be57c419f9ae4ee33. 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/218521dd-57e3-4b8f-8231-4b35ec54196b.json and https://artists.proofprofile.net/proofs/artist/218521dd-57e3-4b8f-8231-4b35ec54196b.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 0x9a2b3e98895dcd0efe8a30491b769423ee64acf42aadb44adc309460b881b201. 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/UKXN22537877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x292f41b7fb2009aeca8d21cc8004f1a37b553eb967805d304ba374ad69c826d9. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/UKXN22537874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda9d9865e69c93458995fe07109e64ed6e636d1dc14b31db2f562730583173d7. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/UKXN22537878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x949e02ee4b2603427d9cd01d90d163d164137c657479a692d4629a370a8e011f. Chain 2 (Bitcoin): anchored in block 956426 (2026-07-03T01:37:49Z), 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/UKXN22537888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15bc28aad9dac4a7ae4258a88f0874e3ae317e2788af5feec54a7088c5a89708. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/UKXN22537873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x966a3c9147c1e93aa7a8813c2baf40e90922d0a2a26936e9ff2493739d1d9244. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:04:15Z), 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/UKXN22537887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65e75226f2926b2de496da36d5abad5fcb8cc199bf0e74e93c2eec693af882d. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/UKXN22537871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2daf5750069acb44cf2cecc6a325a6efc00b05630c195c6a1f253cf5666e8c4c. 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/UKXN22537881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fc6f2f56578539018f73facd7c19e6d5d45bf7db2ad8f76bbcea5e5243eeef4. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/UKXN22537883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x094b234cb650505706c1dd02dd8b6fefbd6a3a989bbc2ac404d4cc3eb401e220. Chain 2 (Bitcoin): anchored in block 957752 (2026-07-12T20:53:32Z), 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/UKXN22537876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247e4c1f5e2332f382ddc147afeffcedc1953e71efc58f3c321c5f527b8c9a8f. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:02:49Z), 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/UKXN22537884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfddbf2b5bbd103a2bf67e31837fa47adce4293e4b3fb102ecb8549febe6bf91b. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/UKXN22537885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd151d133bd1e251d1b03c0ad0e11768c900e2a8afb4e4cf8138ebb8e09138abc. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/UKXN22537882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e8572d72518899644985f598f00989d9bbd38a29db608fe82a68bfde6d4b6dd. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/UKXN22537886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b651b9ff6543253c92387d16bd3c875f2d44ff8cc72e6f0e4f126994e8646b4. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/UKXN22537875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc9d2f9db9e099cfc2d525cd704035a52ee2ce976420d2e0d5b05c292dc4fdc. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/UKXN22537880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf62f5844dc2745cd820b700851723e8bd990ff02375aba7006ca0ed41529713f. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/UKXN22574793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c3177db65d4b2b8db5ac4fffdf091c2f2eca9c4c185b3daf70fc77068b590be. 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/UKXN22574774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x273f3f8bd1d9903c85f819aee1fe016ea306c43e80f33a416375b7d0cc061025. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:16:15Z), 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/UKXN22574787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c18f29e86a15726f6c8b4ca22236e4d979ecaf39ba13ca6e35a538c50b07b0. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:06:42Z), 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/UKXN22575111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ca8217e1970cc5362bbf86053614d6ad75f7ff4f65249fcb0f6a08e0292aa1. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/UKXN22574785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e22547969d226001db4ddcfea9fb5caf774fcfa8017781d110a8b58a00d0276. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/UKXN22597785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b73f1268dc4243e4be9b42f1ff2ef1a0b074561290d498337cf247f9f58399. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBMA22538510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d986e2cfa6b0bdc293e7bf738d15e3e8fc51864ff25d39c606956a9523982e. 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/GBMA22537918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x184db07a1dcc4e5219f0ce00e9667e0e7a8e9ee1c8821cb7a1689c59f944a79d. 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/GXHAF2501567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf74b20fc4de832da7e3c5bed0f325d1a4963c648208404ec4ac2b2e9ad4d6bc. 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/GXHAF2501565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefb2a8696c8ffec2ac718932e44daa54e03925399fcc0b70807fa3bfec9b9949. 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/GXHAF2556416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c7968e59fb450d24d3add18322729876d33257cf613099fae6d32e907b6dd41. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GXHAF2552611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f5c39d0713a37c83b00f505fa286c5575bb522f749701a6aa02f76283fd52e. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GXHAF2555479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9af48c6cf94ee6ed58239fff044404b22204e5a03fa5bdaec127943bb76373d. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:37:52Z), 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/GXHAF2555439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e40d5d0da7e7880b0ba8da8ca33f2078087d34dce4cbcea74e81300c076ae9f. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:08:03Z), 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/GXHAF2555473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35dfca9654dbb1990473f86363ae17b1b867faf964de52fc0f1c93595686d6fb. 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/GXHAF2555472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c63a331aa3d5acc85ca29b29436d265a17a24fc97831e942669e81e6c8f59fc. 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/GXHAF2555461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb54f62a737a85e744484164dd609b5fbdbc2ac90ce5a00a5885bead38b7211e. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GXHAF2555475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab83cea8cee59fceb1b3a81e4995641c8630f9a545e4f7c52e804c0c737909f1. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GXHG92550062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f4864196148d97df9a8b8da6b1945c596fb29f0e4ba8ecab0215ec5317b9d4. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GXHG92550023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbadd35de3a618013fe70ad099cc59eb7df86cd40daa8fbfae2068f1b0cbb05e0. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/GXHG92550120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5939b2d57b21e808d5f140b73862e24bb6e356ac271e1daffe70cf8534d679f. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GXHG92550144.