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 0xdffc12d3df355e8a48d5c2d409b19ba4ab0fb0c08847279ac814c8d214cd5d6e. 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/d54de99c-2039-4211-a286-23a4592ea6ef.json and https://artists.proofprofile.net/proofs/artist/d54de99c-2039-4211-a286-23a4592ea6ef.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 0x7bf19e45c25f3b7d44cf722acc13cb4e72957ff22571186a4906fe5e8f3969f6. 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/ZA56E1500492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4165302c8ea6ebef9fab1b534e025a78b6d75ac9b35483f27bafe2230b006c4b. 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/ZA56E1500494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5622676b7bf9739bf011849b8c51ea0054ac9e9900c9de072ff5b54b46e15085. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ZA56E1500509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1079e1c05449e09524a495dc9422bbea54c010dff62fd3daee66be089d02d27f. 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/ZA56E1500510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc387c1903c4d4ec0660246fc833f020474593782ced47c442290a0dffa7435c0. 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/ZA56E1500515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6757f836fa5e9458f1238a1df5ca30c906c8f21a305966455d566e77de424ad3. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ZA56E1500524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f0f4e7773a3f4d81b10b8117d26142ba225a22acf1b04247038b4ac680a922. Chain 2 (Bitcoin): anchored in block 957526 (2026-07-11T06:03:28Z), 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/ZA56E1500525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a120bddef7abdd65e7a1fd9853c9870ecf46cf67fb4333824527aacf3856fa. 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/ZA56E1500528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x071a1a011ed57801ac625cad31ffe9272e94c434e2116b5cef4a0c26af4283c7. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:36:20Z), 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/ZA56E1500529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x620d7cd1fcf21adf0391c284b4ac8a3da719f997dca25836643a56a4c91228dd. Chain 2 (Bitcoin): anchored in block 957526 (2026-07-11T06:03:28Z), 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/ZA56E1500531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7c0d22c99f37fef7d3c5a73332f636bc31f76d109be1ad1c605a23193fcf4eb. Chain 2 (Bitcoin): anchored in block 957522 (2026-07-11T04:46:56Z), 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/QZWDD2270474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc28618e844d05e719527ca451d209a084a2cf66a42a10f34b7a7d19c6b2b9425. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/FR10S1846816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5243f3b5c37bacab225b4482aeca852c79f2cc84b82fa811c489dcc66c14ee9. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:34:30Z), 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/ZA56E1800476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf63832da5740b67b7f99403f36298fc84dc9a27f434e5d3755088f4097934e4c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ZA56E1800510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x996dee184e5747b909f9c7ceb3f1e51eab8fa678db4374c40d247aa1fe700f45. 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/ZA56E1800497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4678bce5ccf076a45ee07ab49ad34c447de7249059f2b24933ff9c0681758b4c. 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/ZA56E1800499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb39ade2bff396757f870b371440b53d5fd3a5a4a5fdea7219cca9c3ae5fead86. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/ZA56E1800502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fa5c1112c224b52623d00ce5a9e8c501249351cda784422cd3c796a1743bdcb. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:51:21Z), 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/ZA56E1800746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e252972e380ebb690201f452db6b90470aaeb7dbff14c764e08b4dcaa97e31. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/ZA56E1800748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf7e83202b5d21d3497de83c9bf757e2fe8b64b9dd4cfa8e1a497dce135f696b. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:50:49Z), 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/ZA56E1800753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e09966c32b45bf6f9b824bbf3f49fb1c73f0902a5c0ab403cdc0cfe1d2249b6. Chain 2 (Bitcoin): anchored in block 957526 (2026-07-11T06:03:28Z), 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/ZA56E1800756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f9cd1510a75f07650c632c8ca7c781d1dcc5ed9666766796c719bff036eff2d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:57:26Z), 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/ZA56E1800718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e8ea56a961c5e7c05af024e630dc3fff2c4039f85e9bf1e124f853a9b30524. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T05:33:53Z), 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/FR2X41849893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x705fb94110c1f324dce989dcc5667e383e57355b25ac09941bef709b8ac25c74. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/USANG2041979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5ca28d6721f81268d654d356570a302f7addadc7c68696d8bd5677a6bcacee3. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:18:21Z), 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/USANG2041896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe910dfcec0df415ed5c8410d7126362fed8375d2964c627e7066a7bba0550a5c. 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/ZA56E2100810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ef409b604af570ce4fb28a8b59ef3d55f64f8370829b2c5da497e64b8cd878. 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/ZA56E2100811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x914881d3128e7ca71b0cf46ba249e2ec77be8299f1cdee5a89ff444e66c2ec8e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ZA56E2100813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8862feaf0073bbe5f72a789b76a55bec042b53d5cacfc5db29ce596a17efd8b. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/ZA56E2100815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa447d852c2cf149db98f0c58427ed847ce546de860160e5d40953fed84ebe73. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/ZA56E2100816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4415b41468a957e1e7dfc8f0e337472f76f2c31ea59a623f5fd87b9502f727d4. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/ZA56E2100821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac2bfb4575331bcfc3d0ced48c7542e2107a35e9730bc0882002f779c325528d. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/ZA56E2100823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50cb53bd1b906481513220c897ba1e4faa1e220f32ae69c92cfc57ab1d337078. 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/ZA56E2100837.