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 0x21860d815f3777a04631c57db4e719f665909bef9fef88e60efc9e931b293356. 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/b4c50d0d-b46c-492c-b893-c9622881b8dc.json and https://artists.proofprofile.net/proofs/artist/b4c50d0d-b46c-492c-b893-c9622881b8dc.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 0x8368f216966d6c93c86fc1bc60317fcdd34d4e64b1326aec8d6784a521bae2ab. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T17:07:30Z), 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/DELJ82039721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e3e686d459ee7358190813bf9215c9a8103b0c6ac8a5d2727181bcb75e199a6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DELJ82013238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ebb66f8cf156aee56134cb37aed401fd1048918fcbeaed52981d32fa9dc58c9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZDA61901716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6bd092e930f158ff90855e603cfa7994614a92154f147072e86388f2ece0ed4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZDA61901717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501e2af2eb2026ceaf1169a064db9c2551833433c271df608dd29cd06b262c8f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZDA61901719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d6a8bbda80233189b4c6f98e27ff47b925d7c2043daf0ebf0ef624b70153d17. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZDA61901721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e7599e8eb66ed3eb336915bad2bb0529770015a72bc5a2447ecc7fd20ddbac. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEZC62445201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99198a713d581c0aff45113263aac2af7df84e6efe9634fd7ddfee2a8ac6cdc9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEZC62445204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde7a21795f5802b64804ef62b607212445353263a9a8fe592e987ed3fda894be. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEZC62445205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81cb1293bcd9e646d2d72eaccc0cfb2af522bffc4230ab9ce16f32d3742cc4ea. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEZC62445206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae3193456299ec0493d64b887fbbed49ff759e55147ffacebd173593256c02c0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEZC62403639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c63ce390728fe1ee7ace491d7e2648187e10edcc3b7690aaf50b82dcd6bd14c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEZC62347268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f04beeeac380e2482cf1109be16b73da8a69ceea6365ac2adb1da05dbe4fd64. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEZC62338204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f5997104b23745731aaab02b360f34ed1af309cccd69e8db17b7840c5efdfca. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEZC62338206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x566ae955480ce441dfa06fb028f276d86173260a09a11e7d167f29291e61dfc3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GX8LE2283037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccdbdc9c568785d618c6331669b7559d80010fd81da89ceae2ca8a8c2c968b28. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZDA82265670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa499dd73d44e6cb3d6b37dc616bf3cff37119c0e34bab88441936163b265d0db. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEZC62370676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e3a95244623670c807b42a35ffbeb9697da466787e922b4ff575b3e37af716d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZK6J2261113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d8ac79cdd6be1d6a22053351967991a27fcf056da2d77db089fe05e3bf1851e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZMEM2237651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3208105d2b87402b1eed94427775307c4747ae25e4c4eaed1938e179d0493fa. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZMEM2237655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca36926543586e306bd9968828a37ef6b8bdcdc4ec3a809675cebfd1ab9d17d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZMEM2237658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5de87c9c414acbf8e591477b462658847e18b80bbe7a9bc441a2dda36ebf1fc. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZMEM2237662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc172199b5b0fa2642a99af688f3fbf29c3c898a5105dc711f67dc7dcda5a146. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZNWS2155308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b96728054331489e093301509d42016c8b4735ff776323e0280d3e607a6eaac. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZNWS2155309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e2672cc0135ca780ad0f2eaad14e5bc6428c3e01927bc016188f69129b2af74. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZNWS2155310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43bb4a09d310b6033900582088913e55fc56bb8895d365c08c4932a3099a0b7a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZNWS2155312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40d409beca395a0108efcc6352c09e03f95e95bc269e42eb697811f0d9f115c0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBSMU0045031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x734dcf1307e7ac5ba941865289718377ee73d15d5894b50f758261564a4f1b94. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEZC62573273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f5d6df60e62dd0a9192d6788b355299bc47578a919dfb8a4a6418d25b3ac79e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEZC62462948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd92b995d86c6f1d54e1c28bd0b6987b93d02f87c4ba603c05ecd2d0e5f1fa0fa. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEZC62359191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2460ae9915ba666d22f85bd4777b1a5ddaa9941bda86554946a1bfe71eb1e896. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEZC62338133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e1bb7c18b1daa9425679883d8cf8f0cdd5b3b14fa6ececf8920e88a10fcb7a2. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEZC62341497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x776a4a607499c4c794958ff313355f920f59ba7de94f252f3e8e11a123bd696c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEZC62350488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e434ba1a7dc64c1ac27f88c9d75846e5df1a43327a4ad551f8a63f5685b7ff. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEZC62350489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9103caa8e8a7e61ec4881cf6e84a191a9277be4599a8f4848ed00053cd98e3de. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEZC62337235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ae153290b3e286256c8a9969675ad765e8ffa3fabe1d2c0efe50ef0dfb5a8b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEZC62319873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44410f14ffc6c41721a7b6113e3238fa32d03733efe4e76a6401e6c638c7c567. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GX8LD2215432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d72ff954033c5770f9cc5b7e428bf96027aa684b09f8fba11cfd76fc65626f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEZC62210437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb44641c5d6a29267a45c97600dece52081c6ca08a7fa9d1de21885fc011b534e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEZC62296480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9adc2d570f7f74ec4efe03cef8142b2ace33ababc93afd0f5a7a9a33ad8e7c05. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZMEP2253956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40d409beca395a0108efcc6352c09e03f95e95bc269e42eb697811f0d9f115c0. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBSMU0045031.