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 0xde67662819e4ac1ef37ca24966df7f28518b4335405513e76c5f5b84ed4d5125. 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/72e1b481-5bd9-457c-809d-6d31b15175d9.json and https://artists.proofprofile.net/proofs/artist/72e1b481-5bd9-457c-809d-6d31b15175d9.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 0xbf998cd02d73d73007566d69133f19539e6051eaa183af304e0f06bb17945d03. 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/USA2P2346875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba850bec0c41746f205a7a9d93c3bf8b112526f5aa8b323dfdfea0a4c666016. 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/QZMEP2575909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cbeb871ba763242f12f1ffae0251b974064b564f0cc2b9ceb3f8a56ac026c25. 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/QZFZ32574033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe92c18f438612542daf25642d70648639f6711a1fea746e577cb1f6a37c693b5. 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/QZFZ72558188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda6e9f6400f2fd0c683d34435b2359f7adb20537ccb4820df1fa7254817876b2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZDA62529902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f10a7d6df7d079a70558a31b03441175c04da56c2ff26134432b405a901efcb. 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/QZES52550137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc301373f4f56bf0b812c315575ea3e4dacfec0721da0680ecc0bd26180a08796. 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/QZHN92518845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c7db08218b72e59b072a5bc1796436270db2c1c780bdf8f51915fd7222a1fbf. 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/QZES82548879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aa66d14c85b6c90dc6c89ed7e8fcff5492942deef90835aec698b9ff0d41a72. 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/SEWLR2437101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6489a463a892c72a826d0b2e4577066bd30ed01aaa313a87bfd59d999d05be5d. 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/SEWLR2437201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe0c573ad27385dbb9c2ca62ac86661407c2792c2efa13a4c85d058ecc3397d8. 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/SEWLR2437002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc182af3dee574041877b8aa8efa0ef1a97faab1321ab9dabbf2ea219950031. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SEWLR2502601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeddffb4a7c5cfd2e733d4a331a7e13f81d029677df008fcbb7c249bb4a588515. 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/QZWFH2412890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b5649aa037473942832006a4f1078fab35bf34f079d28b058691a111bb669c7. 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/QZWFG2466775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f50c17a1960b51c8f90d762920221756638d2cfa2fe56080481e26cb828e32b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZTBA2437107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c2f6e7c09a5572bd06d1410d7ef36a82035389c753cdf8a02a41a025b6d389. 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/QZTB52480892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x781008811b4cef4f9b53e2de88a5ba0070616a8be3423ac31b38fec5e1b4d237. 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/QZTB52480893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x859a99df28855b94c7729767f81813cc706dd374360e79eec1948b9490a8d9a6. 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/QZTB52480894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe781b9e8086d499c9b5ec560eea9bbea3fbdc045368545887f982a9cb8c73f7b. 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/QZTB32432448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadae8b904cc798b3f8a503d3ea89101b00eb6978cc26efc433ffff561fe767f2. 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/QZTB32432449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d2a65df06246d04d8dd0aa060afe3aa18bcd3480045b780bf51e3fae99a652. 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/QZTAZ2431397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fd2b2635ab63b912c9c79c891c8f81425ca813c374cc02a9feb0a1372f9accf. 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/QZTAT2486791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6579644023e901ae5f3425012600086eedbd899aeb2a400c9ed7a04dbfcb82a. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/QZRP42479336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a5eae3d5cc2c4baeba3514175eccb3b70c2096d19683fa955beed53c58e98c. 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/QZRP42488428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f072a4d5d2a7a9c728113b77db892565bca0461efad25306669ee48d5f2c69. 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/QZRP42456084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb465d2f2ebaa9985186232056058c3c7dfe6403f71e875dd0e5b82724b2d5355. 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/QZNWT2402531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd141640e2771ba549b1a7a4bc1b341fb3451045a521be5bcd108e31935b3c865. 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/SE6HN2421874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c93aa1301633f1410743118197be9291a691e20007fcae323974e248049b105. 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/SE5752498331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45f1726b778d19a189a2e6db2d79fb6030240a2e479d9712296f23abf0f1e581. 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/SE5752419177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f5f63e03eeee20653e622f9ea9edcf0391d8c94af983c36e48bfb46b307584. 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/SE5BU2479932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa43908730d41fd425a8f67ddf029f134e40c538a3cd22407bf3a2889ac2d7b. 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/QZES62463820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9356deb52486bab2de5323fe3e1b5942045bc9484cb7063f8cc6f6daa4f0d068. 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/QZES52498956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb13db8b3ae7caa2d2af812aad9e5ead425efa0421ca2f5946ec3b00c7a9ccdf1. 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/QZFZ62437931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb04f191b9b01b640f7982c9ca4c2647cfe7eb793e74660c108608dd8c059f8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZWFQ2393081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa338a21851883fddae55766f6617b98c054d1712d308a9334a863d7d8d7a6c52. 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/QZTBE2347395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94da996e37b633b6e235c57f26d3274b9962e07e80caf5524a83ba92cc9016b6. 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/QZTB52336955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c06fd1834a2b5dd6b2e0c2e2f0e3d41c9043d89ede0350a648000dfa1d319a4. 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/QZTB32348924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x914f358ad16edc021d557b9f9c9908328653e9dfe5863125ec9683e21a8efa19. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZTAU2313729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x336530c00631b273d58a4dedc832d664101c2260aa7ac001f799ffae7bfdeca9. 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/QZPLS2374627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7109cd60cc51c1aa194ae3b58b1a12cff0548d0eda14b5d1f30550c4abdcfe71. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZRP52378499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x336530c00631b273d58a4dedc832d664101c2260aa7ac001f799ffae7bfdeca9. 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/QZPLS2374627.