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 0x01cecfcaf65c8463acb76120253901e6629447678c6a0e87f946aa414c068922. 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/382ca913-7de1-4ce9-adfd-622c81d6518a.json and https://artists.proofprofile.net/proofs/artist/382ca913-7de1-4ce9-adfd-622c81d6518a.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 0xa1c46dc9676de00b984e6ed46aff06a069a7a4009d4759a1782ff35d96580ac7. 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/NO2DY2300510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f842704987c61925cd36e2147099f1882c6e746554cffd35ade22a28714abe9. 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/NOUM72400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f56fa2a229e68dd8b1e8fd836942c233ab0a3d1a8f4bfa9a697776b1eaa8dd. 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/NO2DY2200262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e78a08f4268525d68f5898691f52dd7d4053225666f1585d7c86c0e0311d7b2. 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/NOUM72000345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedce7a21721c1a27a30ce5a99671442fbcb44aa2b763513f4a6221423101cc53. 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/NO2DY2400188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f56cffbd70bd1af94c2acee9f78152e0eca1ace2b98fceb80c72ec0f564991d. 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/NO2DY2300644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e4db9b2a1879be1fabccc3bd92bc17a060f739a11122a292a1b382276b632dc. 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/NO2DY2200318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6beebb7b5f0fc437090fd77d385464506400a18c4cb52e5814d306bbbe805f2. 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/NO2DY2100028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ea2693cb7b19cf449bcde4df432c9661986b3a48e7df5132f0055d43bfd0fc5. 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/NO2DY2100027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c52f7c9179708f3d737e02ac701744b39c3dbc7d9e8eba4141702b702df4fb. 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/NO2DY2100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74162f073cd8d169a5a40352790fbbca3cd68c1cceac0eda997e6090930ae25c. 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/NO2DY2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac3999b504f0ec789edacff90ff94f68bb63d795e3e5b4734c52161b052c659. 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/NOUM72100022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde66e47cae023bb18a7a4851236c6e89f7edc9eaa470a83a8c38682491583a97. 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/NOUM72000527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e7edbd3fa8e2e3c9afdefa41c84166d3780852e1e5b47dbc74f87a9db1de7d4. 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/NOUM72000426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a1ab716b32118b29d6769eec66b83cb834e8040f624fb85abac9b8f629880e. 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/NOUM72000287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e57a33ae7d90de77dbb7e14dfce83d73142d0d937e3d2c50bc927549fbaad74. 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/TCAES2079080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3d9539696af66b851e3234ef01e930e1dbf70c70cfe3b4f9c1a096a38ff1b9e. 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/TCAES2069158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed0fa6e6478bab3fec3e2833e81e4f1542687616fa32e525b6338a72ec069f7. 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/TCAEM1995516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bdc8886da33f7731929f496f26dcbbc7bd6a98105ecb17513199d02d24da91b. 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/TCAEM1964376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f135b56a2c823f57ef57abf8d6b4a2687f26962de199b6e678918fb3f1426d. 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/TCAEM1909936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f85b67fa8dcf0290d1ff47fa38477bec955f6795911af0108038ee9d23082ac. 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/TCAEL1984678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27bb88128608312ffc4d681f4803eed4a359a929b3cf77d062cc13c33d90c97d. 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/TCAEL1954809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274eeb76e2ed7d078ec4a30b8f5867eb1437906fe75c9a0847e7593d7782101b. 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/TCAEL1921985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x465a0e0da661bf6160f07de8ac194e014f3f9bc465a44d4534483a821e22a283. 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/TCAEL1913155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8f9aaa80deba247f80d5e6393c0b606142326f704c986736f27304645ebc529. 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/TCAEK1963343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ae27179ef461aad9a6b137913448d4ae9a1abc9f052cf8b1860954a7a48c338. 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/TCAEE1996300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9903708e4c8b1e4b7a5df58fc9bf7e821ee2200739261f0ab7a4c8be981bd290. 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/TCAEE1990249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958fd441999d8dee4c67e35975aefe7899570e4a956dce3e02511b36786c357e. 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/TCAED1980665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x634b6b373223dd9cc51efdfa45e9da47978a58e4056f1f89698bd719fc635f32. 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/TCAED1937452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40145dcf78bcb34337b2bd485bfc9fd36d745a99e3a7dee43f354b9a8b22181f. 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/TCAEC1941476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe4744b816190e3fc050b2d8c80d109d5bb74a6fc889845ee6636d1443d27ab7. 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/TCAEB1965299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0919e5b3a2acd3906b97f2947f03efdbd5263c7b0f777e681c0048217acc7384. 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/TCAEA1978867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75eb03afeceb47a228d3d6a4ce67115d1a03c3b5fa7ec8f45840c06b28fa86e2. 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/NOUWM1801095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae55c536b70b790aed067b36f0c1c81d4cb32aaaf5ec88782a36012a2b6e0c0. 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/NOUWM1801070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe01168982a1c143681507d84e36bd6239781132e9c9e580ee47d252a0717ac14. 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/TCADY1806081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20a72d329ad920153066a81ac88dc0d9bc89053ba690d45b64781a6544ae20c2. 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/TCADX1891921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5127a530b489a96f7d6aede7ee1189cbfdf5f786f283272bf3e805ca440d8ba1. 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/TCADX1861201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaeb4eaeb1ad576d578af225848c6b7bdbadfcdf454111af9d9a37a837519a6e. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/NOUWM1801055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb71f442554dec5a4c55406f92132d41cb153902a524e37054cd78840537726. 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/NOUWM1801048.