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 0x27c2da6778fa885a3db809d3475cdcfb7d566b6cb31ef6616198f402e6180ee0. 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/e3f11e82-a6b7-4752-a584-2dc1664472c5.json and https://artists.proofprofile.net/proofs/artist/e3f11e82-a6b7-4752-a584-2dc1664472c5.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 0x17c2238b80d9b79c429fbe669fecfda75703602b632b40f2283e05bdf44459a3. 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/QZNWT2279714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6250d61c1de3a3792b4fbc773c46fd3247e599fe7673e61f0f3ac4e9d4293beb. 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/QZMER2246270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b983579ca421cc336c00d76b75dfc85687664d7b1211ed4836fdfdaa3f8761. 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/QZZ7L2405584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xead503f52bc2565e784186e3f01de3fca081987584f8e0eb03604ad5d5e1abce. 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/QZWFT2462165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20003959af1fa7af5c7bc984ca9de7930fea08a164bb9ba76098a23132b99551. 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/QZRP52483854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c4f9f3730c8ef12b43b3a1e47dfe0cea75f516643a502fcfa77763fa6d2e78. 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/QZHNB2454633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf573488c7b5e2df82ebf7d1fa50ada63e322d17457d73395f684e2ddda972bde. 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/QZHN32462178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa94517e984bd0086286de89afba007649e9df00f0f31917a292430cfc50d4c5f. 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/QZWFK2308181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6682318b6a11278872c4c04e6ddb69e0baf7d1a58bfb45dded435ade8bee6f6. 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/QZTB52307516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b0edef481fd6befbc0fc57ba7b2edca7bec94fdb93a03c3d786aa123c66d29d. 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/QZNWQ2329222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8266faf9cce1aab014f8ada4b5169fbf89caa092c8355cada4d58a3a911470c8. 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/QZK6J2351575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e6198a3af086dd8701f3bccba3c27e60eea9422a47bdc148e9c2e49ca0431d. 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/QZPLS2281187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc176c11fa6332dbf11ab5d4c064a94ac0d7ec3ada43616139216430bffa33de5. 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/QZPLS2281188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe036d350e3059e07c1d3d15a7548bde44d7f4d4054abdb39e901454bdcb8245d. 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/QZPLS2281189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x973eda8c619df61ccc10817664e17b0126ce56bc8e7217ff3afa14238b552dd8. 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/QZPLS2281190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda2bd72065dac18c4c9c810ab723c0e8ec1dc2437ca0f32614a9f4a6dd775cca. 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/QZPLS2281192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd32969de382f5a2fdba216956538af1dac6d4020a065e8ac66f1689fcac6d69d. 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/QZFYZ2372616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c883d1159e789cc7ce3fefffdeee70f473a0c5f1ad528c0cb270efc05dd4ba9. 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/QZTB82237070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x740572619cecc08e6f19df2c60186a1d750f9045d8fb6159e2137a2681b27fe0. 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/QZTB72297918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd73ba205f1672cf48bd873a12a717cecb6807707fa7dff20a541084ef0273f20. 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/QZTB42263990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe07da86ec373f10039190c61b22523cdf9206e44a98e2b45ab0efcd083f65a50. 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/QZRP42252229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a35e0b6386513bc9e7089512ddb1bb8d03094ed7c62a89cf91d30e455502bf4. 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/QZPLS2222300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x004457712c50fcba6f3b5a63a41ed092090dae8ba5c63cf4c736bd9f923ee356. 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/QZK6J2237213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f013a7b85643918c3d1cc44fdd74382d9327a6bb640f87e420bab67d792cec8. 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/QZK6J2237214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e73c09219ab54136a9527aaf19b67b8a8595e430976d65972c72a70978e57db. 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/QZK6J2237151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf91cd09a58c1d227ebd2ebd23c47ff93da4d49715a5ae4c35e5266bfa865b30. 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/QZK6J2237215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e73c09219ab54136a9527aaf19b67b8a8595e430976d65972c72a70978e57db. 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/QZK6J2237151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4738eabd734b8a27877465946734abae17e4417d40384f3a13044e086b37065f. 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/QZTB92320188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbb717db86d61a5f4c666213753d2094643f211ea7ea061bdcb97eea6fbff71c. 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/QZWFG2301046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff5f43f737c98629ec6b7f63c1ab4e6f354c13a88a36f1bd60bb0ae4cd1007a6. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZWFG2301048.