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 0x9c8033c3bdeead427ad3147556fa796aa56ecb914d93d8f2372dda171530080a. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6ac9929a-854f-4928-b9fe-dad5977a1912.json and https://artists.proofprofile.net/proofs/artist/6ac9929a-854f-4928-b9fe-dad5977a1912.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 0x579df906497700397090e3c48e7a2b50ecb0a2c7d2e1e972c073126c70e0ff22. 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/QM42K1895822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f672c299826d99fbd971771d2ae82bf8513ea86a92048e94cc82d37c2ba4a49. 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/BX3AW2000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f206e1b95ce763fd002600c44e376bb948f4887b6530872a854c930b2a561e. 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/BKSHK2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x094c09b01df22b0bd908e705cc33b45dcde4c92ddb4b9b4914bf21d57a9094f9. 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/BKGFL2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55f6a6fc861bec19fde61c58ab407a9cb2cbd1d9991481c7b67eea5dd4a46792. 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/BKGFL2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b1d0195f0873bf39fcf32d702dc7e3a77af7308430d4ac32ba3434990998a0e. 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/BKGFL2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x944808a7beb74014297a22f082ddd542d6b500b0a763d2b2ac529a49b1dc3232. 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/BKGFL2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b47626268fa45b2bc106e53d7b706fec40d1d72097554dc9ed237352ceca07c. 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/BKGFL2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765733f11fa7731864f623157e76dd4ee8f0b5cdedadbe78acff3c94e93b53b6. 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/BKGFL2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b47626268fa45b2bc106e53d7b706fec40d1d72097554dc9ed237352ceca07c. 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/BKGFL2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55f6a6fc861bec19fde61c58ab407a9cb2cbd1d9991481c7b67eea5dd4a46792. 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/BKGFL2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f206e1b95ce763fd002600c44e376bb948f4887b6530872a854c930b2a561e. 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/BKSHK2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3828185c29f2c65cbe69d6ff73e9ff72bac23146c9c982e5c25dc7478286d6da. 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/BCB1R2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb36138331d31eae6b48302ff478de2b887e76a82462a1911aab8629a82bf59. 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/BRTCD2200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b286117df3ac9c3cd589576103d2ea1b14ef2eca8723c8d1cdc6731c010dbcf. 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/BX7MG2200191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6b4dbfdb1b05cf8b1970009123f4513125f5c6e633d60d100ef54597a9cd648. 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/BR6NK2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76225b7f432172f42f04e711ebc63c0325e0baed19d8f82c39b2941fecf0b0a3. 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/GBLFP2047569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x950f36871760a626717d1394ca4bb9d918fcc5d6438146aafaa57da7ff71571a. 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/UKXN21920724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe6928f7786a5c4f8bd0c2a8b434f37cb6a0b482b110bd6f93635b01efda5451. 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/FRX452010511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a72f38de5544a0d458d64cebfa6d4b8146299b7fdb19ef527857742d784df63. 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/QM42K2031919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c6be7e2aa324789bf27198e4b8835bac7f7589e7139f0625ce88e9291245344. 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/QM42K1907309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70ce6fc027a8ba0772d83b67c64d75c6b8ecf8b5b5cf67735f9ad25538fdfd7. 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/SE6HN1992967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96cf91d8279c2b70a1dc386a7007b4489e0fe4cc52635918cd1a5179777fcea8. 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/QZGLM1935398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0b12702dc0458a123fd8b77a1ee5fec72a41b89ab8cf77e12dc9778f75ecbec. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/FR59R1893059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48621f0c46716d49215087afc937e6dba849bae7ce663db02ac2d8a9c8e27057. 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/BKGFL2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4aedafdd05c327c5f341953fc8058d1c32c1df43793c1f4171445c1b7088f4f. 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/BKGFL2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa937e85575f06524c8a1b4b59c9e1993fa7bb0fbf344854cae53b45eb25fd4e8. 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/BKGFL2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e59f74d0f06ff52b780781744f614fdb2be93a37ca81fd2b0d7dadf5eb9ed97. 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/BKGFL2400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacdb645cb25b616f9196b3e320088a451beefc5429a014658df3c8cf20185fab. 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/BX0PE2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x726028f813b01cd778dcec0a23bf585d23f30ec1eb26f2ee6d3c7967ac836629. 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/BKGFL2400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48621f0c46716d49215087afc937e6dba849bae7ce663db02ac2d8a9c8e27057. 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/BKGFL2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4aedafdd05c327c5f341953fc8058d1c32c1df43793c1f4171445c1b7088f4f. 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/BKGFL2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a4edc0172b1a074fc0bac99baf8f38cef7b119c7945c405b692837edf5e13b2. 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/BKGFL2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50dd32333e7d729a56460377f7a09a41699b0c611af2f2e0cc2e063177224379. 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/BKGFL2400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa91a4923dfdbf71830c5020d0c0c9ea66959f94565a49b99d07557637c0b755d. 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/BKGFL2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d0fb673498b0a46da54fa2411b3593d440fc43a0a1a83b6dd23d9caf4cd0f5a. 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/BKGFL2400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa937e85575f06524c8a1b4b59c9e1993fa7bb0fbf344854cae53b45eb25fd4e8. 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/BKGFL2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e59f74d0f06ff52b780781744f614fdb2be93a37ca81fd2b0d7dadf5eb9ed97. 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/BKGFL2400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f118928d0aea16022ed642661f502a80e3162f252b7fa2be5f02b48acada39. 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/TCAJJ2574390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa91a4923dfdbf71830c5020d0c0c9ea66959f94565a49b99d07557637c0b755d. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/BKGFL2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76225b7f432172f42f04e711ebc63c0325e0baed19d8f82c39b2941fecf0b0a3. 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/GBLFP2047569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddac4263e93eb5bc929079f8217fc6dbc4f810e41b48d172cfac19057a85697e. 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/BXN6V1900015.