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 0x23df7a999e6d589c9d0fd6200784db728ab8486033736dbbed41dc0c807b7f2a. 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/f29ac590-059f-46d2-a287-9f7cd6ceab05.json and https://artists.proofprofile.net/proofs/artist/f29ac590-059f-46d2-a287-9f7cd6ceab05.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 0xf2efbf1b28293606e4617abca86e397216d75cab581623bc91d6f5b6e3812a3b. 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/QM4TX2155344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe5745814c82af0d595d39d45f88d27f8235da0c02ef851d7f5646a1a01a0d8. 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/QM4TX2155345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b7152e440d4f4f9ea6725379e7ba18ebf35e92d2b69848c08176878d94bdae. 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/QM4TW2138877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d60a6ca3fa3b17bcdabc33e2cc8691f8bd91d895a80ed5c39ab468895519be. 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/QM4TX2155347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x843d249286794953d067635e2e26349ce18164c018d35a8898379f7133d0624a. 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/QM4TX2155348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c4d796311f5a00eeaf873a1ab320aa77c4f57056ba28628f0dc2fbc51eb66e. 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/QM4TX2155349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78de496a22df306f475d7a45486daeba6cf37acadb728758a82b08c8364214db. 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/QM4TX2155350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f729d08f60f73affc95c54252305e67ba3a22046bcfd02fef079583261a150. 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/QM4TX2155351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x595582a6ace03bf37d983235e9a6bfa531419a605d693146a747afcbd0c614ae. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QM6N22145237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc316d75a444fc516f682d142b2f57a2acacd806b791e39edf7deefbaec251b. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QM6N22145238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f99fa6fd18ebad2b8ec2b37003d3c8ab8b013cd3c7fefed0f455ece9b88b4a3. 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/QM6N22145239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6753c0606768d0d7b056b1e96bbb2095f213ee9103a90f59d07deb205c740259. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QM6N22145240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x099a3ae198d29e95203e02163be8a4a0bdd550aca4580519a1ff89b38a9787e7. 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/QM6N22145241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x749fe4312501b74c08648c5a05c420aca8cf1c0d9751c7123edbd8b99e1c9da2. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/QM6N22145242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d544616a5ec2db974a7ea386b5f4b046b135d759654d6c846fcc5e150450cf. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QM6N22145243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21812020eb1b2e49be94cb56b73cf01dca822afa858b68954b2c77abca69ce3e. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QM6N22145245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ecf56e38f30521096217ef2a355a1c3a352572037cccd2cf7ff81011935e40c. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QM6N22145247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae907e78470a8af0da4fb947f146c5752c428f7fc7f9761d310d0742986b1a36. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-21T23:31:01Z), 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/QM6N22145249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c8b7cd31c88f1ca73a7e616519ccb42eb24d50b359a6db7cdf23f38b5520e56. 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/QMBZ91762470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42692caf650cabef6cc2f1309a10eec91f45d4257ce27c41c756e0546acb4057. 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/QMBZ91762471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfaf190e30d880b59af908b332212236e856084e1fa7170337b7adaf1759f9c8. 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/QMBZ91762472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a98ac54fe60ff37703175df0ce76d09e79992679967df4ad480b2bea69fc71e. 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/QMBZ91762473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd76b289fcdc5ea6c4a1e63d9eadea4f82714d63e8cc0598492f25f45742a9157. 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/QMBZ91762474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4795b5e7a5a8f43c6f0d9054b7e4084358e12421c230fbe903a983d0eaf82723. 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/QMBZ91762475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb65a5c8b63c6d8393e990707da8046c29ca9ba80eec1ec0679e86069c3477d08. 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/QMBZ91762476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf03d3ac978e7899520790ebd11376ca6ca227e113844601aecf1c1cb84b2a8ca. 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/QMBZ91762477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x101a912cf4de13b865aa9474365e411f1361805a3bac4140736ea75223d2e3ef. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QMBZ91762478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc15d1042bb9f1c444f3d48f570487ce832bca394290eb5322b4a9724fee5c37. 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/QMBZ91762479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcacf44b9ac239fc5f157487897aae082c57e9bebb54d643904489a835fb90ebc. 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/QMBZ91762480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1427da0b6982523f33365e24d9280895b72a62f0b11c06cc4e322c50f21ea6c. 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/QM6P42322133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69be38495dc40b281a75906dbd752635ea41a00ea11fd8633d216bc35ff38406. 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/QMBZ92261300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2efbf1b28293606e4617abca86e397216d75cab581623bc91d6f5b6e3812a3b. 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/QM4TX2155344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe5745814c82af0d595d39d45f88d27f8235da0c02ef851d7f5646a1a01a0d8. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QM4TX2155345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b7152e440d4f4f9ea6725379e7ba18ebf35e92d2b69848c08176878d94bdae. 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/QM4TW2138877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1366af098350e1ed4be46cc0e1c9487d4dbacbeb3be75da83d51381bb2c8fc90. 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/QM6N21869045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a98ac54fe60ff37703175df0ce76d09e79992679967df4ad480b2bea69fc71e. 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/QMBZ91762473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3a1b7036ed8e7384f41054053a24688de4dedf8d582ff84027fcb977190da73. 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/US7VG1633151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52237a48e16d18a852250c87a9d392f711f5579a404d24bcd1a2ed12c3e4d3d3. 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/US7VG1633152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2201f4070eb34634405907d48bb874d5c60ab2ec81c17d04a16bfca1d2d00f4e. 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/US7VG1609830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a4cedd07b52373a072b6c45487fd2561e8177ea04a351eb7b251867be984ff5. 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/US7VG1609831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x961b200eec20a1b5fd8217576da45f4e7dd50b328e6c28df02ac8b160adc2988. 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/US7VG1609832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc5d1fcd2f24dac78c3013a08a7297a30bafb07224f4161beedcc62738d42897. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:33:09Z), 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/US7VG1609833.