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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b88e3bd6105a6ee3d4b1381fa2f738cc08dede0fa77eac690ab4b599087cdd2. 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/1c6fc065-b463-4003-badc-72f976349a06.json and https://artists.proofprofile.net/proofs/artist/1c6fc065-b463-4003-badc-72f976349a06.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c668c86902700efe14854ff6c2abd4be4e4a5aa6ee01db6c6bcb2b33657f7e8. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZHN91915234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c514be6588f0691ddb695f76314a0e7adc6edc6379fb5872ca752409ea5555. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZK6Q1929452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb41e47c4018c2e45360f65454c1abdb3c04a9e481aa2a4197f056ee8ac7ba1a. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/QZFYW2016447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad6fd1d4314ad0215a1ed92c6c0ef7bcb2a597855af7310c7cb1bdcee1640b3. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZFZ52003061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38746af9ed48223a391e91a6a8fa9fd39497f47f543039adfa0b8ff3173e694f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZDA82016691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc01f357dfd8b562492a8aca25748d7fb320dddfcf8f792710713b729d13f83a9. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZDA82016693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd0fd6228b0c7648e9731bc4d2608db0b9de0cb52305e65f04199ca766a18f4f. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZDA82016694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f5b0389c316d45529b3234e4a65d2146bf2b5ecc8889cbdc9ad2a658a63ca72. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZDA82016696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd2e5b58abb4a59f02f1bc5d2338dbf956606f6439f1c85621fab7f3de854312. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/QZDA82016697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfc10f70fe6c041569cbcc60acbf38ba8bc432d8a0814bfff4b9a4ade7c1436d. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/QZES62025196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23070c6944544cb764d55fae451d446e5ad5eb98cce13e0655405bcebad7fd60. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZK6Q1940585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db10c7e51e16f8dd93c0d3fa5b25af6b684d92d32c656d1ee97c62f62503ddd. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZHN62099078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x014befe13694f38c47a0b5360a276a7fe94d5dae37dae24053ee027211cecf4c. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZNWU2014208.
She Wanted To Go Dancing, So We Watched A Movie..
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x120b3c918e3e0066b53fd4fda78e064aea933f06b14939720c18ce4cc7db07e4. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QZNWS2060822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x707eae5df8f63f31dacbcc373044da158f88d5601de2f0ca45b73e77d3a174ea. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/QZNWZ2003703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x635daa34d9bf9d673ced8a521255c6884064d444fd41d22a6f369c9513e004d6. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZDA42160171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb8e56bea69e8cc3aa12697c64c2e55e2bb3870ae3a4fc4a7ab5b9d1bf62134. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZES82123947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x995111a5a1c38fe402d57bdac9c5cd50461da02c158f46b63a737cbdc996dfed. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QZES82123948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91df172705b6b968611ce3f05c3c04625ba2741cd78ae226aa995b08b729d1ff. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZK6Q2155525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e12c27b19cf33393c2a53757c83b5186197a9b78cf8c585b45efbd796ac3197. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZK6Q2155528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca0bc0e08ad7747db6c5cafdeb8f6972e18f7038a2682c83cfdec3619e94122. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QZK6Q2155529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31148e3d8c77e469b571256ab9819e15d690ef446b04796bea3183d0bb95f069. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZK6Q2155530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aaa755a99ba7b738004210a9e5db40c27361e6d0a22e6c72d7fd3d1ad042484. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/QZK6Q2155532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9ed403d510ebd18778894d0b61decd5ff71f87e673b243ec87e3b48e45a32d3. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZK6Q2155535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e61e69c96bbdc64bbd24a546b6d09053d21861b4b7322ac17e422d66fc295b7. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZK6K2143069.
You Tellin' Me A Shrimp Fried This Rice?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1d65717ba81c0397af7b19ffdcae3dc99fe26c19567477b92a213ddcaff9ad. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/QZES52378361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa10aba4a9d28e37238fa7112d1e178250b0e00ad5a742678635c9f606daeea73. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QZES52378363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d795f43f565d97b58ebd79c367ae3042b17bc76f734352556aa0b5a60663c0f. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZES52378364.
I Went To Hanamura, And All I Got Was This T-Shirt
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f4ee195d136abe3a2928e33169aa75a0a6263f22db6a1d6c13e25e1ecaac79. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZK6Q2356151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68111720c01681e7fc3d47243af59094589735adf57b31e3caf744286e096708. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZMER2317759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x655ccd93f62e2c4bad22f271debfa7b2429f756a78aa363f1a80ae0c1d51776a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZNWV2313551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b58cf56f1f451ceba9faeb1cea9d75d54aebde670853a126ce4613ea2ad3dc. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QZTAX2321988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc862000892e70576327b3945153638c003a7376a8344c398e051e342ae4378b3. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/QZTB72375548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe0a053c1df37ef03550f72d2b656fc649324967cdf62dcff71e826521161652. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZTBF2379994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01dc76c76544beb0aa97533c31210997cfd9cc34579bc0cff4c4e59999ab1da8. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZDA72404419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab10b589120f668a07e45f398851909694fe82d901c45645edc7bfc1f1a5ed13. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/QZNWW2493368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dfe05e6f8f7a0d0eb6436c7db484882cfc942ed3572706bc8648670315cd7ed. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/QZRP52430392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f606386b07513df557c1142ddd007869a3aea99b604579587a2363a5a9df7f. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/QZZ7X2437026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5490698632ac7e25afcc1d80f038a2293f91d9fc9ea83296fa8395288a17614b. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/QZK6P2541644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3478ee7109c79d8493437cb9b9a28a68672dbf2fa05ce9630208c67a75118e5. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QT3F62534998.