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 0x126311fa60a5443546ec427b5293e69c358022d672c98c92c3bf2034e540f774. 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/11cf91e2-df91-4885-bf3b-397996bfe4e9.json and https://artists.proofprofile.net/proofs/artist/11cf91e2-df91-4885-bf3b-397996bfe4e9.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 0x10bf67da553a41d0709ce8ee17081e457c9cb68e223f5b9e9c89b7111dcfa1b8. 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/USA560840081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfdb3ba0acb48c53b57130040fd8ce435271d9388baebf39b64f1d792beeb858. 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/USCGH1553912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91ec9249762652ef7960a1769f92121040be4e68498222eed03fada9c8ba274a. 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/USHM21487091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba09fc118b62b1b18dea6a202ba15b28581811dd1bdd887402e4ad4613145e7. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/USHM91399209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a07a8141ec5d9abe0cae86dab43f5893926a550658e72637d91b3d98e8aaa6a. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/USCGJ1349582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x801a2ab54c7a5ba6b27b4ea7716ba3a95fe5f22244615a898172113e261c3094. 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/USCGJ2001357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb060b1de8ecd7ccf3ae8a0241414c56ce21e546bff21d0f6b7b8dd6bec52798d. 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/USCGJ2001362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c1d34390e7cbc6cede53d0c3b3e2e7854b69b0b80388c40807f519e7a1b944. 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/USCGJ2001370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe06fab66c5ffdfcce06bbfb12d20a474333feef19180a33c9dca2b5932c8942e. 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/USHM81247715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c07268f3cdffdee798958718ea57a332edca183c7c5530c00570b264d242922. 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/GBEBS0400124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce9a971bda9d538bf1bd25e3d4721dad462e5d069d198d2e0cdc5fa11624947. 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/INM129700127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x555ff03799f28a4251110666cc62d0e2840a3e372b0505d577c4c313be4b6205. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/INM129700128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b65c0b744cb3452a08720b704fb3f79da890a2741a1f68c46784982c2a07196. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/INM129700129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1270d88cf942fcaf1e75a35960e8c001b7d9dabc3d5ab68a59046def0720ee75. 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/INM129700132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6117bb32566f3df90f3b0001fea4ef488e3bfb2e48bccefb9bd9e854a6f4c948. 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/INM129700134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f150ec04e5ff19eacc764564de5e6a5aa92e2d6e93b5b90d6ed54e17a3d33d. 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/USA560689817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2316a98b9f320fb38509204e72004a07c8cfda719bc0cf937c6aca7a971025b. 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/USA560673741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x971926f6dc63cb69c9ef98bba304dd648a1dfae7f28ef43ca212b1962005f236. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USA560673742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae4f8c14862c99c3719f22bc280d8145816b3dab8dc5d501072771adf53c8a6e. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/USA560673744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf49d4e341be5424021aebc828ba89a2a62e286da910ec26c37e9d3e926a89401. 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/USA560673745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6dfcf9e9f21bf20c4089240e67371c01cef63613ea9c1ac03a746659a579885. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/USA560673747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc31120555b56efab1ea69e082de545cc583655e57f82ca072082c6a7a898a1. 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/USA560673748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b16de0383452abd604216be59947f7a5e66730261ac7eadf954fdcf9cab568f. 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/GBKRT0712054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f7b7d84d6d1d67b39f25067d86b1e64fce9305c7e9e332895de7d9357d2edc3. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/USA560673637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb017075c6ebe4863ee0bf31ab4e289edc7681077da513ddad74f987c6a08eed1. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/USA560673810.
Kaddi Rab Aey Waqat Wakhanda Armaan Ay - Single
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae16a8663b66ea49cf0c9db73f8eb485a63730af0d83cf330f01c7318675fccd. 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/UKJ8H2404784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x744b4298b26c07c37a46e52b13cb444d76867269dfd6c7f77cef6064a8d35278. 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/USHM82439174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b16de0383452abd604216be59947f7a5e66730261ac7eadf954fdcf9cab568f. 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/GBKRT0712054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x408b781aa4f26679020549bced0df729a39481e3263d7b5f80f8bf3658b2dcdb. 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/USY242419553.