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 0x1f16250d4b9d0350da1c294a9943e4eb830add31eb50466d23558b17e45aa7fb. 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/495045fb-76c4-4efe-aa34-837820af074b.json and https://artists.proofprofile.net/proofs/artist/495045fb-76c4-4efe-aa34-837820af074b.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 0x984a0c6173e15062e4c1efdadd414914e96c3581ca9a90e4ad379f894d99d091. 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/DEZ901800069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31828a553f34af3b8bfc86816d130a9b8866185a424651d3d97b917e0e76c4d1. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:47:50Z), 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/DEZ901800072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7387df948f5fa65023d3a6d5693adaaac961efdddf87532f2e3715abf8b746c. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T01:58:00Z), 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/DEZ901800073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9622369c6562704929245088396392f8bd01fa997b247194ed3698a7800dee74. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:16:31Z), 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/DEZ901800076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33aa886dd57e3d023361bce62dba82fcdc5940482f21990386a0e861b30b57b3. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:03:39Z), 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/DEZ901801400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8088a176ba3479412ea32cc2755e3a0f59675cf07f0d17120992ae3dc493f7. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/DEZ901801401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f5724f08f2c63778efbc8424ece373430a9c8ef1c79ec1976f53d685a36a63. 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/DEZ901900339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6869867f194466f9d8ac31ee88986d63bac37e9b04ba059000759e55fbbf55f. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/DEZ901900342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed6295a8d5bff2b8acbb5cb22b88032219f7ba7b392017aa1f733ed502cd3d4. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/DEZ901900343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a2043aaab6dc4675cede65364a69a0636c5b4bb19dc9f6d4f47f3f3b32d0c4. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DEZ901900345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc129e138f0a12dcc75018c05473b348e69995fe4421360e69034981ad3f53bd. Chain 2 (Bitcoin): anchored in block 958204 (2026-07-16T00:31:06Z), 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/DEZ901900346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6395279e59897c2437ef5027c73909bd9225d381bdbbf93bb3ecd810a8b462af. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/DEZ901900350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ef5a6b3da3c06de24cb909ccb9f7f3e5bf6fa6f992cf5aa66a86bc5928dc9a4. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/DES372000338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86470d678caa18feae26f5ab2623b20f1285872b5f6af9e7a15de22075eea4ab. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/DES372000331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1ac6f7c61bb772c565ce74ac8f2b9cacfe6376120e2f53519e2ee92a811e81a. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/DES372000340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f2f9f6fd97736fed0c086aa58d7800e9cd727bf23adf1edf86c5c5eddebeeb. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/DES372000327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42beb3c8f38bc436e6fb5dd10b94130645d94026b88148adeb7f91c08aef8dcc. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/DES372000329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3414f9e5ed1f955551660fd1a26bae2a9fa442b1f9b1ad17f0184ba4a1d98273. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/DES372000337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e2b0a3f68b77d786314928f0a53300b6e72a3127102eddee5a371051a1a3a91. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:26:34Z), 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/DES372000336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3bc232d4fa041ab8c94c6661f8e89fdd14c1cf0d5438965bb9c86b5d49debde. 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/DES372000335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x183fb39db505cbb82f542fb4724779920d64433d064fdc7dd23aa4910164f43c. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USCGJ2219906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x174d729ab3f4200c5a86a94f0027a4d1b66d32498542e788689213a943d3bfbe. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:43:45Z), 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/DEPI82322523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67fc60e70166a9b59b86a76f50a5ecf3a22cd46f4fbf0b829cfaa67feed0f4c. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DEPI82322521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0723f8e9a25d21d5864ac55da73463588dfc763b91150c46b666c55eb7999750. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/DEPI82321965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5be2b51e2e1b293f2be0b413a8386ef06885f29384d3cef3923ca486e38595f. 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/DEPI82322522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5efb543821c49355979c9c7501b95f0723223fc597ea7f66a1deeefebef0484c. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:01:31Z), 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/DEPI82322524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd00158dff8018526ef27b678f903ca085e30abebb8c472f265ec375f5d47b889. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/DEPI82322525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e37b8f8b15159896d0e269648c2e1c055b4d61905fbf62b4e3787e23d57e311. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/DEPI82322105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bca3725b3ce29efd2ddb49e933a6dfc882b63c8d2f08f91c89d28266974d28a. 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/DEPI82322526.