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 0x87129136fa14f270d546eff99a6fe66aece89ab8d0bcd077fbbff129a577a7aa. 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/a2644f25-f1f6-44d8-8c62-18a0ee222db5.json and https://artists.proofprofile.net/proofs/artist/a2644f25-f1f6-44d8-8c62-18a0ee222db5.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 0x6abc1b166a2a03eb97f97825c29498335aec1e034d82b194ad1a6daeedacdc8c. 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/JPVI00800280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ac479159bfb8b8676b9d9334796bb96e6754ba6a0e3e48499dca062eab98afd. 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/JPVI00800310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x226f703dd9c1ef387e11de1bd0732f0345297e4af411faf24e7404ca2d0a35f7. 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/JPVI00800340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fcc1409993143a133f2a367e02b79a8e9b5b11a6eef5fd9936ddff2c198e060. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/JPVI00800350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c5d64b47b3fa6e721b9c4a61216379f6b750966649edfd7dd9825c498b5cfb. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/JPVI00800380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6abc1b166a2a03eb97f97825c29498335aec1e034d82b194ad1a6daeedacdc8c. 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/JPVI00800280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b803e22b76be27656c47350cb97a7553241cc2a41098509ba62d5fe000845ab. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/JPVI00800300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ac479159bfb8b8676b9d9334796bb96e6754ba6a0e3e48499dca062eab98afd. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/JPVI00800310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x226f703dd9c1ef387e11de1bd0732f0345297e4af411faf24e7404ca2d0a35f7. 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/JPVI00800340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fcc1409993143a133f2a367e02b79a8e9b5b11a6eef5fd9936ddff2c198e060. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/JPVI00800350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c5d64b47b3fa6e721b9c4a61216379f6b750966649edfd7dd9825c498b5cfb. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/JPVI00800380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6abc1b166a2a03eb97f97825c29498335aec1e034d82b194ad1a6daeedacdc8c. 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/JPVI00800280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b803e22b76be27656c47350cb97a7553241cc2a41098509ba62d5fe000845ab. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/JPVI00800300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa618eea02ce46bec4bca8756842b9365a3419973dab4b1345d491515b6132e07. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/JPVI00800320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fcc1409993143a133f2a367e02b79a8e9b5b11a6eef5fd9936ddff2c198e060. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/JPVI00800350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02a1fb03248bab6f211127db497a6eb044875552191b5a65102271f4cacc4522. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/JPVI00800360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c5d64b47b3fa6e721b9c4a61216379f6b750966649edfd7dd9825c498b5cfb. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/JPVI00800380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb772dcf7c00bfcdd0559bc196eefbf0df5428314ae7f7ce81799dce558decb5f. 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/JPVI00800390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb909721e2ddf9a6d2c331b071ad62a9753d556d6be1161694934ba884f5311. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/JPVI01008140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe545b5fc1e7904c17546e7ab498e11dcba4299520752c146df4ef8c0d1e357. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/JPVI01008180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb909721e2ddf9a6d2c331b071ad62a9753d556d6be1161694934ba884f5311. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/JPVI01008140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe545b5fc1e7904c17546e7ab498e11dcba4299520752c146df4ef8c0d1e357. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/JPVI01008180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb909721e2ddf9a6d2c331b071ad62a9753d556d6be1161694934ba884f5311. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/JPVI01008140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe545b5fc1e7904c17546e7ab498e11dcba4299520752c146df4ef8c0d1e357. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/JPVI01008180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b7da2e0e2aa9b424bde920bd87b479c106ef1ab516d776455c5a408d35cde89. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPVI01220470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96209a70e4180505aece9fbf0c07e29421b4ad07f5c395524ef14f8b625ecea. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/JPVI01220480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f5f280ff6611943a56ad673d040b5efd1af877a538c0815435974532f12b56. 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/JPVI01220520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b7da2e0e2aa9b424bde920bd87b479c106ef1ab516d776455c5a408d35cde89. 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/JPVI01220470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b7da2e0e2aa9b424bde920bd87b479c106ef1ab516d776455c5a408d35cde89. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/JPVI01220470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96209a70e4180505aece9fbf0c07e29421b4ad07f5c395524ef14f8b625ecea. 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/JPVI01220480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe00e19bf58b371b6dbed3286062f5e706b93d8a5b1f51580c93146447d5ca576. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/JPVI01707920.