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 0x64193b3abe27571e780131ed00ffb05f2c37dae8a7260ca2ffae04e84ae17be5. 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/ee15fca8-ca17-4347-8034-2dc1e2a05e45.json and https://artists.proofprofile.net/proofs/artist/ee15fca8-ca17-4347-8034-2dc1e2a05e45.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 0x898f6a110deda8a3d8fd5f0e272b34a81a93c79111a4567dedf6beb6c2af601d. 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/QM6DC1857196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x604e5cf3baf2f5d1c1be70da4c8a850a21d7656abe58fd2cda5c0730d1788ddb. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:11:04Z), 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/SE5BU2066144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dbd8aacf2cc04b749c51f43164fa519238e5756ea6f5dbefa7ee4b21cfa6367. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/SE6SA2054996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f4fc0e4d1b16711e451c39b908ba77922ef1505b9daffd8981cddfbaa7dc2f. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T04:46:52Z), 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/SE6QE2081432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90de5d5ce382e346e4c629124313893129e8d16cf380380f7baf2ad9f62ef1bf. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T03:25:17Z), 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/QZK6N2287173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41df042fbbc636fb958ab824043c6f93011c53204b64b2b195cd8725d570b54b. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QZK6N2287181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b14d0f463b3a1c17e55cff0b91919d139a14f59428bb8c6bc75daa396cf62d4. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/QZPLS2241091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4f0d3f5fc4a68729a82cbb0ddc0d247b5b90579e2b44ebddb9bebf782263a81. 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/QZNWZ2215869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc253278f6081abb8f1a3b39fb202428f704ff37371870e4fe68bd04b867235f. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:40:28Z), 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/QZDA42446639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2925ac3bdd0eb14779ceda7b26bd4c52f3bbd9a84e5bb8f46902aee98e68fdbe. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZRP42441349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc7a2b41488f02b4c6bcb4d175b085d61d4a392d4cc878245fadf7c6ea5f34fe. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZZ7U2471931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x380cd285889c1e7cbaf422542e1a4990159b00d9f8262e0503f99b6a55a973ab. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZZ7V2430627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce556a60ae080ba8075749c73dd40671a059aee3452f38740eafb505a863e9a. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T08:04:27Z), 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/QZHN62597137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c8d949a95bf3c63ae42a363160175012f3078dd8438f9b6adc48a5c5254c13c. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZTAX2571965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2381d1df1514f5f606449b1e6601a962c6f55d5a9cd07339cb1d7879a796d5e2. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZWFJ2567169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00acd1464baefa4d7f3ed4e26b490cc8b75369f60644bc891ecb5ed54e993219. 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/QZWFH2561429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x334e97b637b88da44da8691ac0aa9e4dacb1cd4f51816709093e7f28af89e1fb. 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/QZZ7V2542557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ecbd678ac2ec51a7fb674672e838b9d37e411e37fc8859ce3258571348b9fb9. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:42:37Z), 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/QT3FB2518923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e8e1d6a11f4bcff427b32b6abc2611ef53a576872b0c9007e94dab549373884. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QT6EB2586433.