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 0xd655fe9df7f9c1c3b039eef0231edaf9620687b2cce6e46a679202a9854ad10a. 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/f5e9585f-b6fe-4f3a-849f-593273e2cb4c.json and https://artists.proofprofile.net/proofs/artist/f5e9585f-b6fe-4f3a-849f-593273e2cb4c.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 0xcdc31974a94bdf58e3583bcbae5dca4f79766f4f5856ed2f5412430ad8bb11e6. 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/QZFFG2005001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2603bfa4e025a1fce48f965062c20edbd4cc0003e79d0f776bc85bcedbdc358. 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/QZFFG2005002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc5ab52aa9ce30b82d8219c8991398cbaabe7427aad8676015aad68aac8f22e8. 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/QZFFG2005003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe96666225b4361708d3a800e1591b5115bbfbc2e418ba90382b523721e90bb37. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZFFG2005004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x167bc40968f450506d34c01ca6d6e6f35246eb3954d2ce8ef57323346377661c. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZFFG2005005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0492c872415715ed98a2556369f8ebd7838579838d11673b30456a9fdcfdd53d. 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/QZFFG2005006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd0d5d7e5b08c644a817cca4f0260f71033df7b0c2d67c2bd0f868839f9604f4. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZNWW2214965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf03c5c500d5f140647911fc24f79c5bfaf630940a7a54522ef39ca6ad3668467. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZNWW2214966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83cf2fedf077dcf77181aacc33bc0970af8a32b8f6cfc5b1979e9f42ea5d69d1. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZNWW2214964.
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 0xdbd4f57cb3e988e31635c93001885c975524fc0541f799283c810010242a76c0. 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/UKR6V2210156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4086f15c793a1913d4ece5c74715a004435135f59d894dba0f15d59696d7035. 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/QZTAS2169319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6944ae859bbe5644a7b22134aabce125a33419aaa8301906946492a8f024749. 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/QZTAS2169320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1918db407e93e31b410b52a42fe192b2b948a80953722c2f3540d618d0cb335c. 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/QZTAS2169321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad790742d0c6fcb97c097aa2f98ca77c9ae0011bb5bf4b73a2a042aaaba117b. 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/QZTAS2169322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x183a6d360f6a1779c5d36452f88d4da8401af11ab7782aa26f539237ae82ac89. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZTAS2169323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc664affa9435a89c9440c5708d2b0e0be591e8177fc3af16a4954406026f8949. 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/UKR6V2212147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb25655d3683ca1f14ccec53db15c735ecd57cc50b7f0ee1bf268b47e82d879ac. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/UKR6V2212153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfcd9f951d2c9dad1710f429c7dc0c51496da54ed1256618346e7d9a4eeaf6e5. 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/UKR6V2213125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x265d50072f74fe690d005bb4b876f0a057c5212617dbc697bd36f9cfcebc9429. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/UKR6V2212358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x024aa37448cc2579462875b6ef4ba577df1cc12cb3af9b5c14244ec04c673b13. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/UKR6V2213126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bc369ea9e7cdefc865a655df95ca9c70e433c85e14d76af9310db46de359ca1. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/UKR6V2212357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x669e97d4c8e2eef6808cce9a8c2251706a2a58b917d498b6f6ccdf1795594c50. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/UKR6V2212359.
Windswept Fields of Wyoming - Applefish Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8291898d217277b09ce9648f2580469560f52eb03b66d7aa33157347bbcfa49. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/UKR6V2213129.
Before the Arctic Winds Return - Antarctic Wastelands Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x460ebd54481f792b64f59eeba593dca437c6d3a8c34bfc583f5bf1a437b46210. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-21T16:42:08Z), 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/UKR6V2213130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0297bb55f414e8d360d9163724479d9be787192e4b4b7c0293b0e85f869cc95. 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/UKR6V2213131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd137e48eac3f4fcb31a7926a47a507732d53a67c3307e901707d8dea802ced1c. 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/UKR6V2213134.
Mirror Pond - Good Weather For An Airstrike Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75a62d6331c8be0b9328dc4287005baf296a566cb085c50624effe060525821. 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/UKR6V2213136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x142176fe770d25cb0e9ba6d98333b7ce17c0c930effac637e93862b48fdca279. 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/UKR6V2213137.