1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xf1ca1dd0c8c3b470eb2214ee6de95aac7e1bf127048de86f31ab174e6047300e. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dfbd6076-4fc7-49b9-9883-ab182109ea23.json and https://artists.proofprofile.net/proofs/artist/dfbd6076-4fc7-49b9-9883-ab182109ea23.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x513b89ad34f4cd3cad391f45af274735577b32f5ddb7340ec94d9572c42730ef. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1FRwwhxIF8oBIBzD6SBYcu.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1FRwwhxIF8oBIBzD6SBYcu.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x016883aaf89ae005543d69da1c57c8cb99ac04f257697272600b346984fa8760. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4wiUAWl3QoOOA6DZTo4D73.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4wiUAWl3QoOOA6DZTo4D73.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d8e9e316f52e69554eebfb8ad0d3429274d211235d837c862fec0394f785e57. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3GDPQVjCQj1WyJGJhAj53E.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3GDPQVjCQj1WyJGJhAj53E.
{"copyright_id":"0xa260ef0e8c52ea74ef790a5ec88f020c2f72b7c9a21c352ee038dcac0f8f3c01","isrc":"GBUM71905047","name":"Whenever You Call","registered_at":"2026-06-09T07:39:04Z","spotify_id":"6HqWSkJ1ACpJcUaLurZr3K","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa260ef0e8c52ea74ef790a5ec88f020c2f72b7c9a21c352ee038dcac0f8f3c01. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6HqWSkJ1ACpJcUaLurZr3K.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6HqWSkJ1ACpJcUaLurZr3K.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab37db39b3ade7dcefdaabf5786f06eece929ef62f81d73a7dc3294d5247a1a5. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6i0r3184e5IS1kc9YvQqfz.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6i0r3184e5IS1kc9YvQqfz.
Rico Love Presents: Emerging Women of R&B
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d8e9e316f52e69554eebfb8ad0d3429274d211235d837c862fec0394f785e57. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0MxGmhEgRVf5cROgGq8IPI.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0MxGmhEgRVf5cROgGq8IPI.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab37db39b3ade7dcefdaabf5786f06eece929ef62f81d73a7dc3294d5247a1a5. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6zyjqwXVdXcA5Bvoz15p3T.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6zyjqwXVdXcA5Bvoz15p3T.
{"copyright_id":"0x3d6a5a6bf8836f2617b2185c7bdd85fa51bb289f17b8de24aba7ef8ca4531a20","isrc":"GBLFP1841726","name":"Fake Love","registered_at":"2026-06-10T05:52:42Z","spotify_id":"79ZyHXM9MItv0UdqHr2mmc","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d6a5a6bf8836f2617b2185c7bdd85fa51bb289f17b8de24aba7ef8ca4531a20. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/79ZyHXM9MItv0UdqHr2mmc.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/79ZyHXM9MItv0UdqHr2mmc.
{"copyright_id":"0x5628af42f7f8c4c25c7db58e3ebafb632879a4091ef849c95ab8fb1da3e4be23","isrc":"GBSXS2000167","name":"All Me - Pt. 2","registered_at":"2026-06-18T04:51:34Z","spotify_id":"5ZeBsRqz3zMGSeb1omYvuN","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5628af42f7f8c4c25c7db58e3ebafb632879a4091ef849c95ab8fb1da3e4be23. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5ZeBsRqz3zMGSeb1omYvuN.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5ZeBsRqz3zMGSeb1omYvuN.
Surface (#SurfaceChallenge Edition) - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ba2262e0387587988442dc7168f7816cd87232af656140bc22fe668c0d6c92. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2dOPl41b05aLnx67Tdm12O.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2dOPl41b05aLnx67Tdm12O.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd8fd4d377ccd9ecd8c8e4f647f518e3d5991f6960df941c766d3d8b9021f993. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1LVrdiLpaU7sEXKa562ynn.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1LVrdiLpaU7sEXKa562ynn.