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 0x2942d29f644683e56d6f8e84a83416180fef983b6933b351e1829dc34c7d101e. 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/aa29be98-4b61-4e30-a46b-6b8d335998c7.json and https://artists.proofprofile.net/proofs/artist/aa29be98-4b61-4e30-a46b-6b8d335998c7.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 0x58e2ca68c7527273977a13087a288a4059748097f1f04dae10e281c3172cb601. 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/5Wdl4yFoXOX1xmA53udLyZ.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/5Wdl4yFoXOX1xmA53udLyZ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17703e9374c59be114e41cc015f6e299fc78ee3a227a9ff0057b7d15dd530d89. 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/1PiqBod2OqGJub07PAkoGx.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/1PiqBod2OqGJub07PAkoGx.
{"copyright_id":"0xc4c137c8056b8890ba7114aa67b76cb8939bbe303a8cfde7a5cbe20990a12015","isrc":"ZA34K2200914","name":"leave me alone","registered_at":"2026-06-07T06:03:34Z","spotify_id":"2W7XyDdfLNkCXlzFCLDvbS","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c137c8056b8890ba7114aa67b76cb8939bbe303a8cfde7a5cbe20990a12015. 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/2W7XyDdfLNkCXlzFCLDvbS.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/2W7XyDdfLNkCXlzFCLDvbS.
{"copyright_id":"0x4765487a77fad5aa97348d1dbc24408f5a44fda784027bc684c37f71653a5ee5","isrc":"ZA34K2200915","name":"you cheated, i cheated too","registered_at":"2026-06-08T00:56:09Z","spotify_id":"59WglUODah5Gaby1bqGCft","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4765487a77fad5aa97348d1dbc24408f5a44fda784027bc684c37f71653a5ee5. 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/59WglUODah5Gaby1bqGCft.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/59WglUODah5Gaby1bqGCft.
{"copyright_id":"0x1f0cd93387e39980c7e1e97ffb2a50a802baf9cae4a15ad730d1600d5fbf031b","isrc":"ZA34K2200916","name":"come close (feat. Ayra Starr)","registered_at":"2026-06-04T11:59:34Z","spotify_id":"2u5dBIBam2FTwYsgsptJyj","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f0cd93387e39980c7e1e97ffb2a50a802baf9cae4a15ad730d1600d5fbf031b. 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/2u5dBIBam2FTwYsgsptJyj.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/2u5dBIBam2FTwYsgsptJyj.
WATAWI (feat. Davido, Focalistic & Abidoza)
{"copyright_id":"0x93834335cfd69a61133fc3cdb700822c14c7dd0612b84a2dbfad06583d35fa4a","isrc":"ZA34K2200785","name":"WATAWI (feat. Davido, Focalistic & Abidoza)","registered_at":"2026-06-04T12:56:14Z","spotify_id":"0mGcsaIOK2wL7ECV3BN5XD","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93834335cfd69a61133fc3cdb700822c14c7dd0612b84a2dbfad06583d35fa4a. 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/0mGcsaIOK2wL7ECV3BN5XD.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/0mGcsaIOK2wL7ECV3BN5XD.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c940b6f10c574decdb0ddc867f7cef6e763ab5eccd3150af734ee93067a3248. 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/4IKZRi9MTwEddcB6hSYf1u.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/4IKZRi9MTwEddcB6hSYf1u.
samson and delilah (feat. Mayra Andrade)
{"copyright_id":"0xb0177bb595675ffa9968174fc61a859e1d1f39cfe514f5cb6481f4a93da668f5","isrc":"ZA34K2200918","name":"samson and delilah (feat. Mayra Andrade)","registered_at":"2026-06-04T08:21:04Z","spotify_id":"0grBASdhUSTmeDA0ejensM","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0177bb595675ffa9968174fc61a859e1d1f39cfe514f5cb6481f4a93da668f5. 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/0grBASdhUSTmeDA0ejensM.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/0grBASdhUSTmeDA0ejensM.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d4a0c31411badeea1a1d34ded591142ed295bb347df09f3620d7f345d1fbd4d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3rRKu7N2zRgb0pF9DLrrBI.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/3rRKu7N2zRgb0pF9DLrrBI.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f10d705abc1117673f9f766837f203a5ad23e462a07bd59f8a555c2b0fd7909. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6bW7YnPQQffit1iwule5Vv.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/6bW7YnPQQffit1iwule5Vv.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee222e1128dee4995bc6549444b8ea96ef09083fb7184955359cb4d18363c8bd. 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/1RQPm4uK5aNwYsZ7duyNJe.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/1RQPm4uK5aNwYsZ7duyNJe.
{"copyright_id":"0x617babc4e3be150e276431a470103e12732d8ec4f60e9c735cd6ce1285cf6f2a","isrc":"ZA34K2301255","name":"HALLELUJAH (feat. Blaqbonez)","registered_at":"2026-06-04T07:48:57Z","spotify_id":"05pGxMUPDOu3lQVDMg6nqS","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x617babc4e3be150e276431a470103e12732d8ec4f60e9c735cd6ce1285cf6f2a. 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/05pGxMUPDOu3lQVDMg6nqS.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/05pGxMUPDOu3lQVDMg6nqS.
love nwantiti (ah ah ah) [feat. Joeboy & Kuami Eugene] [Remix]
{"copyright_id":"0x195e85b10487790c05b14dd64b0248a2ed3c670fd5787f9bb62b80091e713f80","isrc":"QMEU31915738","name":"love nwantiti (ah ah ah) [feat. Joeboy & Kuami Eugene] [Remix]","registered_at":"2026-06-01T15:56:26Z","spotify_id":"140dx97IbJbQhIMd7AaHeb","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x195e85b10487790c05b14dd64b0248a2ed3c670fd5787f9bb62b80091e713f80. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/140dx97IbJbQhIMd7AaHeb.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/140dx97IbJbQhIMd7AaHeb.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c529f8144ee0f2ebd29c07d284aa4840d15b3b064723b1c6b872635470754ab. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2Xr1dTzJee307rmrkt8c0g.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/2Xr1dTzJee307rmrkt8c0g.
{"copyright_id":"0x9203ea08e197d18f69c953b764f732a785cfbceabc35ccffa53ec806c313927e","isrc":"QMFMG2322113","name":"40 Days (feat. CKay) - Live Session","registered_at":"2026-06-18T03:09:51Z","spotify_id":"5lLVbvcaSenZiGPxk1ZPd2","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9203ea08e197d18f69c953b764f732a785cfbceabc35ccffa53ec806c313927e. 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/5lLVbvcaSenZiGPxk1ZPd2.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/5lLVbvcaSenZiGPxk1ZPd2.
{"copyright_id":"0x1f9272bce78808aa44fc7901c5a2ad194bf45ced119f204f2863373dcd0e747b","isrc":"QMFME2359006","name":"40 Days (feat. CKay)","registered_at":"2026-06-06T18:06:28Z","spotify_id":"1yPPtXZy8bngTyJmaglcZC","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f9272bce78808aa44fc7901c5a2ad194bf45ced119f204f2863373dcd0e747b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1yPPtXZy8bngTyJmaglcZC.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/1yPPtXZy8bngTyJmaglcZC.
Black Panther: Wakanda Forever - Music From and Inspired By
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a7fb50107335ebc44e43f919bf988a02d7c2275fb1c36beb0696026541d18b. 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/4m8YqoUZLToSUjpNmb7m5X.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/4m8YqoUZLToSUjpNmb7m5X.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x103525f2092e2e38adba7c3d4dc491edb8a72451fc0b872a247491253f914d0f. 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/5NVb7Jane3k2s5aw8UnA1A.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/5NVb7Jane3k2s5aw8UnA1A.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad854d431080c246f6ca5b25f89cb719480efc4afedc1c50b4b99a6e94f3d25. 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/6ylNT9nQLTOglCEHqvFnGo.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/6ylNT9nQLTOglCEHqvFnGo.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c3f9567ab9a19ac451bed471e1b460049aa02fde276d13987f74ac3e8ff6c3e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/45LaZdi03OTCIyUXT6WEK3.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/45LaZdi03OTCIyUXT6WEK3.