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 0x894db5f6f4255c890435da4a8140795506aa05c15e260ab24a87718bb07d750a. 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/9107a03f-e84b-43fa-b5ef-a2cb85b8b80e.json and https://artists.proofprofile.net/proofs/artist/9107a03f-e84b-43fa-b5ef-a2cb85b8b80e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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{"copyright_id":"0x5473f5a6d8acbeced4d889ef0c983c7d35a6dba567dd3d447df5eaabd004b0b2","isrc":"DKS381900302","name":"Hvis Det Fed","registered_at":"2026-06-18T04:40:50Z","spotify_id":"6orkwbZBgBO81nuS2LzXqU","type":"track"}
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 0x5473f5a6d8acbeced4d889ef0c983c7d35a6dba567dd3d447df5eaabd004b0b2. 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/6orkwbZBgBO81nuS2LzXqU.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/6orkwbZBgBO81nuS2LzXqU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4509d482e37219cff63937aa77560f67dd9f6c73bd6e842cee4236da4ad97063. 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/7GdBDvAdAlARSo5FUzeUuC.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/7GdBDvAdAlARSo5FUzeUuC.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36e8f8c5eb5d184729c424e83b7033ed21811715620e4ef8fb82a318c4b8f5f4. 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/6rUXtXIBtNykHEEtoxXAvl.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/6rUXtXIBtNykHEEtoxXAvl.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4c0e9b6a1281ad441fc078704ead898e305da083b7e4468b2fa53105862c7de. 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/4Fdl84CNDMkLHL6azy9ym0.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/4Fdl84CNDMkLHL6azy9ym0.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f668d6d686f84b4b08ac0c10ea03b8c4013e4cdad93a676112c1cf16347237b. 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/6hMlaUkrnuXbUythi8naym.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/6hMlaUkrnuXbUythi8naym.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf728181e6d8760785574fd7455a7632aeaac3228189ae9ce835b6fa8d6b3d62a. 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/3qN5TwbfgmzouXggPETL8C.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/3qN5TwbfgmzouXggPETL8C.
{"copyright_id":"0x9d324ceff8113e4e4e223a7f85245a68aa9d2cfffcaefab5f5f0baa85dcbd4d2","isrc":"DKS381900201","name":"Engang Min Bror","registered_at":"2026-06-08T22:32:28Z","spotify_id":"78a0v05SZVaFyw81vxyOXh","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d324ceff8113e4e4e223a7f85245a68aa9d2cfffcaefab5f5f0baa85dcbd4d2. 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/78a0v05SZVaFyw81vxyOXh.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/78a0v05SZVaFyw81vxyOXh.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd751857e7c2d31eaf20626966468121c6bef866a4115aefa1952f36e1be551. 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/0B06qDnFnmbowKCkdkcN5k.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/0B06qDnFnmbowKCkdkcN5k.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e83a385e02965221a09c5b101c62dd7093eaff2c1a398edac37a55213a06d5d. 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/2zCen4KdoJFO8HEZru1emo.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/2zCen4KdoJFO8HEZru1emo.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadb092be2a00e79014dcde59951231b31ccaedee38cc893890416e65c021adf1. 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/3aHOZHBgxfZ91iznEIE5UV.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/3aHOZHBgxfZ91iznEIE5UV.
{"copyright_id":"0xcf98ed14185b6792a78b2328ccd95e8fc2cd2cb00536d3f33e7cdc06e3509255","isrc":"DKS381900101","name":"Smilets By - Remix - Bonus Track","registered_at":"2026-06-07T02:36:06Z","spotify_id":"0C728kRKO8ocqMj9C7NWLR","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf98ed14185b6792a78b2328ccd95e8fc2cd2cb00536d3f33e7cdc06e3509255. 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/0C728kRKO8ocqMj9C7NWLR.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/0C728kRKO8ocqMj9C7NWLR.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a5027c1dc05a10a4a25a2e57142d321f1d5e1a10065fa9059eca3eaa3cfa0b. 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/2i8eU62hngnndIzN46XlV9.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/2i8eU62hngnndIzN46XlV9.