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 0x7c6eb32934c5efa54c34a01036bc8c985ba3c37a261ea14ed4aa232780761c78. 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/23835390-3b19-48ac-960b-1ac5dfaecc1e.json and https://artists.proofprofile.net/proofs/artist/23835390-3b19-48ac-960b-1ac5dfaecc1e.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 0xbc9292a4ec70776691e4a0a7a92c37dba826f408a10f669364b57aefb6b15b44. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5bqGbstv7JcLRb1TuQAoGa.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/5bqGbstv7JcLRb1TuQAoGa.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59139b4fac21622d3fc12b8ee59e96c755eaaa17a5e61f83ab416acaf1abce88. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0KDZQorWDhVEUBmBgVyBIU.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/0KDZQorWDhVEUBmBgVyBIU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a4c170de31ef44543280685865e4afbe2730e1ab2a1a39dcfe5c049b844059b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/11tEweYMzLBUqQRQ0Rrybc.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/11tEweYMzLBUqQRQ0Rrybc.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x286409ce1d8afd08fac343e9e475a4735429c68ce01d713ec437bd01fd911858. 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/7aelzk9mfjxBg6nlJghMVl.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/7aelzk9mfjxBg6nlJghMVl.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a4c170de31ef44543280685865e4afbe2730e1ab2a1a39dcfe5c049b844059b. 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/28O5i3dmxX1kG6fvONPk4E.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/28O5i3dmxX1kG6fvONPk4E.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f0e661f57bb438da6e28db6cb9b6cde3bbaf16f48012303e9e104ce83b83349. 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/6VJKCCCwkuihC34GoAdgYi.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/6VJKCCCwkuihC34GoAdgYi.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1afaa7678b950b3a54cc4f8d54d1cef4abc7d38548b3d902f121c7c37abc88ae. 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/3fVREDLOdjl3tLHZU6L9JB.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/3fVREDLOdjl3tLHZU6L9JB.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa6ec4d52ba199d814a0f0c217c0385e07da73f2755ef9c8a62c8e44279bd4c. 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/2EMqbhA9Zi3V2aSe5uUoWp.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/2EMqbhA9Zi3V2aSe5uUoWp.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa81ed81eeb101206a756805c3a400dc52eea98c87b55d941a0019c0f4ca1e83. 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/6P4cJvoFsGpOyejl46AVIr.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/6P4cJvoFsGpOyejl46AVIr.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x937c8f5224afe59b113bb8461bdaffb4cfb73d629986758a83e38b8af7ce7bc9. 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/55cMVIUKYUKl9kJd4BeZ7Q.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/55cMVIUKYUKl9kJd4BeZ7Q.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1601b32a7ab5b78fd6c01ab0470038c41e48393e5b6b327ddadf96bf7f4ee491. 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/7Ads2tzFj9JR3cY3EuURvb.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/7Ads2tzFj9JR3cY3EuURvb.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa565f91123e80ad93dd54814abd38e24b8a96f811addc50df306caf09240c8db. 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/4NgbC1qHg9Us2Eo99mBZqG.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/4NgbC1qHg9Us2Eo99mBZqG.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59139b4fac21622d3fc12b8ee59e96c755eaaa17a5e61f83ab416acaf1abce88. 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/5SDcfmRWrUEfnxZsqOsdJo.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/5SDcfmRWrUEfnxZsqOsdJo.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9292a4ec70776691e4a0a7a92c37dba826f408a10f669364b57aefb6b15b44. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/33lp34i8EbIgfRRt1ZQWit.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/33lp34i8EbIgfRRt1ZQWit.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x183be43c8c7d306ad682cd2c2d587dabd302cff52ddb7d4f2c7fa51d9f80b9d1. 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/1FdoNXupP4nHxzGHFeAm7X.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/1FdoNXupP4nHxzGHFeAm7X.
{"copyright_id":"0x2dcaa060cad2c5bb3865a87ad7c32d938dd5f8c23dcee3e201e3996e9b403be4","isrc":"FR96X1999799","name":"La sauce","registered_at":"2026-06-10T22:28:37Z","spotify_id":"6MQEibiIiDRd8Jm4bVGN9A","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dcaa060cad2c5bb3865a87ad7c32d938dd5f8c23dcee3e201e3996e9b403be4. 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/6MQEibiIiDRd8Jm4bVGN9A.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/6MQEibiIiDRd8Jm4bVGN9A.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x682384f76cabcec8e4b2df2f80fa20bfe89d76154df755210509671f4405e41f. 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/4IyIepOLYHVb1CqBXHru1X.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/4IyIepOLYHVb1CqBXHru1X.
Compilation Nouveaux Talents Believe 2006 Fête De La Musique