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 0xf1ddec7477d07ab4e4dae88861bb4e043913fd825228d7cd82b4869894734018. 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/53ae91db-3724-4fa1-8051-ce5b30d3de5e.json and https://artists.proofprofile.net/proofs/artist/53ae91db-3724-4fa1-8051-ce5b30d3de5e.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 0x434b7633507d16240e6a6b4ce589499cc4210fe973e0ac5a052835036a8dfb6b. 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/3kxbLRt9OHhfHNPGuUQI2R.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/3kxbLRt9OHhfHNPGuUQI2R.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x790ac26c01d075549ecdcf68982f073948f0b1d64c01254a2568dbe436a7082b. 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/6bHu7MmG0vtapM4Oe7zgjH.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/6bHu7MmG0vtapM4Oe7zgjH.
{"copyright_id":"0xc2c52f857dca4a244d43f5a7c67392b0efb9b9e4673cb7384a97778bcf5d3cd2","isrc":"JPU902302518","name":"The Finest","registered_at":"2026-06-10T05:09:15Z","spotify_id":"6I9EkNm3jwcoAvvVDjhavz","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2c52f857dca4a244d43f5a7c67392b0efb9b9e4673cb7384a97778bcf5d3cd2. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6I9EkNm3jwcoAvvVDjhavz.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/6I9EkNm3jwcoAvvVDjhavz.
{"copyright_id":"0x34d2d83508edabd1db8bb0257d1c8ffa3fbd7b76406e9cfb99f2b99fb9be8815","isrc":"JPU902302517","name":"Rock Steady","registered_at":"2026-06-09T08:59:35Z","spotify_id":"70Lq9pJOb32amka3nL5sGO","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d2d83508edabd1db8bb0257d1c8ffa3fbd7b76406e9cfb99f2b99fb9be8815. 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/70Lq9pJOb32amka3nL5sGO.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/70Lq9pJOb32amka3nL5sGO.
{"copyright_id":"0xc2c52f857dca4a244d43f5a7c67392b0efb9b9e4673cb7384a97778bcf5d3cd2","isrc":"JPU902302518","name":"The Finest","registered_at":"2026-06-10T05:09:15Z","spotify_id":"1TRCxLPOchMxv8afQY6FiU","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2c52f857dca4a244d43f5a7c67392b0efb9b9e4673cb7384a97778bcf5d3cd2. 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/1TRCxLPOchMxv8afQY6FiU.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/1TRCxLPOchMxv8afQY6FiU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f007b888092488b286bac72eac71bf55163a2f3a15a8bbe892fbfc9f60e18b. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T20:44:39Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/52r4UesEm2lCMoeB5KQL5h.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/52r4UesEm2lCMoeB5KQL5h.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd88f7e9f84916f5deab829f97d1c87dc4b661fc779f29290e5a5dfb7b82ccf0. 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/6ZvoOslL0s714wPeig3uco.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/6ZvoOslL0s714wPeig3uco.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc6ea6ffb15ab794734180bd77b7a4770cda42d942f504817dc467f057982e7. 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/79oiJSPGgdUUkvSIzrPdmv.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/79oiJSPGgdUUkvSIzrPdmv.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e00163c40af6b660cec2f442f76bc59cc3e188e8164ab8a29b1f031f6760595. 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/3CqGVWeGOb9WEsoXpHItxc.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/3CqGVWeGOb9WEsoXpHItxc.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c13ec667de94c1091a015b05215c4e11b6fea16820f2c2d9d13f259e7352298. 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/4KQOvngAheArBtO4HwMJUK.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/4KQOvngAheArBtO4HwMJUK.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea8a6038b8ef784d00197458bc87073b33e39402630225c87613581f798f7be2. 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/2NBNSKMwqL3Q63NWSNoQ25.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/2NBNSKMwqL3Q63NWSNoQ25.
{"copyright_id":"0x34d2d83508edabd1db8bb0257d1c8ffa3fbd7b76406e9cfb99f2b99fb9be8815","isrc":"JPU902302517","name":"Rock Steady","registered_at":"2026-06-09T08:59:35Z","spotify_id":"3hYJmdsZ1WXE2JIoXrLm6h","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d2d83508edabd1db8bb0257d1c8ffa3fbd7b76406e9cfb99f2b99fb9be8815. 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/3hYJmdsZ1WXE2JIoXrLm6h.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/3hYJmdsZ1WXE2JIoXrLm6h.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7160b6df31d215c8b0dec8859c9e6cc3e0c0adaa45bb7d7af875d0877126db0f. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2ppWiuDYiZOay6K4pXB12R.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/2ppWiuDYiZOay6K4pXB12R.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7576d2f87e655823780cdf5e0d5865c2bd09a4e397e0bf410bc851a69dc93561. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7ov0xbyvSXJahSdK5GC3cV.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/7ov0xbyvSXJahSdK5GC3cV.