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 0x1101ff603a6b553cc238b205de0122bae07539b203df7dd122ba086c955439ea. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bbe14608-202a-4892-a7d8-d89cacaec046.json and https://artists.proofprofile.net/proofs/artist/bbe14608-202a-4892-a7d8-d89cacaec046.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x645b3a19dee358efbe7b1f374d2899fa6c0d3aeadaf0347e16bf2856cd72f01d","isrc":"US22H2009011","name":"Bring It Back","registered_at":"2026-06-22T08:37:40Z","spotify_id":"4MqyRcFmSwG1sYlGlk97z9","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 0x645b3a19dee358efbe7b1f374d2899fa6c0d3aeadaf0347e16bf2856cd72f01d. 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/4MqyRcFmSwG1sYlGlk97z9.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/4MqyRcFmSwG1sYlGlk97z9.
{"copyright_id":"0xa548b6f6e778e18dbf37fbfe4688cb6a94990fa915f4207afaeba45499bf2493","isrc":"US22H2010121","name":"Real Dang Good","registered_at":"2026-06-21T09:51:16Z","spotify_id":"6ANlybhpYDIYjbghNVHsXw","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa548b6f6e778e18dbf37fbfe4688cb6a94990fa915f4207afaeba45499bf2493. 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/6ANlybhpYDIYjbghNVHsXw.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/6ANlybhpYDIYjbghNVHsXw.
{"copyright_id":"0x81bb461a725fe2a7fbf7ccdb9d5b5d9cc0f7e213661972939a7939d3c1df52b0","isrc":"US22H1905231","name":"Front Seat","registered_at":"2026-06-04T11:57:02Z","spotify_id":"2EOrOCwts6zSEFAlFb6aiu","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81bb461a725fe2a7fbf7ccdb9d5b5d9cc0f7e213661972939a7939d3c1df52b0. 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/2EOrOCwts6zSEFAlFb6aiu.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/2EOrOCwts6zSEFAlFb6aiu.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06148fb3960de83e03f449c6d88aa2a7ab357baba0a474fad7c601f8cfc0634d. 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/4g4kX2hv73iHj2UNKWg5EP.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/4g4kX2hv73iHj2UNKWg5EP.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9153dc186b84282c472b814f5595ee2bda998dba5ddb4d8e072ee7c7f05fab7f. 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/6lFql5AEwXZxRCbx20cM0n.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/6lFql5AEwXZxRCbx20cM0n.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a9248a47c27407369083ef8f33ea4a527fa844d49d1328a4d6bdcf6410e451. 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/2342MZ3mQ3aLkdqEjpfb1v.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/2342MZ3mQ3aLkdqEjpfb1v.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08749faa206203e1c7532417102d4f8485b869333fa8d9df3c8f792d9fff17c7. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/47lK0uIrpdfUzQMSqD3LK8.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/47lK0uIrpdfUzQMSqD3LK8.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21780b38b2c4a213525a4197576fde4e96697cf6db23d92aa40e99e60fa90734. 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/65HVLt6zZimZU1nduu39AJ.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/65HVLt6zZimZU1nduu39AJ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x467f37c4c94f4e65229af178c14e40696e24fd55bda54a7ac8405f1de481cfa5. 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/2Ev6Tx2DmczNWHNDaJ43yS.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/2Ev6Tx2DmczNWHNDaJ43yS.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c7ad3a405ff87fa3e8e0f370379379fd00e7420613e57773e1edec9eabcc28d. 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/5UArWb4gjsPzD0BTY0FGct.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/5UArWb4gjsPzD0BTY0FGct.
{"copyright_id":"0x4ac55dc75a8236561b47b1896b459be34eab8a03f246eaf26624ca4e241daabf","isrc":"US22H2309221","name":"Pretty Like You","registered_at":"2026-06-07T03:29:00Z","spotify_id":"1dWt1CY59YpjSBftVvNzIG","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac55dc75a8236561b47b1896b459be34eab8a03f246eaf26624ca4e241daabf. 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/1dWt1CY59YpjSBftVvNzIG.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/1dWt1CY59YpjSBftVvNzIG.
{"copyright_id":"0xaf9150b24cd029aea35a5d630b571e7454ded159595ea72a372eea03e38429d4","isrc":"QZS7J2355817","name":"What If Kindness Was The Currency","registered_at":"2026-06-10T18:12:24Z","spotify_id":"6Yn3ttYazuc19GZqrKbQF8","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9150b24cd029aea35a5d630b571e7454ded159595ea72a372eea03e38429d4. 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/6Yn3ttYazuc19GZqrKbQF8.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/6Yn3ttYazuc19GZqrKbQF8.
{"copyright_id":"0xd0bfed4d3004615a09e38ef4c14b85be46c4d1d9e7b8dbd1a8fc4f06bd7dd9cd","isrc":"US22H2302011","name":"Worse Than Gone","registered_at":"2026-06-24T21:22:49Z","spotify_id":"7a0PMim6XfCz44p9CXGMef","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0bfed4d3004615a09e38ef4c14b85be46c4d1d9e7b8dbd1a8fc4f06bd7dd9cd. 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/7a0PMim6XfCz44p9CXGMef.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/7a0PMim6XfCz44p9CXGMef.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b36700e7d82065c342289955b7fb6a326dd5b6f42037626d0db930c526d2b5. 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/61xEk8m8T6ezLbZs6yuxfc.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/61xEk8m8T6ezLbZs6yuxfc.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x886cf6a17181125671d19aeae60426dd0d55311b3bfe741c6ae3bc203c0e2f1d. 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/5V1fmvKrQ5S61K9dgPb7f9.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/5V1fmvKrQ5S61K9dgPb7f9.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4089f4df729e0d5262d2f703291bda9e61c64c51f0eb573af7904c2f2e21758. 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/76xZQYyjhQMCusymUwrUVG.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/76xZQYyjhQMCusymUwrUVG.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b239721d696d0c2c37c55eefa149914d12d324dc0c708518ba72a3c1e3bd7a1. 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/0HfVbGvDkcnXlXHqQULELs.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/0HfVbGvDkcnXlXHqQULELs.
{"copyright_id":"0xd93995eb9a9f9913a6234a4f08f1e548ac2c04ec33b298c789e0ad1c78c3d6dc","isrc":"US22H2106181","name":"Somebody With A Broken Heart","registered_at":"2026-06-22T08:36:23Z","spotify_id":"2Zzj5tvWsfMzOEeoM8WHKD","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd93995eb9a9f9913a6234a4f08f1e548ac2c04ec33b298c789e0ad1c78c3d6dc. 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/2Zzj5tvWsfMzOEeoM8WHKD.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/2Zzj5tvWsfMzOEeoM8WHKD.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5041e2213ad0d9bcd7e7011a9c2d11b0524477995bb85f62e07eb52b241cad53. 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/7ucWbXlleF7e5Br3eZQGFu.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/7ucWbXlleF7e5Br3eZQGFu.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x221a01213f49305e728e9edb38d8aac160e17b097b6d215491d13896e5c60fd9. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0rWn2gYNAIrSu3gnsP1t6V.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/0rWn2gYNAIrSu3gnsP1t6V.
{"copyright_id":"0xa548b6f6e778e18dbf37fbfe4688cb6a94990fa915f4207afaeba45499bf2493","isrc":"US22H2010121","name":"Real Dang Good","registered_at":"2026-06-21T09:51:16Z","spotify_id":"57XFWNrPbYEJxXjj20fMFn","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa548b6f6e778e18dbf37fbfe4688cb6a94990fa915f4207afaeba45499bf2493. 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/57XFWNrPbYEJxXjj20fMFn.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/57XFWNrPbYEJxXjj20fMFn.