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 0x0fb3fc8318f34808744709511359c59ed8f690ce0cd89391ecc20a15cc31a2e1. 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/40051467-e27d-4c9c-9af5-4b1890668135.json and https://artists.proofprofile.net/proofs/artist/40051467-e27d-4c9c-9af5-4b1890668135.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 0xcba4792b1063cb0bd957925b98f2fe66aa24245a1a8e322df43c714b5ec90880. 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/4Sh9Go1rpP3vxZT2AOM7CS.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/4Sh9Go1rpP3vxZT2AOM7CS.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb9b04488889681a9c267aa01752dcaa2a7c5f4bae40f8293638ca5fb772c67. 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/5WsIYJ7K9LFGEA2FVQLDcw.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/5WsIYJ7K9LFGEA2FVQLDcw.
{"copyright_id":"0xb5cfa0d32b5cc3b3ba3b4765f0d6e7ba30cac1b1fbc268b08b4a637fc0904eb7","isrc":"US5TA1200213","name":"Before the Song Ends","registered_at":"2026-06-11T00:59:11Z","spotify_id":"04nwFTYFbM0mj22KO62e84","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5cfa0d32b5cc3b3ba3b4765f0d6e7ba30cac1b1fbc268b08b4a637fc0904eb7. 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/04nwFTYFbM0mj22KO62e84.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/04nwFTYFbM0mj22KO62e84.
{"copyright_id":"0x381837298ccf278f17eb1f25b694740e1162f5cfc6fec1dce5669de847a0d97e","isrc":"US5TA1200214","name":"Bounce (Instrumental)","registered_at":"2026-06-28T01:46:48Z","spotify_id":"3WjbX8s8tdtYwMcDfmM6hP","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x381837298ccf278f17eb1f25b694740e1162f5cfc6fec1dce5669de847a0d97e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3WjbX8s8tdtYwMcDfmM6hP.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/3WjbX8s8tdtYwMcDfmM6hP.
이 노래가 끝나기 전에 (feat. 수지) Before the Song Ends (feat. Suzy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba4792b1063cb0bd957925b98f2fe66aa24245a1a8e322df43c714b5ec90880. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/20V9c6ZHcIAmBuUnan9VFm.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/20V9c6ZHcIAmBuUnan9VFm.
{"copyright_id":"0xca6375900b3cf8a305fb7677fd1aa461acccf96e90dc1087cf442c067cc16b4f","isrc":"US5TA1700064","name":"Coming Home","registered_at":"2026-06-05T10:48:36Z","spotify_id":"0kpOuaHMFSf6aSu0EjDbug","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca6375900b3cf8a305fb7677fd1aa461acccf96e90dc1087cf442c067cc16b4f. 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/0kpOuaHMFSf6aSu0EjDbug.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/0kpOuaHMFSf6aSu0EjDbug.
{"copyright_id":"0xfc0d5604caad571c0ba80a8460e1b1d6e2e3d9af04db0d4dfb73d65d21e996e1","isrc":"US5TA1700065","name":"Tomorrow, Today","registered_at":"2026-06-04T08:48:07Z","spotify_id":"6GKHrYccvceiS3AFZtfFxm","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc0d5604caad571c0ba80a8460e1b1d6e2e3d9af04db0d4dfb73d65d21e996e1. 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/6GKHrYccvceiS3AFZtfFxm.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/6GKHrYccvceiS3AFZtfFxm.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcf319d19e664a78dbe9d99450ce062e67c384bac733863122a98a53f66fb273. 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/2Ox0L12BWrA8yHwf3Lwj13.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/2Ox0L12BWrA8yHwf3Lwj13.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb39edce0659e4b0a7bff2b9c268d71f7f7535db9b53400bbb5dd11a323a2c4b. 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/1c8Trw34ktAQfpa8319zaM.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/1c8Trw34ktAQfpa8319zaM.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbd92012556777a2a1f7f3f5b8a663637d88661337c7d050995c02e14f304f9c. 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/3CSgBSaRi3uDbCUqDsA0jR.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/3CSgBSaRi3uDbCUqDsA0jR.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eaed33180cbf3fc74ad4d680222382ff24cef34087beb8a6412bb7467cd673b. 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/48oxZCoyS3418tCWGYLWgV.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/48oxZCoyS3418tCWGYLWgV.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503ac179f736359cf6c852534e1d5db7e05ab68b9e24c24011e00fbcc4b7d603. 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/6N5gGSzlt24km2UMTSfC1o.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/6N5gGSzlt24km2UMTSfC1o.
{"copyright_id":"0xd8295a0a8dcd9062e453dc9c38465f1de28f7e4fdca527e72bfaa1c98ddc9b1f","isrc":"US5TA1700071","name":"Fade Away","registered_at":"2026-06-06T07:39:49Z","spotify_id":"5inaNxFIvDXAAdwTwjo776","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8295a0a8dcd9062e453dc9c38465f1de28f7e4fdca527e72bfaa1c98ddc9b1f. 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/5inaNxFIvDXAAdwTwjo776.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/5inaNxFIvDXAAdwTwjo776.