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 0x6f161d1eaac100b3634814c55bde6a0508551a12926b1a2e65fe1f4c19f6dd05. 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/f4820234-e5f8-4389-ad99-8bfa2fc36067.json and https://artists.proofprofile.net/proofs/artist/f4820234-e5f8-4389-ad99-8bfa2fc36067.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 0x51cc53e32630884ef828bd46bd1774b766c465051aff17fa6491bde643723ea6. 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/7lIkgdTJuekqytTYTOSAWS.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/7lIkgdTJuekqytTYTOSAWS.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3470e9c0a8bf17bb495382aab77777595a7857bf7961ff24352212dfcc63ceec. 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/3tCbqV1d5Ja7nXFSUdWIBE.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/3tCbqV1d5Ja7nXFSUdWIBE.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce5694bf8e67543325c9972807db960fcbbe4b09dbe1dcc10a6f60e72c2a8b39. 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/7yjskSGJWd9Pez4RkJhprj.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/7yjskSGJWd9Pez4RkJhprj.
{"copyright_id":"0xf4d70d16bc8fde28ae20e3aac5abcce945f7dea2a16afda07c5cc71bf2a6c6e8","isrc":"QMB622400313","name":"The Secret of the Old Mill","registered_at":"2026-06-19T14:37:42Z","spotify_id":"1IYDO6fitBEhsMQFoaEIZC","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d70d16bc8fde28ae20e3aac5abcce945f7dea2a16afda07c5cc71bf2a6c6e8. 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/1IYDO6fitBEhsMQFoaEIZC.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/1IYDO6fitBEhsMQFoaEIZC.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x466eb1585545978e6ed8b5d1e0c164454a5fbcc1396147c9cefa4e381ea6f85e. 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/69N1tB1ajMGnxOOiEW9rwr.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/69N1tB1ajMGnxOOiEW9rwr.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa18c57482b5644dd78675159507c52d5db381aec94ef76eb51a06b7ecdb2acdd. 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/1MuRgY2GQvXnqL96NHBJAM.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/1MuRgY2GQvXnqL96NHBJAM.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0831886d960a4b2d196d93727437f3d6682f47cab954b5eedceec712479b470f. 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/5N09Gg7etLFkWQVzeIpqGL.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/5N09Gg7etLFkWQVzeIpqGL.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00c3eabcbd710ad8a95b04a4502ff390757a115cd7a4644feb883a33c3263fad. 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/3LyurpZwPt83LltwCrQoJz.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/3LyurpZwPt83LltwCrQoJz.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3058fabc124afb9074a24f7eb30e47b6e430a732008b705d993f72427224a1a. 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/08vO5Ot9PcRgHf1Uz4jGdU.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/08vO5Ot9PcRgHf1Uz4jGdU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2892fcc8d0798e383107b95fe0e1ef8d0d53992a5647f6a9ec4956a05081411. 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/1HaRzSBu8FidHsWs2sAKz6.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/1HaRzSBu8FidHsWs2sAKz6.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb9120062d800fa06275deca52cb92644cf50a918cbdb4a26ac4f554c242ff1f. 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/5nyd2vJHoaSyu8cdxf3rqH.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/5nyd2vJHoaSyu8cdxf3rqH.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dfa51c99d1fbf08fe20b3f30716ea37fa3abcad083999e1ea02633df0e2fc8e. 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/4j3PO9rT9waW9UF7RCb5cs.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/4j3PO9rT9waW9UF7RCb5cs.
{"copyright_id":"0xc13c55d5a8f27fc417252b3a668f8d24aca69abeaf6afc8d8143e670f66d5ecf","isrc":"QMB622400322","name":"The Melted Coins","registered_at":"2026-06-23T10:47:28Z","spotify_id":"22beTs5wwc9FEhPWTZXL5Y","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc13c55d5a8f27fc417252b3a668f8d24aca69abeaf6afc8d8143e670f66d5ecf. 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/22beTs5wwc9FEhPWTZXL5Y.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/22beTs5wwc9FEhPWTZXL5Y.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe765880d3da7b3369935202275d464e2a2b88857d9cd8b08862ad1f1cfa24b. 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/1SwzNym4UR2dgTESIIBvaj.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/1SwzNym4UR2dgTESIIBvaj.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90838700700a50cd97adb67e3108dc224d309ccd3792ff4718339516da20a366. 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/2OPOUkMW4DxByyqOfvi4rj.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/2OPOUkMW4DxByyqOfvi4rj.
Touchtheplants Presents Sound Wonders: A Series of Epics
{"copyright_id":"0x57c8283ffc477f91cd75a4e9a6977310d56b63014e93dbdfb8e7fc1e991c11c6","isrc":"FRIDO2112688","name":"You've Got That Cowboy Spark","registered_at":"2026-06-21T22:24:32Z","spotify_id":"0JboY9msdQfvTqdfAwrNyM","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c8283ffc477f91cd75a4e9a6977310d56b63014e93dbdfb8e7fc1e991c11c6. 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/0JboY9msdQfvTqdfAwrNyM.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/0JboY9msdQfvTqdfAwrNyM.
Kajillionaire (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb79f1fc4a8012a0f25e6a7d75bb02c3edd3950e087051745f584415780cfb7ad. 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/5Rb7AnbMWOIbvvfyhc7dRL.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/5Rb7AnbMWOIbvvfyhc7dRL.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51cc53e32630884ef828bd46bd1774b766c465051aff17fa6491bde643723ea6. 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/3Kfyp7zbx03o2zfuTOk4cS.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/3Kfyp7zbx03o2zfuTOk4cS.
{"copyright_id":"0x52766ad8221cf42db3ed0d4639c6c738193d8b0e4d7f8ec8343516df6be5fdd9","isrc":"USQ4E2005979","name":"Darker Than This","registered_at":"2026-06-04T09:11:16Z","spotify_id":"40Vj9ZP7n7rwEliCgLPLip","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52766ad8221cf42db3ed0d4639c6c738193d8b0e4d7f8ec8343516df6be5fdd9. 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/40Vj9ZP7n7rwEliCgLPLip.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/40Vj9ZP7n7rwEliCgLPLip.
{"copyright_id":"0x2b1bd3503e06cb20e2e37ba42ac59e75978129a84ce074fe31ec1666b3fbe13b","isrc":"USQ4E2005980","name":"Infinite Love","registered_at":"2026-06-01T17:11:00Z","spotify_id":"6SIUbcqmVn4zTVDLeY5mMC","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b1bd3503e06cb20e2e37ba42ac59e75978129a84ce074fe31ec1666b3fbe13b. 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/6SIUbcqmVn4zTVDLeY5mMC.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/6SIUbcqmVn4zTVDLeY5mMC.