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 0xf7f3d01e4ee9cae9c6f6ca6d9956d0a7c3b04181029000705d1b6915755137f2. 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/93208d4d-6219-45cb-9c49-2a0322c28676.json and https://artists.proofprofile.net/proofs/artist/93208d4d-6219-45cb-9c49-2a0322c28676.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 0xb987320cb4499b30180930bbe84531a05d07f0a3e30e82a1dedd79ccdf89c0d4. 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/4OPHXmAsFf5BcMhUSITwm1.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/4OPHXmAsFf5BcMhUSITwm1.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8886b236d9a5bb788567e060638e91e56a8a255a9f1debd139303ae7be7c121. 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/3gGyzpBLb7pqOw5oC47QaV.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/3gGyzpBLb7pqOw5oC47QaV.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5adc6f0471602cf30df550ab434471956aee2e6924f1008735e717a15cfd440e. 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/0vZi38VepxZWh0ACqYaXio.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/0vZi38VepxZWh0ACqYaXio.
{"copyright_id":"0xf7628680fefc0b8f706ff0234669fba892f3f7a9249526a6273ef18f857fa460","isrc":"KRA492001476","name":"Tomorrow (Feat. GIRIBOY, BIG Naughty)","registered_at":"2026-06-04T13:28:10Z","spotify_id":"7K31QxS2DmTBxdYldd8yqf","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7628680fefc0b8f706ff0234669fba892f3f7a9249526a6273ef18f857fa460. 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/7K31QxS2DmTBxdYldd8yqf.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/7K31QxS2DmTBxdYldd8yqf.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a73c105f566dfe567f111f5af67dc3579d474450318f3137872290f461f287d. 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/7kvmOl9he8v0649CG1KjLL.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/7kvmOl9he8v0649CG1KjLL.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x645afe5cc88db8605f03c53c939750aacce769d86ce465aa5b8ddadda3afd1a1. 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/7abn4PohR1BrcqjYgPQxkg.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/7abn4PohR1BrcqjYgPQxkg.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bd8e7c5ae71018696346d0257709193b3b8e7e93ee0f94cad381b8066ab42de. 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/5TY1J70fsAgyx2Pzq2oBN8.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/5TY1J70fsAgyx2Pzq2oBN8.
{"copyright_id":"0x171f393a7a9bee1b414d7efd56b6e65132a1ce8eca3be0564fd77d1cbb0c088c","isrc":"KRMIM2427554","name":"My Bad (Feat. ASH ISLAND, BIG Naughty)","registered_at":"2026-06-06T16:33:46Z","spotify_id":"0jnIjWe4JU19NT0tF4lTtx","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x171f393a7a9bee1b414d7efd56b6e65132a1ce8eca3be0564fd77d1cbb0c088c. 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/0jnIjWe4JU19NT0tF4lTtx.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/0jnIjWe4JU19NT0tF4lTtx.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b2acd1fe96029f6f7c16aa24578224630047f7da76629c137d9889159698ef. 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/4CupDFJEvndcPQqR0kz48g.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/4CupDFJEvndcPQqR0kz48g.
{"copyright_id":"0x4a0a74ada913e0f3847fee73606847ae9e0dd61b7e205cea87aab1a3bc31a8fd","isrc":"KRMIM2244833","name":"ttm(thinktoomuch) (Feat. BIG Naughty)","registered_at":"2026-06-08T10:36:05Z","spotify_id":"2gOh7iaPUJhuhrMhmHul77","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a0a74ada913e0f3847fee73606847ae9e0dd61b7e205cea87aab1a3bc31a8fd. 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/2gOh7iaPUJhuhrMhmHul77.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/2gOh7iaPUJhuhrMhmHul77.
Kwaejina Ching Ching Nane (Daegu) (Prod. GroovyRoom)
{"copyright_id":"0x024a429ea9c06d7df99adddb7597edad82900e9eb762c1da340efad68215a08a","isrc":"KRF152100033","name":"Kwaejina Ching Ching Nane (Daegu) (Prod. GroovyRoom)","registered_at":"2026-06-20T22:30:45Z","spotify_id":"7ytvrpd0W2UwsJzrlHFGUV","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x024a429ea9c06d7df99adddb7597edad82900e9eb762c1da340efad68215a08a. 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/7ytvrpd0W2UwsJzrlHFGUV.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/7ytvrpd0W2UwsJzrlHFGUV.
{"copyright_id":"0x4a0a74ada913e0f3847fee73606847ae9e0dd61b7e205cea87aab1a3bc31a8fd","isrc":"KRMIM2244833","name":"ttm(thinktoomuch) (Feat. BIG Naughty)","registered_at":"2026-06-08T10:36:05Z","spotify_id":"55mfTGAo2FmQVRxIvOWz3v","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a0a74ada913e0f3847fee73606847ae9e0dd61b7e205cea87aab1a3bc31a8fd. 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/55mfTGAo2FmQVRxIvOWz3v.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/55mfTGAo2FmQVRxIvOWz3v.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1948c75afa7b795f26ccaec830d2ff162a3305222d877c82952ac181520ed566. 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/2hIHcImzcUtUjc947xqCZK.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/2hIHcImzcUtUjc947xqCZK.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f5037ab9d489fcab78511720f6610cad35bf4d985bae275a6d30b5d134f2d8c. 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/7AhZolEFHSk2ghYzxkziJ6.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/7AhZolEFHSk2ghYzxkziJ6.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa4a0478387bc63f2517ca120891fea2bf114ff50ca1a78c853928b6d41c393. 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/2Wqnhu5dRQDAQi8Ej6HnVQ.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/2Wqnhu5dRQDAQi8Ej6HnVQ.
{"copyright_id":"0x99add146c898debdf166c76d357d496b6dc42f2b3cfed3401df1e8298d23e63f","isrc":"KRF152000075","name":"End Of The Night","registered_at":"2026-06-08T10:45:22Z","spotify_id":"74ir9fVKnvpeW1tLeQK4uF","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99add146c898debdf166c76d357d496b6dc42f2b3cfed3401df1e8298d23e63f. 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/74ir9fVKnvpeW1tLeQK4uF.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/74ir9fVKnvpeW1tLeQK4uF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d80d8b5b2473778cbc754016710198fdd505624ae5d9a1ae7409315fbf1956c. 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/2vKK6WRXhPYu0F7wyghNLj.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/2vKK6WRXhPYu0F7wyghNLj.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa16de658cd255c131e349d7081fcc216c2727c0ef5a936e2c4825929a7338c. 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/5AHXMr5z1TfXXi91ZpsYhG.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/5AHXMr5z1TfXXi91ZpsYhG.
My Lips Like Warm Coffee (The Last 10 Years X JOY, BIG Naughty)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c745396c4e05abb33d1d8d39224053386c19d23e564cabfb5a7bd3016d49c02. 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/1ysKEAoMk6zMn4fGSsk2x3.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/1ysKEAoMk6zMn4fGSsk2x3.