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 0x42a11e8125a62020dac3c302a8f546de9a17a1b113bc0c712e20ca075753fbcb. 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/c6dfb7b1-407c-41b3-a58e-36adb9173217.json and https://artists.proofprofile.net/proofs/artist/c6dfb7b1-407c-41b3-a58e-36adb9173217.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 0xaa13273a446386d4b308ded9e147400d7cadb1a1ea71401596c1823f7d865678. 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/2iIBpwP4FyQ95xgVail3yr.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/2iIBpwP4FyQ95xgVail3yr.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e14051724bd6350c862f20d48f0251870ffbd0990e39b1401df36295601ac4d. 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/6eJUG282cUKuIoa72sEsqO.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/6eJUG282cUKuIoa72sEsqO.
{"copyright_id":"0xaddbc52f59672adfaa7b4b3669af22efe1c08b8e988ef5fb2400ecad2860aabe","isrc":"BX3022300043","name":"Dia de Fluxo","registered_at":"2026-06-01T09:12:33Z","spotify_id":"6GmyQws2xpUFIN5dXBNTrl","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaddbc52f59672adfaa7b4b3669af22efe1c08b8e988ef5fb2400ecad2860aabe. 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/6GmyQws2xpUFIN5dXBNTrl.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/6GmyQws2xpUFIN5dXBNTrl.
Lud Session #3: Tudo porque você mentiu / penhasco / De rolê / CAFÉ DA MANHÃ ;P / Doutora 3
{"copyright_id":"0x029052971e8e164b561aa86c109e9369bf3caa7e2c548fbd420d2f1a74fa9791","isrc":"BRWMB2200654","name":"Lud Session #3: Tudo porque você mentiu / penhasco / De rolê / CAFÉ DA MANHÃ ;P / Doutora 3","registered_at":"2026-06-04T09:49:03Z","spotify_id":"3JFB72hbbt3zy30puJTc3q","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029052971e8e164b561aa86c109e9369bf3caa7e2c548fbd420d2f1a74fa9791. 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/3JFB72hbbt3zy30puJTc3q.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/3JFB72hbbt3zy30puJTc3q.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e14051724bd6350c862f20d48f0251870ffbd0990e39b1401df36295601ac4d. 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/1T9dxi40GuNW3gNRHwk8P4.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/1T9dxi40GuNW3gNRHwk8P4.
{"copyright_id":"0xaddbc52f59672adfaa7b4b3669af22efe1c08b8e988ef5fb2400ecad2860aabe","isrc":"BX3022300043","name":"Dia de Fluxo","registered_at":"2026-06-01T09:12:31Z","spotify_id":"5ZEOIsb8XW5Zb37f4Czgbm","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaddbc52f59672adfaa7b4b3669af22efe1c08b8e988ef5fb2400ecad2860aabe. 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/5ZEOIsb8XW5Zb37f4Czgbm.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/5ZEOIsb8XW5Zb37f4Czgbm.
{"copyright_id":"0xa6ef464bc14dab7b6417647070a98d52e17c8e5c7f302643c3abee2ac52ff01d","isrc":"QMUY42100001","name":"Pra te Machucar","registered_at":"2026-06-10T02:20:09Z","spotify_id":"2ECDzK9e9pBv4iyIx4XBeq","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ef464bc14dab7b6417647070a98d52e17c8e5c7f302643c3abee2ac52ff01d. 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/2ECDzK9e9pBv4iyIx4XBeq.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/2ECDzK9e9pBv4iyIx4XBeq.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e0bb262524e1ac1fc980013373442affe9ba5f613ed1166ca631731cb3f9ed. 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/4krZKInC5Yo2g3WBEHJgtp.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/4krZKInC5Yo2g3WBEHJgtp.
Vai Embora (feat. LUDMILLA) - Teto Preto Remix
{"copyright_id":"0x35cb133762c9907d80674fc398e39bb6b5bb5e5fdcbd44a23cfcf4012e87aaea","isrc":"BR6RI1900014","name":"Vai Embora (feat. LUDMILLA) - Teto Preto Remix","registered_at":"2026-06-27T02:37:38Z","spotify_id":"7lUpPjsg1bzS7XCJs4m1yZ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35cb133762c9907d80674fc398e39bb6b5bb5e5fdcbd44a23cfcf4012e87aaea. 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/7lUpPjsg1bzS7XCJs4m1yZ.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/7lUpPjsg1bzS7XCJs4m1yZ.
The Color Purple (Music From And Inspired By)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4922d1756a4f45419e0c1722409c6df1df603795ad9af983fb812a9c1d2f462f. 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/6ibfHaT0k7cpJffoRxUj8P.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/6ibfHaT0k7cpJffoRxUj8P.
Socadona (Funk Remix) [feat. Mariah Angeliq & Mr. Vegas]