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 0x367379d3c2aaf7c6d848a5e6821240d2ad3d54fec4fd48fb62e140284d12dd59. 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/9e2ddaea-b787-4a77-8519-512230874e90.json and https://artists.proofprofile.net/proofs/artist/9e2ddaea-b787-4a77-8519-512230874e90.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 0x5ec923da2f00ac8b4f0babb67dbbb08273c9495858e77a5f4f574673b8cab799. 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/09VWNfBGL0HpjNnQAQI03w.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/09VWNfBGL0HpjNnQAQI03w.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe12979dfd32f752db866c182ce36d87059fef9d5b5b90fb70f340d0a95ce0656. 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/1A4Wc7xOuJotGAS1R5yzgs.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/1A4Wc7xOuJotGAS1R5yzgs.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe12979dfd32f752db866c182ce36d87059fef9d5b5b90fb70f340d0a95ce0656. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1B5dVt9hkYUkcVwWuoftbh.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/1B5dVt9hkYUkcVwWuoftbh.
Manso Manso - Hidden Track - Mana Fe After 1 Min. of Silence
Brincar de Casamento (feat. Toty Sa'Med)
{"copyright_id":"0x2b18997e061bb9731df48003a9eb67b158fc42bf1ddee6c7adeaafd6dae8df19","isrc":"PT1AS1200004","name":"Nha Morninha","registered_at":"2026-06-09T18:27:57Z","spotify_id":"5IwSCetnMvpNkY87THOfDE","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b18997e061bb9731df48003a9eb67b158fc42bf1ddee6c7adeaafd6dae8df19. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5IwSCetnMvpNkY87THOfDE.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/5IwSCetnMvpNkY87THOfDE.
The Spirit Indestructible (Deluxe Version)
Vier Frauen (Quatro Mudjer / Vakadzi Vana / Quatre Femmes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9508bad0be6b09d45136a79a904115988367749a93b755a4641af608a954a8d. 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/1uNXbwQBGnSOde9Q3IlBhI.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/1uNXbwQBGnSOde9Q3IlBhI.
{"copyright_id":"0x2b18997e061bb9731df48003a9eb67b158fc42bf1ddee6c7adeaafd6dae8df19","isrc":"PT1AS1200004","name":"Nha Morninha","registered_at":"2026-06-09T18:27:57Z","spotify_id":"46qtUUsxpiW83E89VjcPrP","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b18997e061bb9731df48003a9eb67b158fc42bf1ddee6c7adeaafd6dae8df19. 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/46qtUUsxpiW83E89VjcPrP.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/46qtUUsxpiW83E89VjcPrP.
{"copyright_id":"0xabda1c6d0b4712a0afcdbfb557d0e1395b505bd54fa38313bf268db53ef90833","isrc":"PT6DV2000019","name":"Minina Di Céu","registered_at":"2026-06-08T14:25:40Z","spotify_id":"4Yk6BNMvMsNyPfZTMKQX2r","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabda1c6d0b4712a0afcdbfb557d0e1395b505bd54fa38313bf268db53ef90833. 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/4Yk6BNMvMsNyPfZTMKQX2r.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/4Yk6BNMvMsNyPfZTMKQX2r.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c395141cd93869280519196e17fcb78c8743c1d5a5423f1463b3814c09d999d. 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/1LOSPbPTC1BhXAxDCpGRWF.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/1LOSPbPTC1BhXAxDCpGRWF.
{"copyright_id":"0xd876a43c9bda373e00c5ccb06e82c5b1f34064306b6308228d054030d0a408b3","isrc":"PTCN10100004","name":"Que Nome Lhe Vamos Dar","registered_at":"2026-06-07T21:54:37Z","spotify_id":"7sbePQvyeSRMenG9ruGjFe","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd876a43c9bda373e00c5ccb06e82c5b1f34064306b6308228d054030d0a408b3. 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/7sbePQvyeSRMenG9ruGjFe.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/7sbePQvyeSRMenG9ruGjFe.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97228f6175f74484eca0a0916838361535f45f542b62dea1980705b58548b44e. 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/4QSQIVUP2k8rCU2PJjnMb3.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/4QSQIVUP2k8rCU2PJjnMb3.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f256708299e7c1c3ab9ff8497945f325221cd3f948f1fdce59ad2234ad527c. 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/2I3t7sX7JYwLWkFMH5cw3p.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/2I3t7sX7JYwLWkFMH5cw3p.