1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df7acc07f1e4d770225d88f0bd39671c37e01d41fda0f32141d3049f2ef2e29. 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/ec71d187-28d6-4dcb-b1ad-969a4f674b2a.json and https://artists.proofprofile.net/proofs/artist/ec71d187-28d6-4dcb-b1ad-969a4f674b2a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab1b749e6409fd7a6470894f986632fd316f04b0e866374ea39f36d8b86fff5. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXN9M2442523.
Volta Bebê Volta Neném / Meu Pedaço de Pecado - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78fe3390693b957cbe457d9c6fb63e1ca4b8f5af9885efdd5b336385e0dbd215. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXN9M2442526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ab798df36db7cff5c3bc1e7f486354ec2f81918b8cdfe8076ea4d2d5535ab2. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXN9M2442527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb9ed9382d19efb33263da945ba604c7df5a5684b5d399cb38ed5885f4f2a1fb. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXN9M2442539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb203a1b0c7c57901a00c4ef44f1c9875636a6446b2e5683dd38d5588edf454. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXN9M2442540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86778632beb6da9ff97468f01dafbef7a9ab4918d0dd0c9664d74db58a025b44. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXN9M2442541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf16cd506da42e1690b2906001299bbb38eb97e59346f001aa26e4603e9914c5f. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXN9M2442542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70da46865f34a0a949d11bacbc53ffe8b1ecb91debc44db036c03a58bc111105. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXN9M2442543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62ed5e1c154057284febb8c1d61d270b4cc3795dd2de50b3354cbd57b856690f. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXN9M2442545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x687bba0f9fd8bd1a48d9dcd7c73464f287d155a1cf3efe93f75da5ce7ea6bb93. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX4E52422820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x542aafe6f6b78408fc4d782dbbae5e935928967ddf273201e6e349294a621521. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX4E52446384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e087d54258df85340e2de38bd9fcc0f935e23bfd675b53c47e6b2dfb7ffff90. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX4E52446390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c1dec96c657c7ceafe91a377128cb07bf2f9af91bf454a277438d9b92bbaab. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXN9M2442500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf7dac59cea513bd04309885c43188918103610450fb10635a2254a77492b7a1. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXN9M2442503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbfdff8af3c8591efb6402bbcc075aa29b39bc7d760cfc28775dab4520a0879e. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXN9M2442504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a070badc176062876a6202490f599717a67c491462e41f2305392891533d30. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXN9M2442506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92cccc507d1e46b1a55f103043092b7801352f5b46cfd3a740c1829167f80675. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXN9M2442508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce4064d2f81668a4c1998e055b50405ca571c889d43d79f13555dc1d64a9de9. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX4E52446350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea3af1e28b66150713d516d1159d0bc843918ba2035e0b28b68d214c4c155fc2. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX4E52446351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb971be0072fe41d40048db36ee7974522fa98db7ce2f0705e77f59340f6f77. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX4E52446352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7b794964875a1256fffa2eef466e9062a152fb4785dcd2e8accba89cadbbe7. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX4E52446353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d0cc5447426bb4a507533ab1692abe10d8a8e3bb2005ac21b3f47bd3b3ec0f. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX4E52446354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc50bdad90357e4229ec0e72abd46aff07d40327a5ab404e1ea55ff90d48e354f. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX4E52446355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eca1f8be8c31a3f0b882a0b16e118dee58e56592d1880316a4e4222213fb765. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX4E52446356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3573c0225c1b4c69329c5e869f329ac9b3a7fa24849705b60fbc40e761aafc1. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX4E52446357.
Bicho Carpinteiro / Brasileirinho - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdff5f3ed80df0a29d6d0704003fca344e4165973e564306a3db20588319bea1e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX4E52446358.
Milonga Para As Missões / Delírio - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f58775cb3832fcd8890e9ae86d649c4896c3b3bce4fbf17c505c8a10ed96d6f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX4E52446359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f3e0bc59fb63300141cd8489c10b8f2e347d13e85f515a0b44f33af47ab0c14. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX4E52446360.
O Menino De Vó Vai Deixar Vovó - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81146c908b34fe1199ebb9a17d61deae02395934f76784e3c1f3a520b0299ad. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX4E52446361.