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 0x0c5aec12c648e318e3623dc4648157804b24983820e4ddcfc205207c25b0a126. Chain 2 (Bitcoin): anchored in block 953786 (2026-06-15T12:56:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d87ffd01-9840-4f75-b8c0-619f8a4406a2.json and https://artists.proofprofile.net/proofs/artist/d87ffd01-9840-4f75-b8c0-619f8a4406a2.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 0x2c5d56f5569efa8b7e75e370ab07d48e5a7a7fd302ef256cc65b5183b2f80baa. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/QZYFZ2474492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ed8bbfa1e3aef7451f7128ba0af93e12d9aead8851afdd9fb34b52675e7db9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZYFZ2447005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567e0d4e635ef2c5b9ea8a0aaa576148213e3be94974d2ef3149a467846dc859. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZYFZ2439439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54ce79517bd15972261958cfc9623a5b0d79589feec6100ee51eb73c9db26ba4. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/QZYFZ2415549.
MTG - ESSA SEMANA VOCÊ JÁ GOZOU x DE 10 MULHER 11 É MALUCA
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49be8f202344bb46ef4c1302c4d1990eef1b9542a7086201a49d98c0886f2b7a. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/QZZ662450286.
MTG - SE EU TE PEDIR PRA FICAR X BAILE DO MORRO
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8c8fb278fcb71cfd31c6de1f279921057b5bc51fcc95dafc791294546cb7158. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZZ662444826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59baeb18a0d660d438c194810ebe0fa2d0128f9795a8caa33dbe11eadb43281c. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QZZ662443650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8233b2e94886763af63c8ce4ee15620734aee990f0aefb435c7b9e9e2006af99. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZZ662436710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x769a398778d0a0de53d9f066bb8a28c852605e3ef056a488dbc581563d92901f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZZ662433693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde92b51111563e1154a76566d8fa6812db2b5bb473970c7ca0fc2c2f696c2fce. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZZ662433694.
MTG - INDIRETA RETA x NINGUEM VIVE DE FAMA
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x206fae843dbfc2a133d9487cd3f668afe036781a89be2b00fcee68225a7186fe. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZZ662433691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf44db54bfe598ab51bd1b0347ab38a16536871deb30a0b371ccdbcbeba95cab4. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/QZZ662433692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x400ecfee8319e2196c313e95e58de872763f18abc4f467d21bae2156b2ceca69. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZZ662433697.
MTG - VOU DANÇAR PELADA x FREIO DA BLAZE
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4099a897e30fd6e566fc26b37ad8c1209d96faed9f81036d20f2dfc9b2680fd. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/QZZ662433696.
PONTO FINAL 02 - MAL ELEMENTO x VOCÊ JOGA SUJO
PONTO FINAL 01 - SÓ DE RAIVA x GAROTA CERTA
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea540f19d2745d015b0f833a002074382fe81d10233c9b8b1384e72465bca0b8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZZ662427904.
O QUE QUE TU FEZ FOI MACUMBA OU FEITIÇO x EU VOU CATUCAR
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd27436d275fce945bd6d91f05245578462aad2a3ccc63937243235806ad785e2. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZZ662422977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eec6fe428a7beb221c8a57ebe72b116bd5fbe4b42a21b0bfa84da2e45b09ccb. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZZ662422976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bcdc392501b4192a4e61ad5630a2a24e2ac073961f7fd28f8c776a94808e0d4. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZZ662423733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf534dc71487a21355fba465add2f66b4996be8e8f03023ca26b2484b35d24be1. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QZWDW2475883.