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 0xa3aba79e3841dccafe9cb551e1ee1692dac9a6df1f6133ba131692f5c65d58aa. 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/c618a6d1-1ace-42c6-a7fe-51927eba1210.json and https://artists.proofprofile.net/proofs/artist/c618a6d1-1ace-42c6-a7fe-51927eba1210.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 0xda3783b3a5d61bd4e4d756c829f0558d040c854a7813567a932b1864bcbf9132. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BCPRM2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335053e1d8d16449b8a9d72114d68c49bb484aa4ba639416273440b9e9630081. 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/BRXRM2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc45ac0d53ccfb8e1e1ae470c7ffea6cb823811bd389c16f8cca5354c0da17a57. 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/BCPRM2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x110e3d2e6c196545b014bb66ebd8a4a404bdd6c02afb7a847662dc1d4a98021f. 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/BCPRM2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x171056444b1cd617ee03ae8eb2b2ae7011b6f2953869eea4aa96f9c1aca5a454. 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/BCPRM2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd030a8effceac24bc0318b61a266c69a10465212f90623d7f4d6788ec50fb2c. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:52:51Z), 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/BCPRM2300004.
Bloco do Caos no Estúdio Showlivre (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72e59582889e61dba24b000440fc5650eac4f56130f67d0dcff72e329ef6a79. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BKPYD2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d9fbc481874836ad0e29f8a38c914b9c0d50b6f6f82755e4649c35773ef39f. 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/BXRXE2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e5e4948e99d5937c1cd586434512f871e7290fd6faaff87d92667db7fcb9dae. 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/BXRXE2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d15d0d290245d7b59164f1cc7853d80b355592bb25630f2698b1f0eabb22926. 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/BXRXE2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b108d5e1e5562326f6c9044b7f20bdbd5ea969f53b6ba5145d44ffcb5586de3. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BXRXE2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5284875870f7ccf5e4bacc08c455dec1302d53bd2c2467d97aeb0e12939c16c3. 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/BXRXE2100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88bf2dae75153b89724e85a7fbd5cd2eddc747460f77d9f4329b21d419ce56f1. 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/BXRXE2000009.
Na Trilha do Bloco #01: Boiçucanga (Acústico)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a8ded6eb6724f24d74a0d8f60f4eea45e653d84171aad3a7873cd8c557d901e. 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/BRXRM1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca863b949d488debb955004eadd094e792fe55d1dc1b5c0163fbf8417c6398af. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BCL672200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38b6b3778103b2ac2ead6d6ed7b4af787a39e039afe4a04185b4f25a51b061a1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USL4Q1857774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda3783b3a5d61bd4e4d756c829f0558d040c854a7813567a932b1864bcbf9132. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BCPRM2000001.