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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dddb757d9f8ff55d52ce0c077f23d08d1e5394564c4f504b79eb0890084dac0. 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/897c296e-445c-4ab0-aa89-74bb3677d573.json and https://artists.proofprofile.net/proofs/artist/897c296e-445c-4ab0-aa89-74bb3677d573.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdcd3539f4e1949cbbc2d2f14a18e64c3acff37a326f8b5f28251c894762ea7b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BKHYR2400330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa13ac9567fcd7f1cfbf8d142c10a9e7a463e23bd30aff8adc7850bf8fe23a06e. 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/BCJT12500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa492ddd56e4f55dffd222e9d9a8570bf78a418dcc8f7fc42e49e50e20e0247c. 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/BKF442500050.
No Bequinho Estreito (feat. Mc Luan & DJ João Marconex)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe1f616e42efc03028d66f70ee63b4c5a253324f594054544acbfd0b2e500ead. 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/BCJT12500010.
Paraíso de BCT (feat. Mc 7 Belo & DJ Alisson Santos)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x890449df40e2e9358b4308db618ce82e5ecd655b8b4eb3d5718648cb441180e4. 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/BCJT12500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x834279af64ebb3a8aaa1d26d9968288ded1c2c59ac2a59ef0ffd48cba1dec705. 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/BCJT12500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd505331e29e6e2cf0bd14d6af24b999b4cb108e894112790825f88d649f619f. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZGLM2594477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d00819348cbd007f5370f5f5f48cb86dac5415c5321ff9c79648c201eacad37. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/BCJT12500005.
Hoje Eu Vou Te Deixar Zen (feat. Mc Gw & MC Kalzin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc0a8e12af172316dd2615794b8b7d45c0f5741f3ef5e7c0b7d19fa342ad11f7. 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/BCJT12500001.
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 0x5ecdb0d9d4d0dfa315d8be98af9f569c89aa3049cd32bf6a049dce379ee101f3. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/BCJT12500002.
Quero Ver Se Tu Aguenta / Flexiona a Coxa (feat. DJ João Marconex)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a31dc202dca0a3e4250a88488b54bf431e215de34ac2d656d0be19e001ca803. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/BCJT12500004.
Tá Querendo Sacanagem (feat. MC Nego da Marcone, Mc Kitinho & Mc Rd)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96717ea6332fd37c87e26a4652c3620a4f37ecc641ce1679b246ad330ddc9ed8. 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/BCJT12400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1882bd6b54fc8e3a7e88a154dafdba7b3c5dccad253b090b17155f4ec8c7fdb5. 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/BCJT12400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c0ec2ded081b1fb492c3221244c6a01f5a2fef783cf7163c7b79949238a6c2c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BCJT12400019.
VOLTEI PRA SACANAGEM (feat. MC Murilo MT & MC GP)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92c8ecfe0c176000cb44cf1bcc90e7530493d126e9dd31622a17e2353bba30c0. 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/BCJT12400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3918208e1301e70a9d767402b4e39680e0883d744cafe6e434e7872539e746fd. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BCJT12400036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x980960502b5b110dadbeca7b4962607aef9480f5a37c7fe7b83be97ca2adee13. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/BKHYR2400163.