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 0xc5f5161d5bf33219411d70be17395199811df5178a823d3046c9e716d3407b5a. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1864022c-596e-451e-8b1c-daf69ac0979a.json and https://artists.proofprofile.net/proofs/artist/1864022c-596e-451e-8b1c-daf69ac0979a.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 0x4f0675aa1fe55ddacf80633cbd50c1f9d8cc2a8ada0f720c884796ae3ef85ea0. 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/BC3PG2401011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd88a8ee23dd6864f2fe4d0806eea39d515f151a941290d6f1e9e21c036eee49d. 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/US7VG2396019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc845925219f3b41907f5a56a4f2ea20be2d05394378d1e13b3ec5faf1b1b05eb. 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/ESA112433665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8733958f4902ad60a3ac3d1c0db9a3d9a3a0f503fcfa6323698c0eeb09f0b95a. 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/BKF442400168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb1f726e8733b21b7466e6c96ad35c529abd9397af28af7a04f5c93c3d2ace3b. 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/BC3PG2402529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ccca3bf432b2887f06f8e77c5ad458b0ab8b5c928b32d67a27eeb39082232a7. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/BK4442300121.
Eu botando ela gemendo - Camisa da Marconex
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03590a35835719e3711d4ab88f1fcc8cd3620e37b1a96311e8e623eb0b01938a. 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/BXKG22300625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1bcc21d9aa81b2865076b71f2cd6697f4f31c80c14c7ab2d3cedd588aa6ed2a. 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/QZGLM2503445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d0bb3d2e7b68e03a6f752f92e0ea1a14c2a69a71f04dd39d9711033d1de8197. 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/BKF442400308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fe1ed65cd7ac641e7dcc1e28de733c3caaa3ab6fa4dd631d7db28c0cc9a0bd7. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BKF442400177.
Brota no Barraco & Ja Veio Tirando a Calcinha
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce21ae64cb0f601708de4eca1d018370641b0fe601a603254d7efd51f820a3d8. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GXD7G2276824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82db61b3517fd8c5dd69757f7d258489cd8e8e0caa3cba60470168359c9c8152. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/US7VG2597474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab0985d36168604a9e3948fd7fba4739c042e8194c00dc3ac31aba0e8a5abfb4. 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/QZNJX2458984.