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 0xe1464a8154f1fa77b8501462401867a7b07e6d5e4fc87a022a112621e362b4bd. 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/2b2e9c13-7e58-4bd6-9146-9c5b9fe8a025.json and https://artists.proofprofile.net/proofs/artist/2b2e9c13-7e58-4bd6-9146-9c5b9fe8a025.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 0x5d48aa727012b9e35db0d45a583d7e7b3ef3b45c09c8e17fa7a6d43975172df4. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/SGB502370364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadb7f5f64d279c04b2bb22d6a25d85c87e06933b5967fd1379a0f6ad7e131058. 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/QZMZ92499427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x059160dce00a798fca7b125ac143921d31743b081dc19060e626dc92c91a3c1c. 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/QZEQU2224839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff63b9f10a6b246c5085ec44a0324e0c8e70d20a275b33440f189f0396b2b17e. 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/BCLWS2500621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9321510518fbbcf1f4552478f54f3087f497438d9e8b4c3980e088d6504fe3c0. 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/BKLAK2400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae32ac64fcfaee1d8cc7c02efaebb7601a5161661cbf21c8ac92deffd16f7976. Chain 2 (Bitcoin): anchored in block 960177 (2026-07-30T00:21:01Z), 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/BCLWS2402051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84cf70f981b1148b5e4207f69d622f98a6fc3412aa7f57671d61477aa40915a7. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/BCLWS2302483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf930aeb58803db4d526d32d1b2a8feb2d135a55913dc2afba3cd9801325db87d. 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/ESA112430356.
Quando Você Se Foi Chorei (Automotivo Remix)
Quando Você Se Foi Chorei - Automotivo Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4613dba30bd871e2df49a06cc264a95b2693730d169f089c39a007fec342c9b. 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/GXBAV2317608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82e9041495cd42b37099714004678e97f896d3ae2218ea6ae3d72db260276130. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/GXBAV2317606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6248d06fb1299104ae02738a0b6ca8a01ca434d034aa7c08addfd0085732a96. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/BC5LB2300068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1789b065608db1351e75b661cd01355fc262e978937f330be096c28104366050. 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/BKFUX2300359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cdc0a34919ac5e452c4893595496fade96de856071d6bf1c59b7baa17f5cedf. 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/BCDFI2300070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc87741a91bcef105dfcb6a1e90e107912f5a43b8df4c587bc67dcf377c6c9986. 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/QZS642348585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x077a60a26f8988dcdf3b03884cb7d5f36b0bc40a5ceeee61699083fb334c90b4. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZMHM2338277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x961569f9c4f572fb9acb0f9298c976f3cf1b55cb389f972dd4b73909cd97b844. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QM42K2207379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bd3c01633df293f76388bf565bcfa86f1679da98ea3884dd33390dcee67e591. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QZS672292011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3040f6e15fc2c881d15dd1ce16348a406f369cc7cccd27f3700c3a1f83d1e31e. 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/QZS662216337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68fed4754a642e573ea97dc0bd867a4566c1ec46b31cae02fc2cebe9b19b6ba6. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/QZS652245060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe8ac1330d7a7279410cfda390d234b03ca0abf404356c7695b3813ef1e9f26b. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/BCLWS2200518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5f51c3b112edeafe0cfd86395abeddeed73ab791b86bfdbdef7f0c1d938e8e9. 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/QZMHN2250404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2cd158bb89ff7f3fc61b61841656654c402ecf63c158f53b5d2677f9f515925. 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/QZS642218152.