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 0x454625647fa6c5fec4a6cfab41784a1706819646764de50ff0bd7fae4722aad0. 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/f179c075-9ea2-4037-88cd-bb7bcec6cb1c.json and https://artists.proofprofile.net/proofs/artist/f179c075-9ea2-4037-88cd-bb7bcec6cb1c.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 0x3231eefe9b98de4264835145f0c824286ec7464c380bd3ae915ff76e25333e3a. 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/BKOPL2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc11092d5a62af948954d4e13df01b6093e885182f1a50441a030d9f235c428d. 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/BKOPL2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b416dde8d509e41340e3ca7faa41699020763745a981d1846ea55c4a19ccdcc. 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/BKOPL2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a14429ec7aeecc0bd7b211777560658bd2e686ca6069b7f48e59cadd4a49f7. 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/BKOPL2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b1dec6799c1ff0e158c4eb0e2ad0d734f68ae86f8c10a85428b08f91621306a. 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/BKOPL2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaeb1e1514c8557229c40519dedbb40a3ddd0e7019f63dbdc23a13a01667fc3a. 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/BKOPL2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x595005f298b0df119ac7a28808a5863e274c26b7fb7a31714a81e7e4ebdd0c76. 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/BKOPL2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb81815394ffd3c5db7aa46c4f47b961fd77d08e4c6893d58c7bcb4ab32c8331. 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/BKOPL2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x943864d8b049347d4222b94a0047e37f9d90b7fa582b0e0f91030fe11c726980. 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/BKOPL2400010.
Siris Paradinhos Em Um Cantinho Bem de Boa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4db2ac2de20b985367d7fb566be3b57b81439a46875f0a5b2aa79aa9fbcd27f. 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/BKOPL2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb057cd3cdc460fa7a4025f9168aeff234027b0879e1feac029e6ce4e2ca631. 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/BRTRB2072587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa30701c69ab2c35a9d3697037e89e8211a81d8bb1d30919897e3df3688a43323. 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/BRTRB2072588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a6e4be4d468a3abf680816e4d1856d6be1dcdf6776c97bff04711d92fc2f01. 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/BRTRB2072589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd7b95083d01f53af9335dd0694c936ce0f369c48161651930c6c52617a84c0. 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/BRTRB2072590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceae66299dfee88b7e80679e900fe0389f4b15bab0dd51d2681ed7276e63cba5. 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/BRTRB2072591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb16398a71e3c6c7d6414f06256869a770e1ce4033009cf65177432c65da83d6. 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/BRTRB2072592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dd13a0cccb95dbd3918425f8a2689703e3e80f62a9ae5d760dfc2ebfcd4b9c8. 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/BRTRB2072593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53aab68730f54e6353c7ed792e5c5ef1486c15c2feffa9052d4d4d9a8bca5cef. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/BRTRB2072594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a1780a5dd7db41bc081b73b362eabe3693ede8e8deb89935bc3fa09a13a2344. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/QZHNA1957704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5062173434e32441280bfac84e54e6e00db78dd904059994d7125d1a5c72ac81. 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/QZHNA1957705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e8ce0cb60cb2a53afcde14badb4dc2563a0b008c8fb5fffdc95caa227388e97. 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/QZHNA1957706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafb0f3c1189640a6a7250605ae866ed856f549126dc793158183a3b8686d747d. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZHNA1957707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda036d3d9df30c52ad457c5ddec4a42be976d18e07296bb82b3bd1859e4b859a. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/QZHNA1957708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb37990a9181514dca3d87d949a7858435c6aa6108f29281ef040d81c5d770f9e. 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/QZHNA1957709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf965508349d2d5bb1c9d58df4e32ab20fbae13eade9facadb30ddd8a2086f47f. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZHNA1957710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd81637945773b4f31c295b06bed225d9b6f38de2365f8b09d285c71f5a23d345. Chain 2 (Bitcoin): anchored in block 960387 (2026-07-31T10:06:30Z), 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/QZHNA1957711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfff3cb92f8d87eda17a1c700d238ebfadeff938c104ade93ba1f9c84bf976d7. 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/QZNJY2481774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14fe8a16e956cd2f803fb0829a733bc5cbba23d17fc630acada45161528de30e. 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/BRTRB2305279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x416c608fcfaa548fce7f6fcd4ad56c121b485766c6a52b2e4a44cb7b63f372c4. 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/BRTRB2086251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e5b684c0eedab26c28856338a77d92a8ef65028dc707e068198773cd94dcbb4. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BRTRB2072584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb391c8302c1a026f27f06e6acf4e43e63970b8b10e6b037bdaa4a6db45a0082b. 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/BRTRB2071704.