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 0x0bd95b9ca47fa3609397e1e801ff8561bfd5ff6a07f45282719e1b32590d37e0. 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/dbeb69ab-84b2-4d1c-9526-2d248987ca88.json and https://artists.proofprofile.net/proofs/artist/dbeb69ab-84b2-4d1c-9526-2d248987ca88.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
After Midnight (Remixes) (feat. Emily Zeck)
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 0x59df69978768bf8bfc6df8b5973eef67c07b49a1ed5d765212be7e3326b77149. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/FR9W11809347.
Siento (feat. Cassa Jackson) [Acoustic Version]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0852e440deb56c645eddf0af6ba7d9329547bdbb21e68be240ef91e99a54ba2. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZNWZ2176218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13cde1da14f489ab468a8657362e0f3c12c6ae902eeb4330f098e06bcbd6db75. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QZHN82291795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6b604e8b360664afcf62c75ffaa418b3f8124d6474a4d0a42cc1d5d73512272. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/FR9W12456245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb031c0954292716b84d90513df865106f4c8a17abc83596260a24e40a42f5022. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/DEL712510017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x626485629657d345046a0ed2f8f83710f4b6d733c4f443ba5663a4e3ff358cf2. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FR9W12507784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c68df19d42b070dd911268c67a26caa4f986fcaab8f60784c52251ce5518a5f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FXR832500061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7153ed29ffef815f99e2491a24fa62b433f0462c36e0caf350d00f7f413f70. 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/USAT21503910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaaba24cf67ff02d927d9b523480950e1de4a985b263c8319002e352cf84b241. Chain 2 (Bitcoin): anchored in block 960167 (2026-07-29T23:42:34Z), 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/NLF711802594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf58d4b57fcb16b9ae2f32dca2f0a4b0802be7c014fc04e5c391c113d919d0ad0. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/NLF711802593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3cf076a1d9a680ed89b07f2a62789b8236d1651e9bf8d27b48f660d2669d450. 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/DEL711810087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9266a8b941474806fa29b1fd2fd2be92615a89a87fb149702bc1feee39cb82c2. 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/FR9W11808032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7153ed29ffef815f99e2491a24fa62b433f0462c36e0caf350d00f7f413f70. 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/USAT21503910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7153ed29ffef815f99e2491a24fa62b433f0462c36e0caf350d00f7f413f70. 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/USAT21503910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea6aacf1a4d12e1b67e8db719a21654d81ae5622d20d1b07cb846d9047f0ea5d. 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/USUG11601227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb031c0954292716b84d90513df865106f4c8a17abc83596260a24e40a42f5022. 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/DEL712510017.