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 0x6e9db8f243aa0e7f75c0cb391905ca7325f1d16f58ce49e33cac1b79e9dc33f5. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/74d53fa9-4274-47ba-a8d1-2eccd2b045ef.json and https://artists.proofprofile.net/proofs/artist/74d53fa9-4274-47ba-a8d1-2eccd2b045ef.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 0x3fa1cbe323bab67be963eadf02ad3598fb3b5a4118349d06365c6afafa281fee. 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/USCGJ1497104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc91892a49e92aacb12aa6c6686eda8a51ad923ea0cff92cad07d75f5f166ab85. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/USHM91919305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb73b6d7cf49a9008fa1d069ac6315349a134b2b564701724d697e746abb293. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USX9P2026448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36262d00d4eee220d97ec7496e7b98bcc298dc1b1438f321de0a398c1547830f. 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/USHM21497613.
Necesito de Ti (Remix) [feat. Cheka & Tony Lenta]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad526e0a834b782c67deac40ce73d57b69bf1a31ea166bffaee6c156ab7ea810. 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/USHM21497615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f519553d4d7a4fba376b713e104cb3c4121a883ff3bc048f1719f0ace24ace. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/USHM21497616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe73fce34c464d3210a89aaa59409cba1308de130df4617b99428228c296b9c41. 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/USHM21497619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4e641efe2d3c3f36b7e44b4e345e5780bc852eef90fbafb660eacb97cc5e65e. 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/USHM21497623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c8eb02a16f6468380a32cb6e886474dfdadac1aa753d7f5ae505dd3df71c8a. 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/USHM21497625.
Que Es Mi Comision (feat. Gabo, Wibal, MB & Genio)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd06e2faeed27002b71ea29fb72e92487b81e7840af5b1a4ffab025b26f2975e3. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/USHM21497627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08691a640cb8333bd88d65410ea9590fe9458181cfd0500d742c64fbbd6eb9f3. 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/USHM21497629.
Nos Escapamos (feat. Genio & Baby Johnny)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x053604dbbf19f55da3d95bede9bde751d40094e4d815ed8efaea580ef6a73d24. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/USHM21497630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a49318d7bacbf7f74e4459955fa3eb8cef807a2ef8010ee55959df6f44c16a. 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/USHM21497632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7fe21ba9af14af75228be89b4b4c1adbc32b7b15c5556ad08008d274cfe5b93. 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/USHM82435650.