"2 Times" is the debut single of English singer Ann Lee. It was released in Italy in December 1998 by X-Energy as the lead single from her debut album, Dreams (1999), and was issued worldwide the foll
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 0x0fbef26e1e12645b6001cda926b7347dab16ff45ae76b1689b43442620f34868. Chain 2 (Bitcoin): anchored in block 953706 (2026-06-14T23:14:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7c00c028-a7e7-45c2-aa62-c786e3d0f2ae.json and https://artists.proofprofile.net/proofs/artist/7c00c028-a7e7-45c2-aa62-c786e3d0f2ae.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 0x5828e7e9ee4c27bd66b0040a2879a9bc71926f1ba4ae8f95e5e3d1515a6183b7. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/USCGJ2040364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a56d09b03cfa4d8adaa4a935ce70f4bdf3b2248abe6ee55eb0961cd91254e9. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USL4R2047121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468bd34f564884956f67374b3bd1378cb058f292397f0130de3f357da6dc07d4. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/USCGJ2180739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4e20caf0d13639313ccf36bff3541f3055704835370cbb85213c9a46d7c5a37. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/USDY42122897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22418c75cc300f152701f379382fefbdea2f9d33b5b9a24b842fb3fc92e719d7. 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/USDY42122900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe968f97ab1193e5c64b330a7bc0c71d3dfa9c2797e00db9defd79a3170cc121a. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/USHM92101112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85671f3607631c990111c9391ab41f6c9897bac3666d7f495c283b517525dccb. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/USCGH2297933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ec206f721ab9f41c3e523c9657484f10bdb275eaa796235409266e691be8c8. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/USDY42297459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a5eca0b61ef56b8b86d22903ed85c9c89aac9ea69bcc3a315be7cc42db272a2. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/USDY42297461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34dbcc665696bb195aeadff1b73ff730db749bebc898e5797414ab161b842471. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/USCGH2304653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x009192bdfc030aa3ec69e71c0dd51b6188895156991bf6d133c515564aa8f339. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USCGJ2539416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49c8f614d0a33c30a54187df01d0b9e22c1fe32fa9f9ff1ba27daf1be2653dce. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USHM92552563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63fdfd5bdcd47b04a1838191e4da18ff7bff678c4417e29228d32341c39eaf10. Chain 2 (Bitcoin): anchored in block 958493 (2026-07-18T04:34:53Z), 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/USL4R2520704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf06583c35a2df8256164eaa0970d60fc7b8313dc235303a10d2a822924551ea3. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/USL4R2546339.