Sempra is a North American public utility holding company based in San Diego, California. The company is one of the largest utility holding companies in the United States with nearly 40 million consum
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 0x25f6ebdca4abeabf64a15b03f73f225dcbf018851d107833b9d4e3cdca619f65. 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/06c6b31a-3d0b-4fe4-a136-3138da471e8e.json and https://artists.proofprofile.net/proofs/artist/06c6b31a-3d0b-4fe4-a136-3138da471e8e.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 0xc0a3254c6d74471d7b5b28ca49fe30ef233dfd978482d1c0ba7975071ba44c30. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/NLCK41093662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63522f691797693b8f2ee4f9a1da89505cdb87b96e3aae9d4d12cdc59d78869b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/NLCK41093663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7327b422733df9f644d4b5520f3abe3906e8cc772af6170c05329c7771dff90a. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/NLCK41093665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x094f3d98d1e17762c29426597e52b69a1f4f196c3fcebd642f586e0cc0bc48bc. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/AUFF02200117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd090c06cc1356c62978e7e05d13fbb7c7dcb06cb431150b27c0866f3bb964bc8. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZNWY2284895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3617f36e8049b147611c5057f0e339dae0e51c33fac07dad1250bb201a6cefa0. 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/FRD9M2300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa838d53d99d43fef24ab886d9af51cb6b6ab2e9826bb23cc33f78f9cae03e1e. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/AUFF02300430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37471e9a28047ff993368cbe8fdc644f4ff9708f1643a3c2457ba997f73ded1d. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GBKQU2451233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe92a9807630a9ffac735f8c089189ee30df2e32748dfc4fb38ffff0c8a70110f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GB8KE2416617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcddfa89fde6c1c565ffb752f736a51e95c89de148ce18102f2f6e2b39b3bd59. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/GBFG92500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a316b025efcbce79341f672cb4904ecc0edf811122012665a770c21c6af67ee. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBFG92500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe748a61e943d9a3ec72f3fddfa8e0b83be8c98623eac4086019d0a8f739dd19. 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/GX3Q92525280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f5645d746a187322264f233e745423d09fcffbf8e6f229bbb84c2098a14a272. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/GX3Q92525279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe748a61e943d9a3ec72f3fddfa8e0b83be8c98623eac4086019d0a8f739dd19. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GX3Q92525280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3bc8d09082b2089c6b1c43ea37f89a79db78533b26fd21a0b6404630fec97ef. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/GX3Q92525315.
Close To My Heart / A Little Bit Of Trust
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c68fa75f238d99256e6a17c08b63c9bbe01b25d99c6fc239e7f6f2499aea254. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GXHND2502800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13baa1b37115455eaa4833ff4d11bf000b203bd0f4ea856c7855367e0a4f63c8. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/GXHND2502801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5acc9dc9036d0be8e17f915bb08eec1723b26acd297465ed1f8fa30fbe948cf3. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/NLCK42514312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c9b601544c64f9377e475fa60227d49579926fec43645d0a411bb64a271233b. 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/QMFME2356961.