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 0x51c8754740ea7e6b1b9ed0d5fc71245d43f95bded17520785f8851ac6378439f. 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/082743ff-4032-4bd7-95df-b417517aee2d.json and https://artists.proofprofile.net/proofs/artist/082743ff-4032-4bd7-95df-b417517aee2d.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 0x68f440c1ff77f8260496c53707a7d2d9b1f809ed36dc2270d4d2cea5382f90e1. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/GBKPL2092366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7bd7dcaad1957c19a4afece9a42aeefe72d0fa4f09c192fb969aadd885b9adb. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/GBKPL2092359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da87c09e0f5479a1e76df939fc69a10288bccf2bbe12e7bfb54d1e870818fa7. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/GBKPL2092356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b009952c8ad5d0185703e703dbc0d16344ee9ec0fb06b41df2303d2cbcdc7b5. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/GBKPL2092361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1e763555fdea6a7951ff9ec42370f17dc83440ff51e3e9687fd3c60cd41eb3d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBKPL1945339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd19c31f7b18dde9b615ea90d583c4209c81b8aac00f65d382cfc41e7dffe5b5. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/GBKPL2145896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc0e9a524ffc1c1539c4f95d0ed2cce5aa6c99a88176d671de72500bd5716215. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/USBAE1101221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7380b0fd2fd0041226940ba8ca573af0bf378e10caaf4ba1f36150302df91ae1. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GBKPL2145957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe85cf61c45c3b6330e1c8c1d4415b0d95c111e0c70aa4e273bf78ddd4e817168. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GBKPL2145952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x788199c6a4e4136e512224bb24e30aced0910ca61dbd3697cac441f7055a4b74. 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/GBKPL2145950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x234f927270f1b946572bf016df16b10381af8b11ac38c9ac84b137124e2eecb1. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USBAE1101233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27ea6771a283cde21915a9d9e8b8df364c7cd33608626424995329fd1a46e5dc. 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/GBKPL2145956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef2c4096b45083934ed8c0175207927bd13ed5e7b6b881a511e5b7593d0ee87. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/USBAE1301055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49c15a802f8927d4c444217c3a1095f6b3098e9bfa61ea93ba4adc9bd4f45002. 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/USBAE1301056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd05e686c28cc2ade66bc24f2cca85c670b624c5494006dece0df23440ae268d4. 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/USBAE1301062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524c9a626e002beb840acd607be4ec03322e28db68997fba0533279262a41254. 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/USBAE1301063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf94bd14355897610010650615d66dd7ee4e9c7ffccb4f98c5e687235cf4d9341. 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/USUYG1349667.
California's Finest (feat. Davina Joy, Troublez & B-Legit) - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd29b78c3674e1ae5cd68a300df7ed619a9b094d000dee2138d78fc65bda14726. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/USUYG1457685.