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 0xfb632e909a7f347db820c5100f7081b03cac4183d1a5022ecc43fc7ba3d74277. 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/275acfdc-69e1-4c0f-9fd3-6322dc5a1e99.json and https://artists.proofprofile.net/proofs/artist/275acfdc-69e1-4c0f-9fd3-6322dc5a1e99.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 0x9ae8b151e6c4b3418892c141371089f6a31b6d0146ae76c1611e1cf9547b07a6. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/USAE81500844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf018d3b07cc5288249d4cd01932f70618b24692ba808059af6123700ead7ab6e. 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/USAE81500850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b9ee4f4bbb0819ac528a7bc31e71cb61d25f34a8ad5420ebdb277d1fae4313c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUYG1094308.
Dope Game (feat. Bigga Rankin, Jeezy & Yo Gotti)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b31b41955219b91c665894e2de2b34ee295f2cfe5b3648ca93688629a30d0d7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USWB12004625.
Heartless (feat. Rick Ross & Bigga Rankin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c88e1a6ab101535831b452f4cf7f191984dca115a5d26054d656dce087c5f2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUYG1131729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53868a328a3c215eba7b4e11641687c1a95f77ebc1312aea16297f73f9f6752e. 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/USWB12004446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae45e74a37ad99fd2883e2719d5bc213561a8316845bb2251f4745cbdbcdd312. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUYG1094301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5393e3d98128ec96e96d4303f516caabcf248ac1b72c3c46ca3a4365eb641f. 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/USWB11903270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2172e1c507d363a0b7b9fe9ab3ee5e2fd09a86a0df465e6f86559aba961d0938. 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/USWB11903284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x222cea2a4b1a135d540ed9979d0668a3aa42f13c0d8807d6be51abfbc8f3ca3a. 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/USWB11903269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42358ff140c8b55574d2b2ea3a29470cedfa76f9b71670b67d535b2df1f7c652. 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/USUM72218959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18e712c32915304e26c8cb86e11fae9bf05a5bbd7bdc939716104ba6e92fe589. 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/USUM72218912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a251b2ee0336e60ffedab4af78b8e5b63bf87771659e52cfb8748225032dafd. 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/QZQ7M2100397.
Documentary (feat. Bigga Rankin) - Sped Up
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb305529d0836bf2c6f5433fdeb666ddf3303298dc494c21617ff24c0648d82. 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/QZQ7M2100411.
Wet (feat. Bigga Rankin and Jada Kingdom) - MGeezy Flex Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x618479c31495932b2b4bfb03f3b908cfa8ce2084383d5c46ba57d05420710c55. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/USWB12003475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x202c78b1a5fa7c49c34edafb9b7b080e4e0c46df7148e9f0f319053ba7c25018. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/QMBZ91943278.