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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b01716d90810a2b8bd730e26ef5901d5706a151ea722b68d7e42ed8fa1c1771. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9d7a82d3-0542-484c-8c9d-440ed3106864.json and https://artists.proofprofile.net/proofs/artist/9d7a82d3-0542-484c-8c9d-440ed3106864.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dcec55a48ed625d979beaa8ab4cd0e8d5e66fd2b4e969fe489a4e139f1eedcf. 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/ZAA640700085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7638929d3ec1a91647788afca49b56e2cd43a4d6f49404a0baaacf6662aac29f. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/ZAA640700129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea644ba8d9ce5a2b41cb22ae2168f691cbd8b37bba6a8fa22300ac61b42b6753. 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/ZAA640700133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d7f8bad2928bbe8ac3c8f9fd6d448f7f8e52a1a283ec95405459909bda16a5. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:22:32Z), 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/ZAA640700210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1422e7fbcc859bbe057d8727bf9d90e1529703fd3590ccd586a0b08baffbdd6. 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/ZAA640800288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe64b446c2d617068ab62a72a4562da1f945a979aa1551047d1461ca5bfc4048c. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:04:22Z), 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/ZAA640800280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc540b3538ba5abe5753cfb525892cf78cc64f29dde0ddb675a14b77091ccb624. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/ZAA640800270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc11e1b657d7c9bfb2bf3e9630c32d49e4528b9999b5152c4f933959432b1927. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T14:03:51Z), 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/ZAA640800274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6567bc2a93b51eeda889d0462c445dd6ce6fc896ed0fcf04c64f62213d7cbcd. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ZAA640800275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1c0fdbccc13e045d986869bef960f1162c4d71d3bd61f554435826ba373deb0. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ZAA640800235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd23aaab810046f30fb5550945d61f8500eae942d8600c2ad809105ca80e25ea7. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ZAA640800236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c3714621ec725b825e6390ea80aeb779a238dc9d08be2a225b3b70c17cdd930. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/ZAA640800237.
Kalawa Jazmee Classics: Thebe, The Top Dawg
Ngwana Daddy (feat. Kwesta, Thebe, Vettys & Vaal Nation)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7cef2371c610e9e8a8711dce96d6cb7732f24744c129692757f9e1b7c2e937f. 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/ZAA011900097.
Monate Mpolaye (feat. Cassper Nyovest, Thebe & Vettys)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ef93ae0c7a0c9510e988002a88018d278764b31a8d87e08d45d98b3fb1c1fe3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ZAXI51800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9269997746f9170ff77266b10aa1d14b08c1500759b339cb99f7e9719705df5c. 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/ZAY361700463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9bdc24c67fd7836bbecfc1b256b71d6bb8972c81d5dffe94dcf23834169c89b. 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/ZAY361700399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e6415dcc325dd98125126b7983d961c84e02eb4c8e39ff136778d8d90a77690. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBKQU1813714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x406d7fe96f64b5f4900298c95e43250f9445a41acc81e4742f83ee18d7d75d2e. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/ZAW7W1900006.
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
No Filter (feat. Anatii, Big Nuz, Moneoa, M.K.W & Thebe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f8963846fa71bbe8cb33e9e8565b2decb77a9de2be3bf8c017123f8351f228c. 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/TCACB1486151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f7b6b2ee78fd57c1e777f5217e3051c68f1928b3146818f81ab4a3708016b7. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/ZAA641100027.