TradeMark (a.k.a. "TradeMark Condos") is a , primarily residential, skyscraper in Charlotte, North Carolina, United States. It was completed in 2007 and has 28 floors and 200 residential units. Additi
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 0xfce48bfbb630e330011215b3e28925b004b87aa39831787124d8ee6409ced614. 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/0126d51a-cdd8-4f52-abbb-4a41a09662e1.json and https://artists.proofprofile.net/proofs/artist/0126d51a-cdd8-4f52-abbb-4a41a09662e1.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 0x5fb111afbbd06945cd68dd965fff8700caf24f0d4e452fd665458ac082b9e684. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/DEH499700127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba161f1108f4cf2d12690ca92a50cd27a5f4cc43785158854e6bb3405cba3b7. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/DEH499900045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf064619a9beffc1d11e2e5b8318899e0a1c5a687dd2205e190fed5c670b9bc67. 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/ZA5ZI1700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02a9bdaea0876fd4b16f078742dec6349037a8e91f1a985774a97f454408bb5f. 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/ZA5ZI1700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadb3c49c5edd5eae8a77b26b20b723797543ccd210ddc4dbab58f9a056db187c. 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/ZA5ZI1700015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6820ec3e207d268d5b86924930212a9399c51d1f84dc28a38c6c3dd7a0750e91. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/ZA5ZI1700002.
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 0x410352fb9ab9078491d01a6a0bf5364beccdbf01af64a288ef84a536f37f5203. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/ZA5ZI1700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1deeb12c696361826a0762126adffee807df7f366e52979ac7c471319407e3a7. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/ZA5ZI1700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf77e0777df9157289fd7a40718f14376e0bad061a0d6da816f624c2375a0d5. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/ZA5ZI1700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0029e239406dd92fab18ebe3924c1b684ec0375b15f7ac93359fd5c541b9d2d8. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/ZA5ZI1700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc994aa5c2809dfc787db0009e1c82690c438c3118b85cadd454b6856cb5026. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/ZA5ZI1700012.
Uyapenga (feat. Afro Brothers and Makhadzi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe25aa344b8286c35b1431da835167f9337e1c00c1aa44b1cb4145f9066cbdd4f. 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/ZA56E2100092.
It's Just A Feeling (feat. Leon Lee and Kija)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82ec6ce32a1de9a287f0a4c380232774afcb6e73c322852c80c97c7850385bb7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ZA56E2100093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b70b20654e571f74af92ebda36a4a6f17f1029f3726e8241681f0e8c459f6b. 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/ZA56E2100100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2bad1f8197b3a293cfa581b521b0017ee41bb63548e672a5f60bd9f5365844. 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/DEH499700121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1114bbe6b01b440a3676933de98d949ea02adcdb3a25ed11c317071eeaf8136c. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/ZA7622000052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ab76fb7ea251bca2431b64ffcac247ab2c1860ad1c3303d76708a7a933651f. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/ZAUM71600881.