Palmyra (, ; ; ) is an ancient city in central Syria. It is located in the eastern part of the Levant, and archaeological finds date back to the Neolithic period, and documents first mention the city
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 0x60e8f663e91f23a3ab37158a4954e9befb5bdbe427b94b5da747fb30a2507b68. 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/1f86e2d0-3108-4964-9ff3-40a20dfe846f.json and https://artists.proofprofile.net/proofs/artist/1f86e2d0-3108-4964-9ff3-40a20dfe846f.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 0xc5f4c9c9332574bb6e203a7bee02cb82d827f4a80acadffaff61223b52c936f7. 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/QZHN32249650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe242c75bd7217741f3acbba17a8de28ca34fed38a6b0b919ac3d32333dc8051d. 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/QZES92290258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c023215a2a2b09e61ae940cf8e0ce3d8b1217e8585acca6b63d907625ac7562. 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/QZDA52239685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf05096727394d0192649b4c2de739ac980267f122ff4b77063b8a70cdd772100. 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/QZHN32249651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b3372b8efe9c05ce065d55101f2ce6a9c3aaba7878757aecc71c26f110317c. 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/QZES92291801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20cf26411e34d220b32178d48691282c79291d445d851d649a5b3fb7ca3aa4ab. 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/QZDA82286232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b4bc7252b955990f8bb88acc24670b5c561aa1373954656edf1ce793eca623e. 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/QZHN32249652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed21c873ee6f7bb950bd6ea647a8e838478a9feca1dc8feb5dca5b53ee2fb3eb. 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/QZES82328040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c99c4083d9c8a207e57505cde645670e90f285c0e1958e4747ef16d721b13e. 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/QZMEP2348100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b1d01654a1046dabdbbb4908724932db8046b8c6a59ae9ed06b5ab6748853b. 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/QZTB82392104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd8013c3799f181bca9e44b5b4d5266e97418861bbe51050d12ab2351974c302. 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/QZTB82389136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68df035157d49eaa64dbbd94dded167d599b900f49c7365ff1efc790f1e2c4ac. 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/QZMEP2399719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95498face198dc0fa035581a095667aa4156d3ed7f09d50fed0ebd1591b2755e. 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/QZNWV2393780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c2fbf39729cd27f724cf0cb9c9eaac91136b7bd50e12c7215ad8cc0d24a472. 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/QZTAX2293775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eae04d7dda86830a56624d54f44e213bf3ea73f20361f32cbcea822cf049be4. 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/QZTAX2293776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb84b43d3412610f8babf8cb889f4db5030e32bc7a6eb0b7b98191e2aa0faa4a. 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/QZTAX2293777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa22b10e4256750b2e7e73eaf25cf14af3ec0a1eeaf3bf23a5eb348eea1fd392a. 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/QZNWS2178264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a6b44e21e2189dda4617b52a8fb03d83d161ffd0d4fa5aff75990968cf7f07. 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/QZES72144330.