Shiwan could refer to: Places Shíwān (石湾) could refer to the following locations in China: Shiwan Subdistrict, Huazhou, Guangdong Shiwanzhen Subdistrict (石湾镇街道), or Shiwan Town, Foshan, Guangdon
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 0x4d347a366cbf304fc6743676ffabf018ca8de02b179ff57b9a79e008c053f669. 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/ed593298-e9c6-4bbe-97b2-9dc0bd92626d.json and https://artists.proofprofile.net/proofs/artist/ed593298-e9c6-4bbe-97b2-9dc0bd92626d.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 0x30a93d53adec3e9f726c033a553fe77a3ce44504c41b4ff44e7e899aee6701a7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZFZ42252936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72e3d8e0f7b3d1563651546aa9ab61e77f36b8092dfe44c3b667aa28869907ca. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZS7J2118905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b37ec9ce150bb52a2747bd5a0c422d25063f0d40f30073a729fa2de56139d6. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/QZFZ42004467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b538939fe4734dcbf849b95d4576a98dcd813b4d107ab6adda7756c138f2aa2. 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/QZFZ42004471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8978454c9cbe64e26b26efaa15d19493470fbe1f23c322938102e594eca5734. 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/QZFZ42004478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf37c10ca01905861e79e8257827d417423b8676597596511afc5a3516e3eed02. 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/QZFZ42004479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a0ae6fa7f2b8193fb6bae6ae41dbf261bc1cb8e4d0e511670e88c98c63c545. 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/QZHNC2009641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba755685eafe1a6e74f7ce3ac8e321e176cb505fece87207d13e376a77bf6137. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZHNC2009642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf234ec5633354c03885809266bfd80fdb71efa5e2f02d2062e85eb559ba672. 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/UST8K1706980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x922a2735cbf754362c90066a0d048aaaf7c48fb114138f30e16f1411daa732c0. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZHN42437537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8fde17a994e2501604e8f816792f92f0a718e0b1829e5de61b41d4ce7e9daf4. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZTB52324549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaec8e43c46dc989164901d100c601b096ba6bd1f9d3cb41d2fc0564743551cd3. 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/QZTAY2393003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc246f359595881d2669a226bef082f14a85cda472828cde6f668e584173db6ad. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USACX2000749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98f3b24b3c5e76df5dfeed0a1e87ce2fb94bc68b860990bc4d57215638b0ca0e. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZES81973827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf661d8079860392b41c04982ab4166d2ec4734245972086dd6d6ae6ba6909492. 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/QMPKX1860159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b538939fe4734dcbf849b95d4576a98dcd813b4d107ab6adda7756c138f2aa2. 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/QZFZ42004471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x240085f5bea5d4267b31500512f718e085dca5c90272e7f87923317af21f125f. 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/QZFZ42004476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2125bd4ac6fdaa54d4b5c25029e9ff0dd78a70e00302d9a86bc1866f923bef71. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZES92564514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a961da22d4d24ec461fcd86784050db6e1baa6e36846042a88a1b026fa6d63. 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/QZES92564516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x930c2dbe82da6fea58e083b958b66ad8b30da5dbb1fbfd1b310e438a405bc619. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZES92564517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb943897dfa43b3f3ba3e8d39f53fa0ec6935b27b222fb06c1ce7a4c0983fb2. 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/QZES92564519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x840e9983047af49ab4db2417660fa54ba75f5cd3e20d06f7c4959845fffd989c. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/QZES92564512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eef41478522e77f70d53ac444d8254b9248a876bd1dca65db58fa4ffd84f2c8. 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/QZK6N2528146.