Anh Thơ (Ninh Giang, Hải Dương Province, 25 January 1921 – 14 March 2005), real name Vương Kiều Ân, was a Vietnamese poetKim Ngoc Bao Ninh A World Transformed: The Politics of Culture in Revolutionary
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 0x0b14ad5062e86c23b1f014f52b41876024a5d56ad10a5794dd7d1e96ef84faea. 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/49427270-38bb-47ab-9e1c-0fa6e74acc67.json and https://artists.proofprofile.net/proofs/artist/49427270-38bb-47ab-9e1c-0fa6e74acc67.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 0x970bf97cd01b4545ce9338cc4cfc5f5732a03e02e9b9e8227fdaad39358e2e8a. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-21T22:00:50Z), 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/VNA0F1713901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf69dc103449f6db949a067bfbe7524ee7b35c4aebec2fdfc7093b9ceca4704. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/VNA0F1713903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeccd23f599a7ecfc02b1b6f38a889bbcc6501dd5b826ec987bd20561d733bf0. 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/VNA0F1713904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95332f0fcb25dc433b52078e33a402d81b8cfb99e6b00fd6244d8028cfd084dc. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/VNA0F1713907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb6a5dd972f6d7f45641c5fddab1db850c09fd9ec3b4c4437278da820049ef3. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/VNA0F1796549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x339a18bcfb537009733eb1b513f3989db5ba5120c33010dc0d6f105c7e4ff0e8. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-19T21:40:06Z), 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/VNA0F1796555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd555a73a406b2044efb8b75879b6e0c310b7fc6165fb3e57f45ae8089a4e39. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/VNA0F1796523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85c55c3d634858d82eb1c8605fa7bf8dee5aeffc1040329f7d5aaa1e05069bff. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/VNA0F1796515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x544da75ef12c5e1182780b4bac55ffa2b2cb0ca210f0f4ac01c401b4206e0ddb. 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/VNA0F1796516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e88629ec801875473f50305de6539e2dc3af80d3c8164c857cbe9bb4bdc0559. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/VNA0F1796542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce7f616faf5934d6c50823d1d5f21d94b7c2df6900562e0452fa6da285b3cb8. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/VNA0F1796548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60d7ff3ccf8344403482e227a0d202e814536e4e033dd385a8c0c675b426c6c9. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/VNA0F1796560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c1643079efd3636c1a5ce27d965e40f3dda22484133a2674be70fde9617b3d. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/VNA0F1707279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42847845af736d02c7639520a8c66c3b47408936d1fc199437c1fcfbc2381859. 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/VNA0F1707280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6dbb25acce43eb36e4df429ffc60143c7d64f81851065b3b170c023927001ab. 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/VNA0F1707283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x686785d9627634e147d723a6e61f77d598a9d31772b16db9450ecc57c1c5a6e2. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/VNA0F1707284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a0d138de56867ad2145ab56de640f8292625f340743acda6b3dea55cd290e0. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/VNA0F1707287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb2bc457ee36957e65ce1c0799376caa2efe10322667ccbce4833c1dec3374c0. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/VNA0F1707289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1dcc3cdd96a78c8d490cdf9624c8cd34bfdc40775fa6a62cfaa9afe883607a4. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/VNA0F1707310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec188650ede3a426cca39a021121eb7b871c5dd2028fa4eb1c1b61f3506cfbd2. 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/VNA0F1796500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ee2b2f921dd23fe435afd69095cc6dd841e012d1f7ce0e04c54fbcce5b7e27. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/VNA0F1707275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e69f12789304bebb3d353c610572ec8547ffd4b9bedf962817b4bb19e76769. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/VNA0F1719459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86235edd6242a19d2729d364049ba59855b580312a1d64a868e7df94bdef8539. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/VNA0F1719429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf6ea975788ec5b8bc15d38173848f1d13d5866594bdea99410b64084e0f939. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/VNA0F1719430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c7d33319b9996a2dd7a7d45eaab1cf1813597d673011d038278e774eabf70b. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/VNA0F1719431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71bc706d8449f112c8e8362045e6f7cc9522a29cb5012241b9a9f6040c43984c. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/VNA0F1719466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd956021d9f8ce897d08634546ba842feb768811d05d27691d47614c42179edbb. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/VNA0F2105166.
Đồng Lộc Mười Bông Hoa Bất Tử (Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb61037ccd1cf462f6f336183cd535e8ce91cea5d011c53eec7a3f5d059103727. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/VNA2B2501045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5698891ca9d3f36ff5a612c5c2e85317c1e509ade55331224c5431dc2581342c. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T16:58:47Z), 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/VNA2B2501049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42627ac0dec64e062b3c4155599336e8ed4b278212fd43c447a0d4cffaec7df8. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/VNA2B2501054.