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 0x9997c9546b58d2e9af4e2024821c2ffa3a860e69ad8f7a6da6f530f68b7f9d74. 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/3a8ebfbd-2684-41a4-8204-96f560b6ca21.json and https://artists.proofprofile.net/proofs/artist/3a8ebfbd-2684-41a4-8204-96f560b6ca21.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
อาญาสองใจ (วันทอง)
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 0x641bea49cbe28fce85e25c347ff798f5b3c89ad739135d3c257a021f0238ecbd. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/THMOB2110886 — a six-check JSON result.
จินตะหราวาตี (คนที่ถูกลืม)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf79e395dc0990d2edecc27796627874ace0bed8d75780d49071e9c9ddf6c5d1b. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/THMOB2110889 — a six-check JSON result.
นางเงือก (รักในเวลาที่ไม่ใช่ ยังไงก็ผิด)
กุหลาบเวียงพิงค์
วอนอ้ายปิ๊กสันกำแพง
เจ้าจันทร์ผมหอม
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf690036c078baffb05a80b735f1c44e03f7f231d606848ac86ef8317a7a3fee4. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/THMOB2312229 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d2e65243f5e06f52e6749061cb52da7f671f5293aed802ee6e1d8401ebfb41f. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/THMOB2211714 — a six-check JSON result.
เอื้องผึ้งจันผา
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69eb463c396be8b7835b642674db245a02083f24ae873ec11f0e9c7e5627ea84. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/THMOB2211824 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5891c6f6cef76490e1b214ee03c018b65f0c1305b76b833b06f5041e90e9d107. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/THADV1501761 — a six-check JSON result.
สำมนักขา (ในสายตามีแค่เธอ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8b9c7c0da15a3873ddee4cd2495c65065ad2bb12dcc407a83f1b657fd9d551d. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/THMOB2110887 — a six-check JSON result.
รำไร (เภา : นางสิบสอง)
ผีเสื้อสมุทร (รักเกินจะหักใจ)
อิจฉาคนมาทีหลัง (ลักษณวดี-ลิลิตพระลอ)
หนึ่งในเมีย ไม่ใช่หนึ่งในใจ (ตะเภาแก้ว-ไกรทอง)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff6ae400fe4ebf9e9d48d50af283ebeac84ab9b354246b806d7332bb1e2d9c4. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/THMOB2211712 — a six-check JSON result.
ลำหับ (เลือกทางไหนหัวใจก็เจ็บ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55cf0fbc7f01f871af5b3e1f5d83ac23f20ac36b30c111d8747af3e7cc5fd1fc. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/THMOB2211820 — a six-check JSON result.
ท้าวเวสสุวรรณโณ นะโม พุทธายะ
บัวคำ (เจ้าสุวัตร นางบัวคำ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f4e722bd655bfb60793f60e0f0dc9d7b28b7dc1669568fe35a942269133319c. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/THMOB2312591 — a six-check JSON result.
อื่อ จา จา (ล้านนากล่อมลูก)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a1c21da91e7e070176b1a84eae20ca01ec4fe5cf97a3136f3bdef0a459dfb1. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/THMOB2413063 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b8e992275500a84a2ddb33fe75cde8aa02f23155a34eb1d8c4caf3a494f469a. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/THMOB2513178 — a six-check JSON result.
รักคนผิดคิดจนตัวตาย
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f9817cb49f412f1c8138781282d934047eb1fa0dcd6e7316dc21a8474e8add. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/THMOB2513252 — a six-check JSON result.