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 0x764368f4d35b8625b14010b8f3d5a8b0565fa321e1411d9eef0edb1f576777dd. 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/b0b9b7f3-8d25-4bdc-a065-461cb4501dec.json and https://artists.proofprofile.net/proofs/artist/b0b9b7f3-8d25-4bdc-a065-461cb4501dec.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 0xc9d8248ededc74aa47eed95f8b55809498934007b11360b6ea71a90a23e5a43a. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWQ2347601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa86f1464d3c5d2a9a5227986ff793e5b8f100aa4ee72b2315ab430eb00e56f6d. 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/QZNWQ2347602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6572fc718ccd78162f09afcda1486d0c1cc7fda20e34546b6f5c3cacb42448a4. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/QZNWQ2347604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb26fc92f2721831f20db0299e3206d8ec8aa0c87e6a106cefa4a1a0868b7dd. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QZNWQ2347605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfc6f6ef9e275539470525028e327a5e8c50f9222a2ed34ee8a8a38458dbbd0a. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/QZNWQ2347607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc49f69013d90c049715c13a189a4160d3df744590c904fe7e68f62e47048b684. 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/QZNWQ2347608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d06ba5de39e6d50d6febabd2173f9a576cf45f13ffd9fb3b7db81b6db29e526. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZNWQ2347610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec855131b8dd9e7a5a63482a795d582baa0bbd2a8496a4ba5a2b368adba5b366. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZNWQ2347611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f297fdfd2100cb43ecc86b4352dea91db0379b39b62ad1b27b222f4cdcf6a76. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZHNB2337574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x637d16dad9a54eb61807a91da621138abfaeb8f40530224f840179919e262f60. 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/QZHNB2336959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab7062b464c77493ac8d6f04157ff7bea5873b022bc31dbf38051fba7c6c110b. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZHNB2335333.
ບອກໃຈໃຫ້ລືມເຂົາ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x959e7d9cb556b1168e447b0fe2148d72b975e6aa599c265b39e418560aee2057. 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/QZHNB2336531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdacbbd3b21191b697b0aeddda805b773f178943c7a2ecbb43ad3beab4e018b8f. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/QZHNB2336529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62733ae1d39bb6eacb016a0c28b914046ce580ddeaeb8d7f9b9212714e31cfdf. 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/QZHNB2336532.
สาวแม่ฮ้างแก่ / ສາວແມ່ຮ້າງແກ່
ลืมถือเงินมา (ລືມຖືເງິນມາ) | แดง นิพน
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1742d26512d38e7fa86b078ce20cbbe7868ed7059b41b3a504fb11ce40aa47e4. 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/QZTAZ2498238.
ขอสาวบ่ได้ (ຂໍສາວບໍ່ໄດ້)