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 0x404ad2976e04c1dc043c59b32c616234be90812dd716235e9054777179c84d2f. 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/db42ce50-450d-44a8-8557-e1aef5984317.json and https://artists.proofprofile.net/proofs/artist/db42ce50-450d-44a8-8557-e1aef5984317.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 0x3e7cf59c27c59ab9007ff7e4038b383ddc7de0c8b99d8b9e4a3be52b72ecb3bc. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T08:07:27Z), 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/FRX282357164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ef6c83e9bf842b6a2179c628ef2ed2267eb1c75fbfc740ef2774c1cee9e9a6. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/QMFME2350299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b8511ef8d7fe3e93457017ca8aeba7788d6d19821c7cabcc8aba5297323f778. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/QMFMF2304201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x099c6ada730322a1d7728f2b2ad030f2d73070883ca22751260220e8f28feedd. 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/DGA072375500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x518368ea43a2ac366e66d1c1ff7a93f209f60a2739ad6d2cb58f29d39449c56a. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/VNA1M2283980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb537c46e922475ef7092a358e200f48f5eeb55d7de6db3e37caadab0b4fefec. 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/DGA052450555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa09bc51ee961e802ed50d267751f58be291f18553e3dd769339e4a6b0a4e5897. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:58:16Z), 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/DGA062487232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c8453644a76a77e6f713b4af7071ff29944aef64aa3b929cbd6674d4d6a9763. 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/QMDA62453828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70517eefd9b6f378c7e9541ee7ccec157df09a2e4ee1f94310f5f869fee294a. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QMDA72477978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd0a99ba295f01db3b17fa4341bfee2bf74aa01db609784d08c79c665a0b344b. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/QMFME2436850.
Ngày Xuân Long Phụng Sum Vầy (Lofi Version)
Ngày Xuân Long Phụng Sum Vầy - Remix EDM
Ngày Xuân Long Phụng Sum Vầy (Remix EDM)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c8030ee407005c70b52dc3ae0414bc8f31264cf12fb5020982fda95bb9b4378. 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/VNA1M2402845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc63695397d7483bf06e3b7f2e7ed397368f4e240adb2307bb7e9e0d4966bcf13. 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/VNA1M2402842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb12e99e205c7c3755866a89aad742e041bed24ca9d377ae475274be8270c43b7. 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/VNA1M2402864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ebb11842ad614b20d863d2cb31338d5acfd7b5ac35ea47986b879abbb9c0692. 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/VNA1M2402861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3489fd50fd42a1b5a1b324a6d1edeb1762379f3cbfd375a46618901558fe97. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:56:36Z), 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/VNA1M2402844.
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 0xd9850db45824d52d58163eb80cccb0bbf88f3b9ac694f7d4fa5e434e3270e560. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/VNA1M2402846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cede36c2b3c67e3a33cd57921538b0e0fecc8f6d818b8e5841f43034704b8bc. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/VNA1M2402847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd9b1d0e211df16218a7ea34597e30053f09b0636b135a5d6584e426055a96ee. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/VNA1M2402843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa33018bac9bec65a56641a2f5e276d664da1f41ec0dcd20d6c7b8cf530073b70. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/VNA1M2402863.