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 0x0e110167d4263b7ae9e57f47434693d35953a8be12ef280a70c26be588a70b42. 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/26c6096d-35ea-47b1-9d3a-c4e48f706a28.json and https://artists.proofprofile.net/proofs/artist/26c6096d-35ea-47b1-9d3a-c4e48f706a28.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 0xfadb118eafe85b686c01a82ed4249b1a2c1541eb840e098c28dd1ac1b9a5ad37. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QMDA72225646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd828bfaa87d96337013507414f0d39c0497d838e2bd6c58b8026fa47d266fed8. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QMDA72225745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bbc739266688bf34f8a2def9df129e5b40fb0e0b7efcbefa093d6cdb5c172f1. 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/VNR011017660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a7929c68d9c12509207374773d72d6a8a8e72ea99ff6b3182874d575afd555. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/VNR011017661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ecf39f75f6d18cba1200b64ecc3c79f95cfd266a5dfcbb5bc9b6aed04525879. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:16:47Z), 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/VNR011017666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb51beeaed4aec30a3c0c3b1e0af5cbe221c4743dd8d82f5fe81e3fa3bdcf2710. 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/QMDA72288741.
Liên Khúc Nhạc Trẻ Hay Nhất Và Mới Nhất Của Hồ Việt Trung
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d7c2672e0e4bf8ff69a95ca9009d07a1a8b9c5f6f4f34b7fc75a6d4a8bcb3a. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNR011047483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9430d3f8f8cd50a1118f6db31bb54c4bbdd0ccda873844cc03220faaac176575. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:32:37Z), 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/VNR011047488.
Tuyển Tập Nhạc Trẻ Hay Nhất Của Hồ Việt Trung
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca066c1233c457749712445c56f6efe6954260d53bf43140ab1bb8b3c21ee15. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/VNR011043610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91211e72ca1cd37a7b79cf51c4dda040eba3972cec9071e94537cf19e279e054. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/VNA0M1902837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce6e9b344e59fe5355dc929c2d9ac61f0cd93092f52c3e2c2da42d4799834467. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/VNA0M1902838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x406d3ebd727731bf3856228889595128efa105d87e0ee25e84d27a0f76fa361f. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/VNA0M1902866.
Anh Em Một Nhà (Giải Cứu Tiểu Thư Original Soundtrack)
Sợ Nhất... Ngày Không Em (Giải Cứu Tiểu Thư Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a55fd9ad99daa33e68d59c8dd1a82622dd560d2a4b2dafdce6a344ffebe067b. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QMDA72283093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ecd8c57df7d6317fce8eced0d389af06facb072b9ed251f2fc871d4d8f6f46e. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:09:41Z), 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/QM4TX2465643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8b0684df4cfdbcde3baa72a1b85424753b4e4d01c29e28812431ce5d6d754a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:33:36Z), 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/QM4TX2471181.
OST Giải Cứu Tiểu Thư 6 - Tình Ái Là Chi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3895e50061878382fa325187e95f963ff93dc07303eee991a812d9546795bea4. Chain 2 (Bitcoin): anchored in block 957527 (2026-07-11T06:08:55Z), 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/QM6P42322842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f9deea030a8d8682b2f9bf9dd0795b496b144d199d294ab3f12612511a3cadc. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:02:28Z), 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/QM4TW2415261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x447061f9d43eae41cde1e2f4b8cd94980b20663d4df2429b9f8e2f1bc4c9c06b. 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/QM6N22465841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf65f1c9dd15c6086bfa8f7f54be03d7ca7013c83ae5cdf970b7641748e12de9c. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/QM6P42478478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x880c8be36ff43ed89346f61b16d2198cb9302eb5e038d95604b197fe41d6e96d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/VNR011134004.
Người Quan Trọng Nhất (feat. Star Online)
Anh nguyện chết vì em (feat. Star Online)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb9b99b10d50d996f83ace48be26ceca39be2fa321bd77b10a46e00ac1f7dea1. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/VNR012500161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x432c139d5f351abe138aaf063469c23bc84a13d97c40151e7f03bc6e3bdf8295. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/US38Y2535115.
Ngày Hạnh Phúc (feat. Saka Trương Tuyền)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb13b7063736bab2a793f459f52d734f0075485855e2b607ea3d4a4026b1ac572. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US38Y2535109.
Tình Yêu Bất Diệt (Lofi Mix Beat) [Ver Solo]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb1ce5a8831b3ab7416db24ab45fd81c3bcec89d41c4d03416d097585c1fccd4. 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/US38Y2545412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91915b608d877b64c56b2bb668903f110e6a719fdaeaac2bf5537c5d30c05150. 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/FRX762547994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b9e6004c09478920d98710a383fcf4fa558d720c7b8bba7243b505131c37b6b. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:04:06Z), 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/FRX872532939.
Show Me Your Love (feat. Saka Trương Tuyền) [Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf433ffde9091d18dd89d846ab08971cc29ae1bc3983e52e942c6fce27e84082. 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/VNA0F1781469.