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 0x617c5c58041c980f85afbe0513d08b03dd7c5ebeed4ef37dedbfcf1c567fd786. 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/f05afa0a-ffc8-4ead-99d4-a57873847808.json and https://artists.proofprofile.net/proofs/artist/f05afa0a-ffc8-4ead-99d4-a57873847808.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 0xebcf9eb8f2ba09293cfaebe7c19064c76055e6faa24b24cdde6afb8b3b9b0516. 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/QZYHM2374710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58c173ff8a0e6c06a8e5820ea6feb79f5a9c60b75105efda11a6cd0a70bc0828. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/VNA0R2400615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f4a2b2c3200c2740e2134ef8d2427aef7a201688898e9dea7cc99d3069b27d1. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/VNA0R2401065.
Mở Lối Cho Em 2 (Remix Version 3 - Tác giả)
Mở Lối Cho Em 2 (Đại Mèo Remix phiên bản Tác giả)
Mở Lối Cho Em 2 - Đại Mèo Remix phiên bản Tác giả
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd07f6e48e012f0e8b1642039e479e1faa3201d7f710d9a8b4bba652eb78c06a5. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QM6P42507384.
Chẳng Thể Cảm Hóa (Huy PT Remix Version An Clock)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8dd06f81796c2e4572249e69d83e9dc8a3fa2eb8c666dbca0fd0f7f7e6f2ff0. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/US38Y2542701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f7b771f0fcd848b1059e021f0667722a336a3bed3b66bdd9caa7455f6b2994. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/VNA0R2501494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4189e3d9611dde2dd70430464c39a7dcd34331a6b0e4ebf6bf348c7d10fc433. 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/VNA0R2501772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe39f2b3b0618df3d98f7fc1296dec368c98348643483190ff7dbc4e39a4cb4cf. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/US38Y2597865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f78b320fe22646c2e984e302e4e0ccfcc1a02530a1c388da32f362ba1856cfc. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/VNA0R2401135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cfdff671116123bdfd492611e72e4f3625ae13f6303b3617ed8d73a83a07315. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/VNA0R2401138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fffa26f6f05948e05fea9667a45bfc6ebdd4495fbcaeaae5cd5052a2fcb5b2e. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/VNA0R2401687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeef4474f3a162f55873d3140ca1c392085aad4f8cb2ed143d00de346d7ac68d. 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/VNA0R2401688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc653bb712a9a85fba6823c02a6b5d272232025c1927a863fc4bd2ff4b9dba7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/VNA0R2500618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4f4c7c12230d0f2803ab0fa6085e04b7bf3fa395d61190900d7cb77dd496651. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/VNA0R2500626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060f6c3e1800049e4e4648b22947df98b1f6836675a364a8f32c9e21afd6f52f. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QM4TX2563054.
Mở Lối Cho Em 2 - Huy PT Remix New Version
Mở Lối Cho Em 2 (Huy PT Remix New Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d6231dfd92f61617c08d0c2904236d13c4d0d5939b9fa929b9b336555c00fda. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM4TX2554915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b213655c7232460bc07635d74051b97c556aa658da1f3f698d83cce1bfa292. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/VNA0F2410405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7183b3e6ffa23518911d483f3d9f75cbb0333078208ab1d1416795fd2ac3fd73. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM4TW2530994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4697b4fcc7897ba0a1aa15fcfc41af9020fd4b8a904026bbccefd8faf1a57429. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM4TW2516925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc2486eb054aa97c80ce40cbcf4aab32d90456e7a922987170a3a4f8434bec48. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/VNA1M2401309.
Anh Phải Tự Lập (Prod.Tuan Remix) [Mixed]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8c72c0668c13b5bbc5a97be1c30f583934c0ef1bb88be8cdf7ffc791ffc564d. 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/VNA1M2400418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c7f7463d8e017ead61363dab89c588f3056a7719345f448afc63ecfd4112c9c. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/VNA1M2400336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5db76eefe990dee2d00cf6787ad88551d067461fbe77004d11f1b365bd0cdb3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/VNA1M2400298.
Anh Phải Tự Lập (Vinahouse) [Kanie Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9d3337cad994b9c06a87f1d975b8e30dbca15d0703d19ff3f85d6778f27ea0f. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/VNA1M2292196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73549fcbff91a1db05f0fda6b587243f51855e1b0cf164d0a1d050b31ef058fa. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/VNA1M2290046.