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 0x62012fd205d8acf4d78c8714b3275c945efdeafce71419e9d18837217dea18a4. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/921f410c-a0c7-464c-9da7-3d4d08a1668a.json and https://artists.proofprofile.net/proofs/artist/921f410c-a0c7-464c-9da7-3d4d08a1668a.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 0xcb04acdbffff4b560db6504ecc0cd43d9c7b1b3ad632345cd10e590a60ea2f73. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/VNA0M1811445.
Thập Tam Muội (Thập Tam Muội Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22caa6975558010bad0137c9266ae37ec3f49d09b70fdd75a25ddf0e5a49f723. 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/VNA0M1811443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ded7e708c1861e9671bccff02f36736fac6ba9aa2fa33844afb82c67e8c651. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/FR2X42299786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x954a1aab8fad7f222ef09eca28999385d688eb2d060ed0189a1112e4143d373f. 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/VNA0M1907914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x318ec97006a7f322174439155364e07b23918d158d413a16d08738e9e00bdc84. 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/VNR011128677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x923c8a7e83bdc6a9b0dd5c7a75f8b636224f3d94fb0879c71ac85a8088f96971. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/DGA052023497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcbbbf1dd0299f06ea450c28f0d174fe6c33cf186d8ce742afc627886a7ab82d. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FR59R2134352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6735a2fcbbbc0b4806dd7e3dce5de70f2e44fbb81af7ecdd1b2897c98f2d2ed. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/VNA0M1911945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf12ce77da202f5a8e589ec7f4dd017e2b9bf4223d82f94f6734c4585fd7d6350. 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/DGA082212090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x762f0576fa6a12d82593d09040e3104566167bf11a9ef3a6b66ca1f9894e9f11. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FRX762384026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1adc4b5443c3e7d8ebdc1af6ecdae7143a37da11d69d452a44309527838888e0. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/FR2X42453302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684a0cd4c8631c2af866c748a6258244d8216b505610b324b09c98c5992dde7c. 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/DGA0S2473510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe065e5ec3be61c4a7d846b6f530cee5ee5a880ccaa6e3f8b3191e04367e6b030. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/FR26V2070415.
Mashup Táo Liên Quân (Mình cưới nhau đi / Summer time / Cho họ ghét đi em)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c5178c8121145d5971c2a21ad3e25d453f48a746d2832a0bc3dd18b4f12ac20. 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/US38Y2543575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e9b796d6d5b548740a3c4bec0fcac3ccb72de75d1a8e9ad3da0eab9f6671eb3. 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/US38Y2542829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43a4610248bc36bd7f4da69e99a23d1f71605d5314f8b1afd0661f8d112f6cc5. 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/US38Y2532366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b7a89d4d363f982ecbcb59bec2965022954f4cd60788aec78ae9ad8103110fd. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/US38Y2542831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3276c2f5fc2fd2a2d12f8215af667a02a6b89215f33255628c1c10735522340. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/US38Y2542734.
Tết Đong Đầy (Tết Liên Quân 2025) - Full Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf893deb4945c3b70a0a5deaa0e84f088e38961df5603a964872bde1b45710382. 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/US7VG2537434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e883f0bf9e087d3a2aba22d385db5512e49d984b32021599535a89f72a21a3. 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/QZW9L2397390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3dc354a4170495efc8a200429535a8f568a1e513ee5c752be7f4b3b1f9b63ca. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRX282240546.