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 0x56017b7b37e88123f0dcdaa09028a5d7488f91c488c0548ffa22e2ea323a9646. 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/c0e435e6-49a1-415a-934e-56909671c02f.json and https://artists.proofprofile.net/proofs/artist/c0e435e6-49a1-415a-934e-56909671c02f.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 0xf578290272d7b85041f83594a68a38e7065820db53f906ea0ecc17a3b37b77d4. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/HKG732018553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca2507d038be2d5d4568ac18dec72961cd9c01594701e3f276a8c9e67b83b06c. 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/HKG732018554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8512573fbad975d354552ba8d9658be161bb659e4f388df59570da2cdc7ecafa. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DGA0S2400660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4ae434e5c1753f52f7acf3b1a41b44449c002be3629c5816b584910e591665. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/FR2X42576042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x791247b7706920fa4d72d32e04e9c0217415e4fd87dbe7eebc8a1f4345ffc98e. 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/FR2X42576043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa24477f12659f1c3c4f584332c92aeaceb8f438f9e55aacd17dd399873e9ad5. 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/FR2X42551913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab410a1d48f6f5cab4ffdc9d9fab81eeb81f2a9939fdb9b7267ba99ba73a0b64. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/FR2X42551821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d5cdb5fbf42c05f0fe1b1160e39421ab8df3e153df1561d493636bfcb091bf0. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/FR10S2591807.
你是我的海市蜃楼 - Dj京仔粤语金曲版
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dfbf0d0f406c8ff4663021fbfd889fcaf7f4afb21fa55b47d2d2862824f2516. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/FR10S2541931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde3b33defc13012d8cd8bbf75a8d729f6ffc14138ae16f586c1c238e45a31c79. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/FR10S2541965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb316c1598d18610ff4d5b1d7d6159fc92d215124114216bf247e21727f89ab85. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/FR10S2507004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d2e332de9e6d77a7684b439aa924dde4e5426cb664ef69425b3fe89d49a51e5. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/DGA0T2465048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe82f257fe07bd063ed80e4795210ffcc4b24affc1350e21c4ec77e7504406902. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/DGA0T2445172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x432b9d244b7e7d2b960051cc06dd59bf799e070c1fb730b534a1b63fa11f27ad. 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/DGA0T2442859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a7b38e8f3082041a340fd4d1aded2d76cd8a2b919a9fe8ad5d55c2d1b477104. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/DGA0T2428223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b0d3ebbb8f666e51b03723893658c979277c63260fa63af67bf3ae1ab0c28b. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/DGA0T2421011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84525a86c2360ef47ed948f68d1190270375f8f304c1306423995999dfa2cb93. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/DGA0S2451769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff71e356d193b3b090360ce94a33efd913929de6749569948a290a14d4ff828a. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DGA0S2415605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd276a715bf6bd9033748432d28702279a8fbc6227bd88a17eefbe1ac266fa5d5. 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/DGA0R2497265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86144310c34efc404775790b11d1af79f962460ae71cc3ecdd0edddd90ec0e7e. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/DGA0S2479728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2709061f088f844e8508e19a96f2c42c0cf4813c59b2fd5019419509ba662a60. 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/DGA0R2470243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebfe4b6f67804eb6155c77bbec45e2f2dc54bd95de9950278079e7b907bfa1a5. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/FRX872461634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x552c03cbfc14d59b7c8322ee5d528bb4e6c4e19973ca5d5620afb95606b86db1. 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/DGA072318496.