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 0xd664d0b9513d2614a332ae969af915a0bf4fdab882511326db647c8b79191d16. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2a6071aa-4ef0-4e77-b82e-7fc7a2356c21.json and https://artists.proofprofile.net/proofs/artist/2a6071aa-4ef0-4e77-b82e-7fc7a2356c21.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 0xa2ad5da3477192003ee8e0130d0453dbc7704e8b350c304e356f70e650de33d6. 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/TWA452110901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd378b086961b4d32c52091577b21671689fc40d143b313504be2f06c2fa2d868. 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/TWA452110902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb882b7dfce56c78d504f8f78b30292d671774b3c75f925b7e5d76f4d52898069. 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/TWA452110903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa48c1ba4f71ca2f1289b838c96014727548cc1a33672e15e1841e8bee316110e. 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/TWA452110904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40079b6bf95b7ee9e9d94056353d7941db84461c0c11d8e88a3fa7cf17258733. 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/TWA452110905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d1be9089c0c926e7e2ea70580ec5d1b9a4f07e0e33593ece9845c4286e05ab. 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/TWA452110906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87372f609879faffcdb68d0890b810197596573c15546b79aea2cb3db3eb4c4a. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/TWA772201183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x072434a62972c3e433b253596d181237216db1a6d31d8b3281fb4815ffa71213. 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/TWA772201184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeb8134d31cda88303fa7303c74db516f34b5ea131926fa4c27044752507c180. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/TWA772201188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x576efaf7ea8a8d08dbe4d8c5f40c71397583100961e1433c3e6838f498ecad5f. 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/TWA771801031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60fd31a20c59c61c47834eb2f52d3009fe7b64010cd2684d1defe6bfe2bd8f9a. 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/TWA771801026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce2a2856565a6ba4877419abfee4d89044065f22fa41852154bd45f85c84ec85. 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/TWA771801028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b79bf56cd4c697defefc4c0ec741ef4ee2d66507c100ea8ff4177f748572366. 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/TWA771801030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae6892eeff72921ec4f1fe9c005985bd4601d86597bc69f76a5070e88d1639ac. 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/TWA771801033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef07f2ac6d97df4947e90d0f604ba5a032ee443b84c7a9e188e9e671965edf61. 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/TWA771801027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d9b9e7a7e3d48b4f134179c252fe59eb35dbffa1b76cf7a00ea6c091bea13de. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/TWA771801032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a1990c75994bd1f69d0b505182bd32f29d44f1e9c8be703d42ad795727814fa. 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/TWA771701005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc51da41455f40c0cafc2d026f079c0c3b1e5793b179b219335eea0d899e5a777. 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/TWA771701006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd613e2fe33df5bacf87b98474911d55b1131c2a4c09afc75b53e1a989e48015a. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/TWA771701008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c731913cad29c1a19664f2b024d5244d3389af398355fbba79a7907e5684292. 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/TWA771701001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe099cc6664f4751c237ccabd672f04d3730bf9a83e9db3c5634e564edd45bbbb. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/TWA771701009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a67de6ba014b32fd6ec5d34c0ae9a4879523c7b48ca8d9403c3eb346c37463d. 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/TWA771701010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ad270574a76421e759f2adf34a169e51a9025b9060097b16b9971807051d90. 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/TWA771701012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a35d2baa0c6a1f4144443fece28f0e59055551c28f08045c43b68a08bee2c27. 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/TWA771701013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f1ae03f21e7ae34893767f9aa6180805c35a8fac6d84efdb8bfe765d3017923. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/TWA772001141.
你是不是誤會什麼 (Miss understanding)（feat.YELLOW黃宣）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe94a561ad35f5fa9557089bccbd10162f7702e2ba24101a730667e97c910d10e. 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/TWA772001140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9685e71d4d5ddc0559bc0ebec60c232c37b55ec0a832380a5448825353910e07. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/TWA772001142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x576efaf7ea8a8d08dbe4d8c5f40c71397583100961e1433c3e6838f498ecad5f. 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/TWA771801031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae6892eeff72921ec4f1fe9c005985bd4601d86597bc69f76a5070e88d1639ac. 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/TWA771801033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02505928e39cc7c0aad96648a28d7d9301b0da0479a69c9a97eb71522957ed7f. 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/TWA771701014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fbbc5cad181f63c955e3d94ffd88e08193a9a0b98aa0ef0408c5b90af242073. 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/TWA771701018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaecd3a63f7b430bfb7d896a4d4a5cf3f50025d285490da6f737ed8cffac4ab7a. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/TWA771701017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9405602391f38ea38ba5a0ec2b144d486a6c3bd1848dc8a883f7410ba972e75. 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/TWA771701002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c731913cad29c1a19664f2b024d5244d3389af398355fbba79a7907e5684292. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/TWA771701001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd11b8e2cb5942bc218764cdedeca8c6dcb92567bf55cba0e8492f2f0e45f60b4. 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/TWS172000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a2edf1fbb4f599afe603151a80aab09653fd5fac3667fbe8503505bc57fd266. 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/TWS172100027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4aed5e23bdcbfd22b8818b8ed983cf25ee5dd63766dad80c5d2cd2332b8d03. 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/TWS172100034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a2c7c01930ec18823a9d00a98d97b09f7b7d18915251741e01730cd384b290. 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/TWCO32000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x881496430cc5c2f988008369ef3aa5e1c035e3c6170e912e4c3cf4c2d27142bf. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/TWCO32000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75e8bec2c4e7f7ca9ff7d3a57ab1020eac3e698cff24af4bc2aad890ac70b4e7. 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/TWCO32000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3853e1d78e63e1e3bfd139606f8ed25d1edf58d03b0f1de06923540f3252980f. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/TWCO32000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed67480adb872a4d843b823f3f3263b573b3d0a6ed59ee1161391cfef046f4c. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/TWCO32000015.