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 0x64d4ac5d3d65d1a973a8b462e8ef637712eef05891f2497167fec6fcdeb7970f. 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/78266419-c189-45e2-9a89-90fe96ed0d42.json and https://artists.proofprofile.net/proofs/artist/78266419-c189-45e2-9a89-90fe96ed0d42.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 0x315dac78637c9055fabcc8a985cca70de223771152e993025dcef4309ff87acd. 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/FR96X2203019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bee57849a829283064e541f07d5ea8d6f4c4c603928951d87b58932ec8d1454. 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/FR96X2202984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa77b96c17deba96b7677386b3b08510554812c87e2db762511ea4693a23d7062. 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/FR96X2202985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52fe6361a37f218baa7fffce6396965b2329fe9a58e0ae4106ef435120b49a87. 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/FR96X2202986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa91d5f3db47e213089b013023cbc9e878e86466d263dfd1ccb910037c32a9bae. 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/FR96X2202987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe28b887f7a9b6eaa0bd192329162ab541de76038bb113816d9d618892670885e. 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/FR96X2202988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a80e4464703103a5af66d72284ae31e2f3bf008d9d1dce80bcfac110d3591e2. 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/FR96X2202989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e723ea13f181210b31a4da3fd9b4af0e62c8ffcedcea31b0e0de87c5ae7c721. 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/FR96X2202990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9748cecf1e4de124dc3a99dee03d1daebe714529aa74abadc7ac83a630702a31. 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/FR96X2202991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d19ff453a35a965e4ed0c799aafcc83f0e8f88a664911e294c9a3016f73b4e7. 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/FR96X2202992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00fd2807c6e97354238b18d71f3f045ce50e9b9c2035c0863917ddfe9fcda2d5. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FR96X2202993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3574151d550de23824d754fffb3b3353f9a0cd3c79828cfecad388c9bb9f24a1. 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/FR96X2202995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e250838257adf5325fafe3076b990f702bd67a6b8f381fbfe7347b532bb4e1f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR59R2298816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eae3164382460ce469017fb85bf720d83e9210ea29fcbab87de52b7ae575f08. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:21:08Z), 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/FR59R2298818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c54f6c9180c5de52b4e1f62f52085aac9e656bca6bc92150da45a63febe7212. 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/FR59R2298824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x487ebf4b7d0e95ee80c12446981dbc2df62075325dbdd36e39e2bd2b9a2deb9d. 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/FR59R2298829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42290e5919dc8a06769dc08086234d03678ae446a94232bb7e31a7f7c461e107. 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/FR59R2298830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x542fa402b10b37e45fc504a185e30625d5ae7c4cfce0af0cb04f289cde02a4d8. 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/FR59R2298831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x814f89a0dbbf220ca8d4448e55425dcee33531c37d84e0b48401b110ef11038f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR59R2298832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3be41e733aeed5f2daac0e1695d3b26e04347327ad5e503704b1bb8fcc5cf46b. 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/FR59R2298835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bd79be6f01b5793cd8515cac141b3599a6a949d90ee2df8268487b26598a103. 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/FR59R2299164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6cc16dbebbedba323f151bb0fd2cdbfb70b5efd0eb46b928c0edb2494c62a8f. 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/FR59R2299165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc319149e5bf1fdf3fd5f4c1e07e64da1a30bf189721e4fabbfb3c7e83dfb445d. 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/FR59R2299166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c2f5711d928fee5334a9f57dc53a4b6ed8f8f67f7e2a3507cb577f08f49ccc. 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/FR59R2299167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb0473af67bbd8026a08d7cebd6199e8cd8dcb4908b4bdb175b002efd1609e41. 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/FR59R2299168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9700fca7d8ece987ad3b94724cfce6d9529162597efac66ccb1903226eaa3380. 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/FR59R2299169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde2d4e60d05a9183caf72222dedb077893b35619de13131905919ad6e90f7074. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:53:36Z), 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/FR59R2299170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5d6f81423426e20017b34d9976139b109442ab400c1e1098977298ce4020e0e. 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/FR59R2299171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc7b363f2475bd9eecdebb8dba6823bf87f12d0fa517e320dbd414cb47f1733. 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/FR59R2299172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c1dd1d74a063270a0fa8c98181ab5efc16d726ef08ba70948444fed37e6eff. 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/FR59R2299173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55b053bce6c8c1b62b751910237df19d75f37f4b007d33661d56ddb3a4e6d2ec. 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/FR59R2299174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ae635a273685cef3613cbd6ab617bbae66f8881033f74bf6daa678c20d695c. 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/FR59R2299175.
踮起脚尖去爱你 (电影《踮起脚尖去爱你》同名主题曲)