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 0xc84537c1c9a21bf6676151e3f1a653cb921de37e9fcd020fff5c0b6770438cff. Chain 2 (Bitcoin): anchored in block 953678 (2026-06-14T19:23:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/61c639cc-d90a-49e5-83e3-272052719c4e.json and https://artists.proofprofile.net/proofs/artist/61c639cc-d90a-49e5-83e3-272052719c4e.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 0xfd52f201f0dd15d7c98b792871f5ce541c3ae4f201a53df35bdb999fd6217151. 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/TWCC32008316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45907fdb1bbde429760211fc1c50af6396927ebef3816556b9123c6a8918ace7. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/TWY332000008.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7851de5f1216da2ed4a384668aaf9389dac6a555dfe52a47340e15d29d01a2e0. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/TWM032413001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f8630c2d1865c92a097d904fdb63fef08e6bd3d7cc752a7a85501fd3839daab. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/TWM032404002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59ce7667a2a65bf7570f80d6fa1fd3bc658f43e7f8133e215cda7fc6549c5f38. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/TWM032404003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x400babe12bece7d0ec9c55610081ad12640eba0430acc696c731db2527ce4b0a. 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/TWM032409004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce03ddf0fbcf0be183d8a942ef5271d2a83c6a5b88b7b4fe543c0c47c2fe2e7c. Chain 2 (Bitcoin): anchored in block 957198 (2026-07-08T15:54:54Z), 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/TWM032426005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcebbf1720455ea106b364d408d093f9cd1db254edc286e0a497e91a769fca4ad. Chain 2 (Bitcoin): anchored in block 960384 (2026-07-31T09:54:03Z), 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/TWM032428006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x893d848bd6660deddbd04821848986f2da92410269a393f07f9d944d69791637. 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/TWM032438007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e03d0bd7bd86679f79acf0a84af3935805ee5b460452608a2b8da1914fffdbc. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/TWM032404008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a0c759497359554c37d2ff5c2b5776e8625c4721b71dfd02e081a83fee530e. 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/TWM032428009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0448e15ffcbc971e183aed168f9f877381765a17bc508b62bc8e7ae1d30a4012. 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/TWM032404010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54402fa92bb37d5614a963021de5fd33d574c1491f4873cf632ff9e4763a09cf. 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/TWM032428011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a6499b9bf81c5fd47ae2ae63c3be71882fb82381be5b5d35d07f78623459533. 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/TWM032409012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4cacf4d4077aa12db60f893f762a4ef3e1043c4e0f73e1770eb01f6a1c6eed9. 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/TWM032438013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf11ae9c02d3e62c09524ca1a2efe90075a69cd841873aa54ad3c19a838c371d. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/TWM032404014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aebb4c045134af5cf35d2fba51b0872a99ca7c5f7e01802f826795fccdb5067. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/TWM032404016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a8775133c2fcb75b7ee43246ada75958c460b52df75ec739885ff2e6bbef35. 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/TWM032426017.
可不可以，你也剛好喜歡我 電影原聲帶
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa005f90218753ff4905dc36154b5c4468bb6113af8be767553638aa875111b3. 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/TWHQ32000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a922e8ada0550a7385c6f89a53b2375c919e14c86c5af3cf416f9af252712fd. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/TWHQ12000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4508c08551a10ecbc04610c0c31f73b2c19441d0452c9a5a932ae96ae041f6e2. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/TWU712204417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe2f52ff775e9a3ea4b6182f8ff33bdbb268d3e732f58f6e55219ac40941e5c. 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/TWU712203838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb87253c25446211c8d4c5c2ba778b7d28e7949bee993d1c073452f0c592549. 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/TWU712201306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82d146f10c06a28b3058735baf67d33216b7f35ac138ef2128157504bb9629a6. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/TWU712104156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf8fc96d2873cef7df6784516c7aaafddbe011ff1e33daaeb37e3794237d414. 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/TWU712103492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x240b3a684de415228831ead761e1298a6289f25af51d5b9d9c2304c83af4da32. 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/TWA472008006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77aa69103cfd0def669df35c237816129d71dc18549f159a4e38bfff99c9d839. 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/TWU711904670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea4f83cb816788ffa9a8906ddaf03c17d1e47203e20228b7c90544e5555d3a1. 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/TWU711902871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aac1ba9a5c18dba2b442cbbc8457d268c6f78a6e9f218884b607b2461a312ca. 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/TWY332400003.