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 0xf816284aba2208e891e93d3c25a08cc64ccd1dd85db63dbd7d1dcae031168e46. Chain 2 (Bitcoin): anchored in block 953667 (2026-06-14T17:49:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5642d3bc-dd2e-40fb-92a4-5b6c06be09e1.json and https://artists.proofprofile.net/proofs/artist/5642d3bc-dd2e-40fb-92a4-5b6c06be09e1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
二十世纪中华歌坛名人百集珍藏版—关牧村（二）
二十世纪中华歌坛名人百集珍藏版—关牧村（一）
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 0x9e5a4810f29b0137d0ccd2951138b3ebd187ca6e4633f351e6aed26f105ad9c8. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/ESA012360560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8109dd8b0efa451b103f5ced0159331ed87fa58de09d8d2e4750f1ffc760a457. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/ESA012387504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ca4364b5f87b00ff41c44ed698c8be69b36e4582d5dcc410307ca4c5e797cc. 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/ESA012387505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd10af93001639fd5b9c2e9efaf44000efa0aad93d56d1fc8c94df15fd24dbfe3. 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/ESA012387506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d7f1d0be0c0e21ef1045b5c11d1203b097b4daaf23ecac4c9601a88c2a4ee9. 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/ESA012387507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e74e3586cd4148572286fcb2d4f108251a8ba20d2f0ca35b94e31a24822a7cc. 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/ESA012387508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb91cff3bc718277760d4cdc058473f2e4a050745c733939b9bc3eef65902d808. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/DGA0L2310179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70ff8e09b90f1e13dbb7c55809b70f96ea2e386ddd04090757b6ec80d2643740. 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/DGA0L2310174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8abc29e5526cf76788d9666d45ac56f68e0390c83b172224ce90515b68bb809. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/ESA012396070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d2d9496d28a026d7d44a949d388f785b6192bbf30f8a2be6c3eacb853e79510. 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/ESA012396071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e65feb1a34e8d6578e5c1c3b82b409c25315c2b36438001e6da2f2379ee1b94. 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/QZZ972332629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd28a239c69401117e8514a437d277e7d67b28fd32bb6d539d0cab659e15c304. 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/QZZ972332630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3020dbc3315b22dae82b4ad0d96f0763797cc2f22389a74415097c04d8a9081e. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QZZ972332631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a7e862a348a3c2d50abde1560f5c19de54cfc73aea2fcbcff13142b09eee37. 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/QZZ972332633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaba3b0a0cecbc96e72d8e33bd1b806040bdcd66bb2639c915510df31440ebbb1. 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/QZZ972332634.
中国的月亮―中国歌坛名家赏月歌会
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce94f100a6f3cb59766a070836707990f5013d6f92a0c1d3d208068f174ff392. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/QZZ972351805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb3c5a40e9c79038d9c83e7e7ebb0e47f5431d970354990447834a290b8e83bd. 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/ESA012375416.
一支难忘的歌(电视连续剧《蹉跎岁月》主题歌)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea61040c498bf8499c26a0fa11849edcd78f4f9f61693f79c9f7990384f0a49. 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/QZZ972351349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x447a17349bb57880713baa47972b0cdcab039869b964eb6ecfa4a94a085c2950. 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/ESA012370090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a8f03721254d5a9df46d8539897e1029dc8220baa9962467ae2c0e285a9ccee. 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/DGA0L2307937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a0ba55ff39abbf5342dacaab6f48b6039f09090d7fbf13cbaa0bf1a22e862f3. 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/DGA0L2318525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae35992b385cb7aaff2222a7c8bccdfcc81f8b9e25d3372f6dca3e58dc8fca68. 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/DGA0L2307916.