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 0xffa0c40f7bb29b65efe956ddbaa526c8b570a91cb2cdcd077291a45252b5a62e. 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/3b1b8d74-fb50-434a-8c59-87aefe10f6c9.json and https://artists.proofprofile.net/proofs/artist/3b1b8d74-fb50-434a-8c59-87aefe10f6c9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
三江夜遊 (The End of Delusion and the Last Ningbonese)
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 0x535c475043433d9dc3036529dca94f3f5eaae93e5a030613f68df8d4d82ab4a7. 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/DGA052381152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a9d03848bbfb787134518516b5fdff251c3c7260442b928fce23c725040462. 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/DGA052381153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa11577cd4993ae60065192cc6ba160d9aac4454add6e86ffe92af48c51248112. 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/DGA052381154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d26618b122fc3cfe0f9e130b0610d55ad7059e5dd8f168d1b2026664a93d326. 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/DGA052381155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b666fa354666cf3de685a6da3bd8f15d6a55d162020574973632936874bdcf. 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/DGA052381156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e01126754368ce64d251c8c3e69a6156346461b3aa7e55e7e1acd708d87f2e4. 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/DGA052381157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ddfd70aa281068849b5ad5b870aaeb57a1b00d17bf59e1248fbbb1f93600ffb. 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/DGA052381158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbd8851289f171f90a92f06a6cae96fb0b67d38c1e5ec2e2566b87f43cf43048. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/DGA052381159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f25d0749795e84a59223f355acafda3276babaf5708743783666c1c8e0632bc. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/DGA052381160.
老酒日日醉,皇帝萬萬歲 (The Ningbonese Art of Renunciation)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ccb832fe21ea2e0b305b4f5b2b2f3065a6d8bde6900483c024162a746c82087. 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/FR96X2340834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267b7dcb669634f2ac8fe858bc753060bdcefc4cbe5b737f59dd4d3e24e55f28. 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/FR96X2340835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97f46b5bf583374d6d12b593c3e1d604de7102b7fd89aae5f83823a983de88d6. 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/FR96X2340836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e6fcfb7f1176b12cca4ff8f4dcf675b99f6bfb7a4b5fb08c386a4409e30175d. 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/FR96X2340837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cbb17b4108a46199c78c80c4ffc622075d37b20ae53dd341d34ce6c3ecde182. 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/FR96X2340838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x436656bef0d1513be3109cfc6321d29b87b47cbde3b00910d62532ad99ad8ed3. 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/FR96X2340839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45dad110788e4aa5e3fb5785163fec8aa099762735782c65ae3c3175055333bb. 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/FR96X2340840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d8dbd2fb770e73fb3be339fa9f65a681e31760a4ff90688185847eb76bad26. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/FR96X2340841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c237580492b89a10249c6fe189f69a75426efcd70698b8669a62d5be653cfe4. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR96X2340842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6444ea8f0008f958d7da2f1df46dbba9118323216308b3890fd7c7f27e4569b. 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/FR96X2340843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b5025827f4710d8cd6f2af87ea3bfe32be5db69ae096604ec0c30bd7e08b9c. 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/FR96X2340844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94990ec05a3243d39fda09e1085a7d3405f7294a2f31e9445f6722b0a21eeef4. 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/FR96X2340845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf29b9a366b14a20138d7ce5ab53b0e4cb7efe9ed787d868b8ed4b607053eed. 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/FR96X2340846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc1d872251de410a9780e264ca1162b4b2271b7fcbb8c9bb257a5b01a90d8dc. 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/FR96X2340847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33f01e15e00856ec0618cee7bb3ea8f2f29d93ead0d40cd2b00f461ae8064163. 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/FR96X2340848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa411bf9dc8035aa87fc31848fe00a6a080827a1760413cd627e2f328d7fa2601. 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/CNC072101344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86a7fc9c08d9e30e11b8863f9114f6cd81a927b190a5716bc4b92337cdc76c3d. 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/FR96X2263574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce6484b5126b57d446f7506f98f30bd1b687128bdcb8a39f3a94f471fc9d9e4. 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/CNC072101345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x408d4d6e73b227ace3e6790eb5b77633abcbdea43af3ab8d92434a33cdf3ff99. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/CNC072101346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3bbd502ec9d930697567c596766756356d788e7211e6881061f270ac8237ffb. 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/CNC072101427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44c3f72782866aee4fd3859a562505a6900ac22796f5ed5a0ce0edd5961019a1. 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/CNC072101428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a958efcfb474f4f7e463c8f6d1763856db6b2e9893999e4d21b183065f94e06. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/CNC072101412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b228a62a059a320318832130e55571b47c4a0d6a5bc6a758fc87d1e9c34152c. 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/CNC072101347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c080578291cae79c60ce3582c01bec3f0baf363e9870c8dc81517a3d0f9a3c3. 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/CNC072101413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0cab78d15bb90020967d0d53db24249aa5f74e7af25336565d01b5780d5f985. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/CNC072101415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d6bbbd59cbfce325e21d5e11c25ce783709b5460431c8c7d9bbe2d6b9cc7a8a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/CNC072101348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b268f0f50eae0a19a61a78293a0fc3585d58268e206692b7815ef6faf12d472. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/CNC072101414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e48446dec9bb4c960e5be38cc328744a5ace1219bfa37ecdeb8c7474a65e32. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/CNC072101417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3701f5c3b69873520f1ac5471fbd37d328054bc5e672909f7dc29bc2f08c5d94. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/CNC072101349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33232e271cde9095a08aeca361c952ad8f8f3255374a0f660d7cc9b804a7d6b0. 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/HKG731534550.