1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a4768ede25e36ffb163c118b9c92f2dd97eb384ca6def475c4cc207becee36. 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/d7fe7bed-4700-449a-9ff3-7f28aaf714f7.json and https://artists.proofprofile.net/proofs/artist/d7fe7bed-4700-449a-9ff3-7f28aaf714f7.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 → block OTSBitcoinBlock must exist at that height 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe46f8be601d7698bd37d05dc15bde5e746dbcb44861b1d985e18984cd9c1a4aa. 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/FRX202213793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f85f73c67eae1e208e25de8500ea404d51efc11bc951cf1e49edb062830dc5. 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/FRX202213773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8af807004c393ef1958ea3afb73aad2f99ac9bc4e77db28b927802e249f25bfb. 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/FRX202214817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7aae137f7928c9d1547b7727657545f40484b76226ffce8402c3b26b5f12e67. 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/FRX202214827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf631d96e49954ecc245ecca077176c5178a924d5feeb9f558d4ca3b5030f332. 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/FRX202222868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42d5d8fe72df168e0f952547387105120d1d11bf2b0227830e9a138ad3b07500. 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/FRX202222873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef7d26676a4b17d3c23c91a72f96143d68ba628adb3f8af6a545d33dd513cd29. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FRX202222882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4aebf1396c8fcdc1297185ed505a4059a4564a0e5640666d65c0353b68d13ba. 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/QZXLZ2308386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d759984708d93849f7db7339f53eaa48c7591f331f6b71c00a56444160665c. 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/DGA062296991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ebb5cb3728cec93d6310f21c704969b14da71a3de4faf7eee36eaf144a3691f. 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/DGA062296993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd921d94d385265147247422ec0b3ed88a3904a832f7aa7f889dd88f524634e7. 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/DGA062297001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8da899d5bb2e2550dce4af0fbe52724d0f723a633dd7a0786f498bcadb69392. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FRX282241514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcccaaeae024ae87408d3eb53107d1f67fe2ad7cfa5ce1cae25fb32141c5c8bec. 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/FRX282241517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9b2b61234a40be4e100a17fc33d0092fd6b233c2e21da4b1fe7dbda5b32e999. 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/FRX282241520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a3b5db1ef341449521e374d0e29620e390df6589ad0bf4690eb815ac966edd. 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/FRX202249764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bc3a74fc44e4a771f179df3fb2cf6fa3595c89968d6deb5c79faa0e79e8fa4c. 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/FRX202294997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb29902a4f41c1f9ad3fa176ddc8463afee282d2ba4e4dc7d8efbe69d3f669a1. 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/FRX202278418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f825992bf27cbcdbc0dfd0ae4898a322f5f9c9540f11df2eb3ff132cacff4a. 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/FRX202278422.
共和国的歌声 (纪念红军长征胜利70周年)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd605c2aa5b7904dd2ae925e5b597ce0d3dbbcb8e5b0adc86418831f2cf9c9758. 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/FRX282230400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba9c2971674ff4a1d7e097d736c7645cbc834ada151888985310c4f61b8a9888. 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/FRX202276164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02229ff632d0496aa3b4d1476badfbfaf44e78f685ad6ade17c74939d3707a0c. 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/FRX202276166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9dcae13fd4c82802614ec46b2c9f4a4a8d661738bef58961f5717647e5405e5. 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/FRX202276178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc093d947eedaeb63ce3023247596715da870720c31750484bafb7435ed44db9f. 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/FRX202278357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf72fe05fd83fa3461fa4023c68a2b557a123cf103eb0e1116f8de576d43e0961. 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/FRX202232471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f5ce81e6cc310c2306c8663d32e0d042d9857c68526b53f9a014b06fb032f9e. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FR10S2387130.
九九回归世纪钟声 (澳门回归珍藏版)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f4bfe616dc708ebf26ae59eef6da422d50cd02c3d9d12af53356cf4df8dada0. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CNZ781903011.