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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf58aac83be3382309d9dae1a64b4f7756f93c3db36883f7c0dd580520b2b0ab5. 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/67c3ee9e-dd1f-4fd3-bcf3-2266c2e2eba4.json and https://artists.proofprofile.net/proofs/artist/67c3ee9e-dd1f-4fd3-bcf3-2266c2e2eba4.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3923d50b235ae8dc37378e2cb435e6a40c425c05e7ee09fa593af8bddbe9c184. 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/DGA092436720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f2f56ae04f29e17d24c5c8e638dd65a723fa1e64f6a533ab64ad3a51253fcb. 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/HKG732421959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x097b8919c034c88b01babdce43f5c673937103a428d6819d39c0743903fcf47a. 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/DGA062465761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77842c344a844101f7169b72c6ab3bb99825623b5dea98f5d9d7acd7fe15ef0f. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DGA062465763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7cbbdd859f156b6e2aeed8be07e19ca8a187f64fdc05b046d96cc3da876c9fd. 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/FRX282436325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb01ad89cb4a64a055fc7330862b9017e9d536673d12d3d0249cdfa8c144fe323. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/FRX282436326.
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 0xd48ca718a79f19d6669dd4661030444ff662acc2fae28a03c2785137a811e078. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/FR96X2467816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41cbb87513a717dd58f31904cce020b1a23de9a7a50c44a0f6f947e383673423. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR2X42437948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b2020c17c0331fb6543699da03a3b3015efe9d2c94a033ccbd9fd283e10f728. 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/FR2X42437949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb8a73bb75bd1b835c113315f1c5f2c7cd6ac476684747f57fd5d57a68e66b9b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR10S2483599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6fc78e64da91ac83853a2ebfc74c5e8668cd423a42dcf0df1dd66a6dec25c56. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/TWDL72308451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9afe1c661018e0c4f41b34733de6b99cc468364922ae677dda75c8460283df77. 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/TWDL72308415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa63fcf6c95f3ad75bd81fa91613aee124e6bfc421e8b1009921c646764bfa16. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DGA0L2324658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5243e303fb822bf48e799790fd5ac8083cf65693ee6fa69fcacc348967d5cc0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DGA052352234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94861a631612528d0b30de73ed5e7bc61b0f606d3ccdbd0d2dc488a4a99e3212. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DGA052352235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e4341f6e19456fdedd8bbc4d8df6ee8109a043f0871f30752e5bae3e82ff6f5. 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/DGA052371294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fcda5a600c49eba98b45a849773a5fca413a3bc5dfb902ae5f3bc327844b913. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DGA0H2316148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac6ba49683678c5829c31b3247101a1f1f1d10204a7f547cc6f81a366c78c06. 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/HKG731672455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5232123470e018c4dc567d5810b7ea0aadb4ef5f2040620a2e43d8e9590aa9d. 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/TWDL72306668.
洛南·仓颉颂 (洛南县仓颉文化推广宣传曲)
洛南·仓颉颂 - 洛南县仓颉文化推广宣传曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x498dca23d714807a74bb781aa8516890db6c449aab02ea2d3101b70a3ea9d8b7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRX452309318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b7c0f709dfd5f4b7b6b9218ef5cf8b0caa8fc7aded3bc2d6147bd11d1470aff. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR2X42377544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x428113c9dfba7d380baffbd1e4cc939d949edd532ef6276009d8e9b2a38976b7. 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/HKD012209148.
霸王阙 (手游《少年三国志》武将项羽推广曲)
霸王阙 - 手游《少年三国志》武将项羽推广曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa150b1fee994dd3676c40590490331e67c169a9959175f9cfa40276dafcbba36. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DGA072238107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30e119ab84dd51b8e62b18aaa9fbcea1e6653f4a62e5f09c6b5a864cac11ee6d. 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/QZZ972331900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe4071c2ab55179a8b69338bbb15bf01c9dc4ac5dbcc0801f0d551ae88e2ea0a. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/HKG732273785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdda9ddc1eb97e149d6b69d8666ffc1f88874beb8a28bd4504655e26537c88067. 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/CNZ632200132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c592e66d50dcbdd76afdf8ab0cb5e68b71e62d41922887dfa460879df1d702f. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/HKG732203413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc411d61ff8cfa103aa1ee6b7dfe70cd26d6836a03bede1d4fb5fad54b341e1b0. 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/HKG732122684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3353d413f2a5a9a6fbe4187ce1bb23519292c20f99f0f7cd752ba0578bdfc314. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DGA052056540.