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 0xa837cd00f32cb36478cf59e1a9fc979175cd1302217821a694be4410d9d58ade. 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/ee1bc401-a003-43cc-8788-0edfa31d703d.json and https://artists.proofprofile.net/proofs/artist/ee1bc401-a003-43cc-8788-0edfa31d703d.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 0xab9ee998d2b25bd5baac0fb087a72611d17b1819fdc58efaeed8286a13e5856a. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/FR2X41617261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d91ea6d11a54d5f4767d27c109c46a0ff8ffd679ad9ef92bc849347cf30e01e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR10S1656298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2ae7ca5722e7840e5a713dff9f83b1f7044b69bc14eaa5d72d3b9628ecc77dc. 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/FR2X41617264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x409b7d4d44ca1712f85088d090e2ae3de93ea8180fd0d06d2862a117f8f13bc7. 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/SGA081000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5926b2ee230145f3cee5d1c1431919360390d3dc306a1eb00f6df81b3319359e. 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/SGA081000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07f97b362cb76243abc56a4ae63875bfec57962055a980b6d41f371bfad37301. 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/DGA0M2331244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94729fbed91d8af15a60a2eda235e64cc6f7fb0f945c2a796abe18ec2cf43a91. 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/FR96X2362976.
断舍离 (新传媒电视剧《整你的人生》主题曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb2fcedab1412abb94039fbb4272b7d2b85b5e9108c6924e04063138589c727a. 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/SGA052300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81292c78d199a7990e7f51edc122ec50559633e5f0cc5b374828b9e0bafaa851. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-17T00:23:13Z), 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/FRX282182191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a60c9f056150da0cfe516b8eb5b0580962f9225fea3f7b4eac30844243702a2. 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/FRS182036400.
是愛呀, 哈利 (網絡劇 "親愛的九月" 主題曲)
是愛呀, 哈利 - 網絡劇 "親愛的九月" 主題曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67861edba86390ead1958ed91459842013ad8375366af0882886161c94e5530b. 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/FRX201710556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a7f668a03a2ce8880b20f3f3ae7aec893df7f0fb9c061a18468e8043ad783da. 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/FR10S1752825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e31c3b920ebd7494446a4c2e8b2fc9ec8fee651ead94a61d4c5030549209b9b. 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/FR10S1752836.
有空記得約我 (電視電影《雜貨店》主題曲)
有空記得約我 - 電視電影《雜貨店》主題曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b80da780445f3f42ffb76e27d6e681d578c805e14d5033bc81339b94c3c7ee. 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/FR59R1632930.
放不下的活著 (電視劇《復仇女王》插曲)
放不下的活著 - 電視劇《復仇女王》插曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d91ea6d11a54d5f4767d27c109c46a0ff8ffd679ad9ef92bc849347cf30e01e. 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/FR10S1656298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde05648c835c9a7e8513564b2d91794b655bd85337cea8ca326562376429bd25. 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/SGA052100059.