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 0x35574b51715ed73834a393a93e4fb278382ffa45431e6d36de9407961057edd2. 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/ef33c6a3-8fec-4df3-a7f2-ba79e9c8c1b9.json and https://artists.proofprofile.net/proofs/artist/ef33c6a3-8fec-4df3-a7f2-ba79e9c8c1b9.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 0x1951382af05a333fe193c99c7aeb13edc3aa11cf0fc6e36b6d36efe6b4781697. 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/CNG130831602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e360b3ebaf07cf049cacc66312edafb32e47b58c36f4e3bb1d3a4ac1ceadc5f. 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/CNG130831608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26dd69d5be0a4e0be5bd42ad16aba4e868ff8c9f8e3a7278b8499c9f0e105f98. 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/TWU711501432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x576db5aa6ba5558e1eafbffab323daee35357acde33d5b4710a61dffa07bee20. 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/HKG732411538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3be03007b1f58d7379a1e1cc188d1af2b2026af9d54c677cdb7e8337734dfc5a. 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/TWK241306301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91aeaebd5cb09bb860f0edef83449e424533b7ebe4db7d3312c48dce5ae10b36. 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/TWK241306302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac15602ebe7c288843850c8f6d70a94a7ec7bcb93dd09dd8ab33713b0dac8e28. 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/TWK231406501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x954984f21be4c06c12663dc4b2181efcf497f41a5f8fa37841772b536774d115. 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/TWK231406503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa10b01b6b934df00a1e432599a6b954cee05d6045a354dc65d664aee4101465f. 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/TWK231406504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6471000655845eb5309b85fc7b89b162bc6136c433520dd61e6d8861b7f2a25e. 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/TWK231406512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9afd40ac055ea7e884d71c3c502956640732901e74c60f3b877dfdf236730ca5. 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/TWK231406515.
繁花 The Original Music & Soundtrack of Blossoms Shanghai
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f94295386e98956691be19257642be3e88820a5b7b9064eb75664a80adbb06. 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/HKUM72400079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e2012eccd36ba9da0297e9eddeb4a6a4fb3db1fc62571810ec7111b0746e53. 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/HKUM72400094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cd090600ea65d1eac255fb86f7ce38281de8ac6ccaca090a262e12b76727d92. 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/HKUM72400087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa59c984b3b02d6f2241a0a7d48de250e7d897e9428bb409f649c367ec81d1b6. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/HKUM72400243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c044e262507b2b6e131dcf8af34957d6a56dfc0977e364532dc994ef36dd19. 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/HKUM72400081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6572ae2a0136a315061508f6081a3b8088f738e2feb209c702f31393fc9e54d. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T16:21:14Z), 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/HKUM72400082.
Sorekara Epilogue I – Kokohaku - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdcdf10b7ba994f766ac8e39e0083a72ae531ae0490cb4deaae461d8d72160e6. 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/HKUM71400143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b6c997864bc5ca99f90834548b843d0d569b145b16f62803af41369c48264bc. 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/HKUM72400245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7254ee946eec8f27226e1cca027bfac81c31214cec305ace5c3b0a70e50f027. 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/HKUM72400246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe15b2d3d46712d9a18e46dc049199214218f2cd17d063dca5a4ae6effc0cbca8. 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/HKJ962011701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb021fa33bab911375f524f3e9ad362b0399b768a41f27fb14f77f6d25f83f4e4. 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/HKG732276420.
好久不見 (劇集《繁花》開播一周年 / 合唱版)
好久不見 - 劇集《繁花》開播一周年 / 合唱版
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54aa7d6c094f40d007afb9922c34c617af4d6d1cbba690009f08e647a18439bd. 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/HKUM72400628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x735ab3f2fe438209029f4daf911193e0732c1d5f40e1c83444527bc8b14c5db4. 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/HKUM72400638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc69ee8b2a4052184226dcf640187ddba6d09247630348d002deb7011fbc3e777. 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/HKUM72400535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26dd69d5be0a4e0be5bd42ad16aba4e868ff8c9f8e3a7278b8499c9f0e105f98. 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/TWU711501432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa19e7d4e9f59ccdcad94572bec6007e0670ee6c8c28e1fd69344e30a7a0f8369. 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/TWU711501569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7130e296d8bd07bbd455cc99a3e0ac3083d6757cf1f1191424f1cc73072dee15. 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/TWU711501570.