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 0x435904c71e2ce70a8ae6e9631a1897bbd74b34a044d6278d88157dd9521feb1e. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dc771fe4-85da-4fe8-83fc-30ef73d41b36.json and https://artists.proofprofile.net/proofs/artist/dc771fe4-85da-4fe8-83fc-30ef73d41b36.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 0x41af98f2e9fd066372805cf7c678099dd909eea6cb7cb4b23ef43399904aa639. 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/TWQ931600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x809a3fcca0a928ef54d4e6ec0d0bd221812c71799cdf33412677b230e6ef0ab2. 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/TWQ931400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe852fe2d6e9e2a9d702817d05e26072876a5b260fad58826586e7aced8b6f6d5. 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/TWQ931300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4232233f8ecb34174fb3c5c9fbe81fbe6cf929fdee4e5c5c708d7ff332c9c3f. 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/TWQ931300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31377344d9d128c248671388b7e78194c88a45ebc34a4c7a0999edc013840dd4. 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/TWQ931300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e2dc76cafa8c487b6c6f4179411ff23f12865283f0ac104758a2dba41d83b97. 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/TWQ931300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f98690dda8da65d1927ee967057af92faf007ceed81f60038e2f73801fd3352. 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/TWQ931300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19704bd63acdef8bc7406e28c764b7120a4c1f0adc799ec886a210b00df1004d. 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/TWQ931300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b571e845deed60ec649d7ca6c0d32bf231d8757550e1f89d68c66136b45d37f. 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/TWQ931000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a1d1b87e3db676521bcb118dc125db1f8a1977ddc93ccb925c0d6427431e6b. 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/TWQ931200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46accbcc504bcdb84eb7004a47ca69999b6c7b9c83d15cf01475a408147f2c7b. 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/TWQ931200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbfd94829d1deb23a8f0afb02ddfdaf778ed0990ba9272f32f53cef0ab783a4d. 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/TWQ931200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b571e845deed60ec649d7ca6c0d32bf231d8757550e1f89d68c66136b45d37f. 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/TWQ931000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc2d123ab4ffcd5aed7ad4c6aa565130fed39ac9a0e50a2af7e516e3dff326ba. 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/TWQ931000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd2815483047434b7e26ce23173d0e9c0bc469380d22ec1f5d1446758b826d25. 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/TWQ931000009.
別在傷口灑鹽 (《親親壞姊妹》電影主題曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d0cafe9f9bd16e048765978867f81073e17ee7c5f1fde4349198cc15b9963e. 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/TWQ932000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f5839af3e73ed1fbfe16d3fc8cbc10f841f134368e68c0ae4dd732ea45942dd. 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/TWQ931800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb128fdd90494e877b3a9268ffc6e6895ef2841602c9d4051c31b64d5befe51cb. 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/TWQ931700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda9c64e161f61865e3aab32210cb069d9fc0a7b0ffa79eedbcc887fac74a4b1. 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/TWQ931900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x860d9b107228311232dcf6918d96e68c6241f98197ceb99d63ccc8d92d3c91c6. 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/TWU712404667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa089ae186dcae35d401c732977402f6e18c6f4b8081ed89cdad6d47108863a26. 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/TWQ931000006.