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 0xf394518106675b9143d026cc5e90df70758bcf13eb45504042ffe7c8df771e61. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c97a5a6f-68e4-4867-b9b3-039192325d61.json and https://artists.proofprofile.net/proofs/artist/c97a5a6f-68e4-4867-b9b3-039192325d61.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 0x4057683d764e28843dd9037ced85665428974343e1d5d2ae170f20c585a3975f. 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/TWK232383510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcc84acd8806cc871cf5f00f2dade9b8fbffed5e43cb835f9f9832eb22ace879. 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/TWK232304201.
長成什麼樣子算愛情 (《華燈初上》插曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf4ff50bee96b5472b5292fa52398c1dac306a7efd1d54b4f3a15c969f53a7a. 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/TWK232183150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa967d4d927c2a7eda92bdc88eeda25c3865da74de46a1a1ce6706d7baa931a1e. 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/TWK232304205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12cc7b236803291a7014bfcf314f04c22ebdb969e75837902182871caae2da25. 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/TWAL31800110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c7fde1fa9a133ff0609d211df727b1f6d8fd9934284d5c03d233325ad3dfaf1. 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/TWK232304001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f29fda93b6d37aae1e64cc43fb42001878cde4664626ca0841b49baf456850e. 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/TWK232304002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d97c8a27de7a5d8fda2d60fc91b0c483c1677e9ff42b99329867138beeff2ea. 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/TWK232304003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x502aa21fb5276e51889fb3cd9bf37eb656720c62cb6ae9faf849ee0b39e935a4. 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/TWK232304004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x541ffeef133836d90ecfaf6084a0b4c5a33352b65fc09bdf2200d1bb181e9062. 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/TWK232304005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e6a1d3f8bff123067b23427d8b0f92f4461e468fc6e8987307c73c38b41e75e. 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/TWK232304006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef84dcbd72d5f764c06a56c074898dbb48a9c1e6232d458d2e4f76abe6914c7. 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/TWK232304007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b1168eff22905b80fe08c3424da455542f6ae1de3e06128f1f714d56de181c6. 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/TWK232304008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2448144d14c5024950576e058211245754e9a600774877350f15172a6a309cd. 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/TWK232304009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf194891575c68974f22d48ed362e9882c7ee13eadb70811b2fceddf19ee8e699. 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/TWK232304010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef32c5e69369d61bbeac958f66ced4cec4c1c36268d9a5df9e62d1bfbe78a4dc. 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/TWUM71900041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a417ef1ee4de73f7a618a33442cf58a8925884a3ee759b7f5a25435994ec7d5. 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/TWHB12205001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x983b9dcee3649d4c6f73886f72de639ea6e516bd05db858c738a335d3a67f3a5. 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/TWD952301106.