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 0x014b5f066ec3e02af62c1e7ac15eb2a79f98a673018184122d67ffb0959bf514. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3c62f256-46f0-4975-88e4-ffdeeec44432.json and https://artists.proofprofile.net/proofs/artist/3c62f256-46f0-4975-88e4-ffdeeec44432.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Embrace 擁抱北歐 – 媽媽寶寶的幸福時光系列
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 0x4955599b5c54477e6db84251361e38f7fb04dd985ba6037b1daef961dd599bd5. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TWC012310011.
童年回聲 - 媽媽寶寶的幸福時光系列
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa43e0343240806e3495f6f4a225e9d8fb7e36fbe408a85f97d72bb7aa89c6b. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TWC012411361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa50253c3511fe9acc200b613304aee64dee196b9d9ffa08794b454e3a4437fac. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TWC012411381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c283a5d95d06788e72e59f2db2c9545198d883a7bf736addb45e9d34ea8a7b. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/TWC012411391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd826bb1c539ab77b98de57dbd0d60fd8f870423074e4e4bdda9e928e76e9ee91. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/TWC012411401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a66ffed16c2d73db1a4f3a341e309523526ea56b1b7271f5a87bc6ed9be35d2. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TWC012411411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5836301f5531360a42ebd7d01969775a46a2db7242c3bf76400b0762ebb83045. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TWC012411421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d1edb354dd8219f315eb2682d5a1fb3fce65381e8781e33388f4b3eb542d0ee. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/TWC012411441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44d3742a0461ae1dcb9ca2454014fa2c57aa8e9550c5b78fc17f15085145902b. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TWC012411451.