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 0x36e60254c716a5d7e6c6b613a2ecef90631056d31eca4385c69101adf9c3c4ee. 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/82124514-7d0a-45de-9f6a-70aa54879593.json and https://artists.proofprofile.net/proofs/artist/82124514-7d0a-45de-9f6a-70aa54879593.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 0xc3e4cc13e2e90f295671d53c4957679010e409ec9edccf84cc0bb94c294b7320. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/HKG732313950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x387a3c871bf796eaa14d382cda3b29b14de33cbb554e734b70c48b1c019df305. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/CNUM72400428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d0e6191acd49b7e201746ad6e1305049c20b9de91f3889cdc098b20094eeacb. 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/CNUM72400416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c846e6ae5668079a46de01432c628465f5238157906e262f0b0ba2b5ea9e1f5. 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/CNUM72400429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf024cf5da47eaa2f8e40a50d243ea4c8d785e9f29bcbb90054836812eff98494. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/CNUM72400430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16a3bde3735677b184bb8731d72de954db8e27a28210cd0bbc1d92e1578cb43. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/CNUM72400431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09e6a8e54f687f504274379ccb2da4473314c746ecf57757f68c18032ca0f201. 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/CNUM72400433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf91e52065e11b4dae9fa421ea543267e084cc2fbb9862bf1a45800bac3b09161. 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/CNUM72400434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf743dae2255cefe8d173f4fdc5a177d1536a50fe0921f2468b447318e2888a. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/CNUM72400435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc36caddba8959dfae705567e81e2f342556aa2d2624ee97add1acbc7ccfd79dc. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/CNUM72400438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e19520252ac2d3fc7167949c1fe5f84f8d2512703a1d15479b111ecde9b3e8f. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/CNUM72400439.
我和我的“野”朋友 小紅花音樂會特輯
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71b9cf9253615c2e82df20d56fc18a40dd7adf209942da2823f9e30eba9a28c1. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/HKG732224424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2be6bc70f65762f9d2c8058d2293d0dd4b6250c66d2acd25128b75e2322c96a. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DGA072340856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150b793f5e1c66f9a2519e683b5f7bb86d1d7b11bd0cfeb271ac9a1c2c9a9700. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/HKG732375476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82ff62ef71e7f7a6b61370754e86c4418ffc23a57aaa437db1e6a16a9c928d90. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/HKG732296645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb97db2d95070014600027e808ba8128603eae291f24b14f5733c2fa9870a4e4. 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/HKG732245695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22c71040e5d291972209109c48386d07db531ce26c63e68d895f039523c2c5e2. 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/HKG731534799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x625923674688b966de20fc3dbb97704ea542a52c025bacc16f8f3b319cce161e. 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/QNSM12401567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62aa2440dae6505ecc05a5092b0797d84da3975946d241a809eec50cae8c4ec3. 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/QNSM12404024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835da9b125272016e17140469e06ca92d5ee79a7bb07c20e7a2159b14de05fe2. 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/HKG732429936.