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 0x84029ab2d0832b96320694fca04b99c2324d04363c59588afb1ea479c9fb6dd8. 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/1e0773da-ff10-4bd4-b24d-40ecc063f2de.json and https://artists.proofprofile.net/proofs/artist/1e0773da-ff10-4bd4-b24d-40ecc063f2de.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 0x49d81fcac7947b71461880edf8dd4b05ee0c2a97088b18004b0e616dcb055ffc. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/CNA260332201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91963d6e2764a19a71a5d054f321a8d8753fe1cc93013fdbf53180cccb321364. 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/CNA260332202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9693ebaa16b4ab0a371af987b67a48b1e8c12212938c386e1d5b5e9ab6559d20. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/CNA260332206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd63872699d4ce546ef38af3a1506c555a0b7e476bc5eb92ce71720fa9bb735d8. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/CNA231302401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe92b011a6b3e7abef6c53f1a07f8bcb845f13fa4528aa5d1fee375138dcbbd39. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/CNA231302402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f6e3326de1419f804223a1ed5303ee9f0301610601607e4fa87636022c021a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CNA231302400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f6e3326de1419f804223a1ed5303ee9f0301610601607e4fa87636022c021a. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/CNA231302400.
成人之美二手玫瑰18周年沈阳跨年演唱会
成人之美二手玫瑰18周年沈阳跨年演唱会 (Live)
瘋狂的外星人 (電影《瘋狂的外星人》賀歲單曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a57f86773bb21a6270a13b1233d3b5527bc6f23991b4b7d82221e6ccf426db8. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/CNZ511900081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60962a5aa5ef584ecc9b6f704b7ca1b0ad33191ab38de6f6175bfdd90cee6956. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T21:10:13Z), 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/HKC371687976.
小城夏天 (《梦幻西游》手游须弥海门派曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5acbf75da56d3f47abb832db078f22fc779198de96dac69aa396494fbbf2d3e. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/DGA072109828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf39718171861b8aacc5f3f39f06cd5c4fc92d3fee4ce0cd837c14431ceec6a. 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/CNZ852315142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf751dd1e87522be864387e5133de216653cbbf027dcd7745096b97e4facdcdae. 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/CNZ632401078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c77ed8a7fe2257ca6c230d3f085358e53cb1010ee72c82f0ef96b62830a4f7. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/CNUM72400392.