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 0xceebffe042f1d22438effe482fdf519beee66ed03b888bfd56063269d75dce31. 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/6ac7a73a-bb69-4218-8d09-4517b832ebfd.json and https://artists.proofprofile.net/proofs/artist/6ac7a73a-bb69-4218-8d09-4517b832ebfd.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 0xe8fe3d6084cd69baa60de80e3fe2b120e52f0ec4cf518a84c96cb3581705630a. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/TCAEU2032385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe07428a459dc22f5a0679337383b6ff4498b7150986185f56bd739873255415. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/TCAEU2032388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f656e7e3aee49438a5a7726fdc33b06aad2e2f7b64862a9933cb52491bec27. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/TCAES2036425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9eeb10e3b6dfe297ae31d414af1c0032c7cdc39b014945f9b4f528c8c1cf5fc. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/TCAEU2032418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c0573516cf7edf5e655f7d6194487185a3f86d280c75510931d1448c9350b22. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/FRX762188515.
怨嗟嘆 - 滾石40 滾石撞樂隊 40團拚經典 (原唱:伍佰&China Blue)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac9170085999265aab068c60acc2260cfd5b548b7bb073ec88c85aef0d2a3645. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TWA452200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd208ac9d68f1b0d0576f38de21da3ef50ddfc20049be0b5e9130c274a4939d68. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/TCAHB2371222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671c72f92b3c93eadc4d3c52fccc391e7e0ba3aa1101f09a94ff18f4b6837362. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/TCAHE2339016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2830c93dd76ed0ef9e3c4a5ac5d474569b2172370bd9b0ea19d21c13de48982. 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/GBLFP2424187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae65a5b73036233aac3bf917356eb419835cd279c78ac62dc4dc6c1b415568e4. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GBLFP2424183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee5c258752fe9af7ea8587e37e52f95425b2626acd6bc54ee0cbf03c469639a. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/GBLFP2424181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7673b04996a0b8616eca4be88d9b2f857a649011f8e372839fa5ee4936398bd. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TWCC32500927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c22ad0b5803058c26b156edda49608071c76b7c1dded2274488ee0aa114133. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/UKXN22502377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54ec60d636e029cf44c5f2362f03fd034c8f6459a93407753427adb924f77b72. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QM99V2409502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac1b4d5201e982ac5e507db37c80aa55f676de0a87695058c1526bc9aea8f09a. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/QM99V2409503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5549efebb5a96e6bf93b31dcea924a481df652e714f453a1fe8a032ef63317f1. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/QM99V2409505.
Notes Underground 地下日記 - Mong Tong Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d9ec6e1ba1d47c3a148c289f0140b06545626c520efb63126a07072477aa63. 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/QM3862111002.