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 0xe8ab4349e022b1fb653bc8ad88b20d9b91ca30eeee1a264c22776de315d29613. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0785dee4-a172-4ec9-87f2-0d18f6cafd7d.json and https://artists.proofprofile.net/proofs/artist/0785dee4-a172-4ec9-87f2-0d18f6cafd7d.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 0xdf63481005ca2f3f0a521d58d6fdbe370e6a28cbbd197b6b3b1f59306ed01705. 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/DGA0H2454766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd074e0484c6b5a6e1f966d41f7a211b43cd53c2c5ed96b00ee3956885c56c42b. 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/FRX872403914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67fa3567d6a34d61bfd3db900fb7288b56cba78304ce6403a5d11b81203f6d71. 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/FR59R2451187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2007045daef490eec23c3c21ede4f0b8e3ae92649728e4809f8dbbbd46a9787f. 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/DGA0H2333970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe715aa8917e8e2f0226f4130902fb9796cde5d4a1063c8727fc1ecf1849267d3. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/HKC992324962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x465ed9624041e3c35d9f52e9ea3a78f51b4d6ba028f087b0df92da6eb30c04fa. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CNZ632300148.
兩個世界 (影視劇《下一站你的世界》主題曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57961691970b58eda520e9311b88176479cad130fb91a235878bc73e1efda8c9. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/TWU712300467.
失衡 (影視劇《下一站你的世界》片尾曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d7afcc27dea44aaec6bf343224c09d9887977690be9dbc8d3b9b1edeb7d2ac6. 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/TWU712300468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb91d623ebc80c8f1ad76c3e80b214d078a098aba58ef9d8194aeab900270e79. 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/HKG732104052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9acaa65465c5f9bafbd3e71ab62c52de575d56cbc1751cc2b9a8dc8cbaeed43b. 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/HKG732104047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c866fd9bf20675b838a6e1f33c04cb3d524ef87791e04ed52af95d4c580139. 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/HKG732102872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38aaeb3d4b9c09ca982fff558c819f8d29ec89f5708664d7c5208c051a6f559c. 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/HKG732102466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a026c39a81bdc9b3f36991f2523d73b1e64a67fd04a1448187c7b492727f3dd. 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/HKG732105731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9181acf2e0ce939159e40d12467867a123521506bd044b9098fb9d44831cd555. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/HKG732103130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3355cf2de048bc13a15e99eb09e035b9eff2e9cb145ade079b46c08ee0edbdcf. 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/HKG732102863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb363e0d99dea80dd352312a9a87e4ae39693e8bd33613264acb045de015dcc0e. 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/HKG732102656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534fb177f8c3ab26139f9788deddb0ce24cf6d74e629aaf33696145936568018. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DGA092357441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d1f0506bf8da6189f37bb174ec731710c5e2be7682ed48ba4c7a140cdccef84. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:05:16Z), 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/HKG732105032.
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 0x6c48dec4737bae99cf1fc3e39f5ada5bda90282945321cf23c49b83c765e92d9. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/HKG732105025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee121222026575d66c839bcd79fdb447fb60093ca220b5494c24f60a77beb369. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/HKG732102464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x654a7235b312102878508de6fcf8e001df0de6a13fa3c4140da6a03f16edc0da. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/HKG732102502.