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 0x15e454c2b23388e3d585b2f528044f68c17f699e8e50ed4cddd7eb6b5049100c. 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/cabde3b7-8a00-4faf-9da1-52f1d24a2802.json and https://artists.proofprofile.net/proofs/artist/cabde3b7-8a00-4faf-9da1-52f1d24a2802.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 0x79cb610ebb847c1c604949b5f9badae4c29ca7b41bcbcfe079bfe9b685c832e6. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:02:34Z), 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/HKUM72100470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7663f9d2a299cbf349cb6ac1503b6dadfdfb6e3f178ca7d14912f48a902ae2f6. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/HKUM72100480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe00c5af6ebc78e6540ea3df723f2afa4ebee4ed6102bf364e4cf737562e089c6. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/HKUM72200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae288028aec33f44f21ff9a1ad35fa0910c1ce63fb43e1ad391d149ee4676b56. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/HKUM72200156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27585161ba8453bbf6df333d52ecfec6a712bc68612817dcfb96c87ff3f5791b. 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/HKUM72000314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7281364132cc6a0d6c8dd81dbf07ce6d992d7e3e7aed886480e715f0abb82ad. 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/HKUM72100226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe00c5af6ebc78e6540ea3df723f2afa4ebee4ed6102bf364e4cf737562e089c6. 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/HKUM72200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae288028aec33f44f21ff9a1ad35fa0910c1ce63fb43e1ad391d149ee4676b56. 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/HKUM72200156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x374d90835c95af7e55deeb6506298395bdd3f47be700f423458ba3de146449f9. 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/HKUM72200157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d13fa0aa2102538823bae23f1cde6abb9c9a1fb04b421d130682710959b9a5. 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/HKUM72100370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc86d927243b09f7715f1507c270c3ae78cf76b01d0d802e3d1cd8a95199810f0. 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/HKUM72200160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1691f677f91c7f117a1cc9119721dde08caa134dacb5a6bb3d2c91ab7ce405e. 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/HKUM72200161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27585161ba8453bbf6df333d52ecfec6a712bc68612817dcfb96c87ff3f5791b. 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/HKUM72000314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7281364132cc6a0d6c8dd81dbf07ce6d992d7e3e7aed886480e715f0abb82ad. 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/HKUM72100226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe00c5af6ebc78e6540ea3df723f2afa4ebee4ed6102bf364e4cf737562e089c6. 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/HKUM72200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae288028aec33f44f21ff9a1ad35fa0910c1ce63fb43e1ad391d149ee4676b56. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/HKUM72200156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x374d90835c95af7e55deeb6506298395bdd3f47be700f423458ba3de146449f9. 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/HKUM72200157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d13fa0aa2102538823bae23f1cde6abb9c9a1fb04b421d130682710959b9a5. 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/HKUM72100370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71b09f37802db628dbc8c0a8807163fcee05f8e0d3d4c054f2c1c28e918be1ca. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/HKUM72200159.
手錶 (香港電台回歸微電影《出發2022》單元插曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f8703b4d0145d76569457b8fafd9788a74f700153ffdf435134b40207902d5. 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/HKUM72300220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c6b941b745a7fd4baac40ea339fb190d35209eaff928c995c96d737780d7f3. 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/HKUM72300219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2269d347ba320269c25ccc1a4ccc08843484ed5650ce3fbc4dd32d67330c42b8. 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/HKUM72100085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbaa0188c0db490399dcbca505d793eb9f3805dd4513f0247b39135090b9e046. 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/FR96X2304252.