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 0x82ee77304333bf41b994dace79d325452c9a284a9c83e405408941c286007611. 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/99be8108-444f-4ab1-97b0-01c2c5d1f1b1.json and https://artists.proofprofile.net/proofs/artist/99be8108-444f-4ab1-97b0-01c2c5d1f1b1.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 0x7080b413088edbd60eb7533675d2aca7cb86717128a1119ca6b358a63665afce. 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/HKA411700070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4d929bf3851e17557a81bde876e41b82d8b177f7a828d67df95440881793f8f. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T16:46:31Z), 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/HKA412000247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dae0142fcb8ab5529afb5c5d38961cae00a778cccaba9a5706934c32ef0a965. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/HKA412000282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf13f321e964045566f64b10ea4cdb671ee0e048393deba0b6ec49d2b2b3a5763. 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/HKA412100077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5373df68c55ec3c2e68e14c12f03a8eb90a9f3ba357c7489d362b2ef39d50436. 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/HKA412100126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64bae3c25e1031a7e4f9eda2184ef702f4582361684cb3f353f1e6cc1f9b4d38. 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/HKA412100051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02f032f84a2235b17c050c29663575666121567f3b59d4a78e4278430d583b07. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/HKA411900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1213d2c3bdef6a27a3f97a57c2bd3a5a9c2813eefb9e2429e913976b9c238e3a. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/HKA411900063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4d929bf3851e17557a81bde876e41b82d8b177f7a828d67df95440881793f8f. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/HKA412000247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf13f321e964045566f64b10ea4cdb671ee0e048393deba0b6ec49d2b2b3a5763. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/HKA412100077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dae0142fcb8ab5529afb5c5d38961cae00a778cccaba9a5706934c32ef0a965. 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/HKA412000282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd14d601387d6607aa75212c621fabb12dbcde0acb32acb27c738ae6583faf2ae. 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/HKA412200048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b7fb25cb06c67a1ddabb785f3ac5942a13269ab8c1a778d5f0b409695410ee6. 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/HKA412200140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbda0f472af9f83dd6c917af2f52236c8b3173397e317a49bff92f16d146ec5a. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/HKA412300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d1b5b9a41bf6ad77978d17ec687927b1edac16a04f3c81b00929888bcc8696. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/HKA412300206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbda0f472af9f83dd6c917af2f52236c8b3173397e317a49bff92f16d146ec5a. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/HKA412300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d1b5b9a41bf6ad77978d17ec687927b1edac16a04f3c81b00929888bcc8696. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/HKA412300206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1471128209bb5e862004b7234d27672ee2b56ce42d037225802da1dc180e8c82. 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/HKA412400387.
相伴 (守護版) [《一束光：高錕的記憶》音樂劇]
神把眼淚都留給了人 - Never Too Late, My Path, Mi Way Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c45ff261542b7fb251e46d55a791c78fcd07047ea81aaf48b2c695236b30d6c. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/HKA412100155.
浸浴 - Never Too Late, My Path, Mi Way Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb409886df740a948e3eb11e7eb9a5bf0c5e935a52deac9d688f402acdbafbda3. 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/HKA412100156.
殘渣 - Never Too Late, My Path, Mi Way Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2856216fb0d7b0e47e9d08344220c382836ff1e00e9cb1a8b085ef1e97cc2bff. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/HKA412100215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe89ab9aaf40b4d58cd7279d11203d5636d811762ba677c5c5bb03eaac1af44ed. 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/HKA412400083.
盡頭重遇你 - 《為你鍾情》音樂劇主題曲
盡頭重遇你 (《為你鍾情》音樂劇主題曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d11a4384fce4aeb9c6c724489803157e326b131fcb80a1bb1368f49d270ff4a. 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/HKA412400164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e69b580e5ade0297923a975adcf5805fdc056b6379df58e7d2c3344b806b5ab. 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/HKD252200095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1471128209bb5e862004b7234d27672ee2b56ce42d037225802da1dc180e8c82. 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/HKA412400387.