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 0x4595679f474586ac1e728f14c032904956d972ac6a9c65c2c3df6b62065f216b. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/31177f52-a28e-47c9-a737-26cb3a657c4a.json and https://artists.proofprofile.net/proofs/artist/31177f52-a28e-47c9-a737-26cb3a657c4a.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 0xcd9d68c7c865b145d2d776fa8fa3ad1a73d9c4e922be5be9fab51150a25e1c11. 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/HKD040000324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd1651bb6fc56e16f942da37fe81f31089badde8d6fa7ce17e5c07fdc7a9f79. 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/HKD040000333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e660c6479040a0f06fd28188c7285b45d3daefb35ff381d350628bdf0deb5bd. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/HKD040000309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd67629364dfad56cd8bd384694aff9640af06892eb6c9856f711219b70a64e. 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/HKD040000308.
願妳知我心 - 電視劇: 絕代雙驕 主題曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bbced061d5893a8cc767851fda8687aa1b10a707796101e0c6c70a58ccd53b4. 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/HKE051400025.
新紮師兄 (電視劇 "新紮師兄續集" 主題曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd78ea1d0558568e617e74f22ef92db7d77c9fab317d903c9a8e748e9b362677. 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/HKE058602101.
孤獨不再怕 (電視劇 "新紮師兄續集" 插曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe568cc96efa42ae8761c8cbaefbb425848b44b32045b55c5481653c4a574f7b3. 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/HKE058602106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d5223f6e933fe24a479d2c7d1139bc696863b837d126d020a4d8aed11e78f9b. 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/HKE050800033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8126fa92a741b5d0d23946b4b31f2f2fd7532b3f65ad8d71ab3bd0b2eaa080c1. 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/HKE058611101.
有愛錯無放過 - 電影"行運超人"宣傳曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe5f28cafa3f8b7e34cc9d0fba9a3aebae6e89edbc98c24ffb2aa87b1555e0b. 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/TWA750201011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd78ea1d0558568e617e74f22ef92db7d77c9fab317d903c9a8e748e9b362677. 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/HKE058602101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe568cc96efa42ae8761c8cbaefbb425848b44b32045b55c5481653c4a574f7b3. 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/HKE058602106.
劍伴誰在 - 電視劇: 倚天屠龍記 主題曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dce30fb2ed5308d7ab71ac5d8972800095cd62cfa371c954ff8905ecb6b749d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/HKE050800035.
雄霸天下 (無線電視劇 "大運河" 主題曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed8190e4e53504e8a0518c5cd6f031858431040fae60ab56481a3ef12ee92be9. 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/HKE050800036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bfea1f7cfd83242f0a39b67fbc9c0a78b0407554d4e32f4a97c4f6f00830cbb. 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/HKE051400006.
劍伴誰在 (電視劇 "倚天屠龍記" 主題曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb89b918b795cf28acbb5fc0ec10729fe0878f1a767040cfbff43f004271c9d. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:27:53Z), 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/HKE058702305.
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 0xa9d099294039b6dd035c25004de84c78e5e40e17ec775f2889f1dfb3bc56649e. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/HKE051400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a84bfa6d7c627e2200df804dd03b20cd2db007449873c90c25407897bd754f1. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/HKE051400009.