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 0xa83aad3e4a86dfd38805ea826930b09bdd803b019f1e4bce2a5224735153cf72. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9e3680ff-414c-4eba-91ea-db3776aee97d.json and https://artists.proofprofile.net/proofs/artist/9e3680ff-414c-4eba-91ea-db3776aee97d.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 0xf42abb208d743848935618946df61bb0a716179aa7368857f1a171018a0147d0. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/TWCC31702053.
幸福的寄望 (民視八點檔《多情城市》片頭曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd582692206131639974d7996999a333f17a1528512326831648f8251ae3c47de. 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/TWT952000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7901c844d94597da711fb07ff7aaf7a2ae25803e03b15d1e9202d9dccb2216a0. 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/TWT952000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f91b9d3158f04c178d1bac3aa396f17ebf15ded03a53aa065e20ab0b196800. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/TWT952000014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa36e61dfc0d56f4fa432f7192c6c158d5be1d627a2916fbbd4e0b1a7dc68e293. 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/TWT952000020.
不停轉動 (大愛劇場《金門大國銘》主題曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9113639c01493585f0f47fa006d3db13bc867321752c0e693e406305b5c2f7fe. 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/TWA871501608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1fedf17b2d38b992310b4f033a221e3dba48a802f494a576aeb0ae66387c372. 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/TWA871501610.
幸福拼圖 (大愛劇場《最美的相遇》主題曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb9ef85d35542342f7c2517338106583db3827f7dca4f836c9c7655a94b58cb. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/TWCC31701379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11a691490cba5eae7aab29cfb2a4b463b2d22f7909e2a80186a313937ef75bd. 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/TWCC31700105.
別讓愛情沈睡了（優酷網路劇《鮮肉老師》插曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14c8ab4bb1e8a65fc12b8a1ec969d38c0c89c148ef458fcf45cbe15b901f78de. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/TWCC31700033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x692d4fd9187a5de64416086c790e752822f5e02d52f10a3509bcf46f4e47a99d. 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/TWCG31600001.
這是我說的 (電視劇《谷風少年》片尾曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03bf89195818645827c20613375cca07f62df4553f75fd90aaab13dd718f644. 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/TWCC31700163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cf70c947fb61896dd31ad859e92f687d6ca36a24c4e2e1e359218b73f90146a. 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/TWCC31700164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe711713eb083b41a100c0c06dfe4e406878620a9bc627bdc626bc7a0356ed10e. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/TWCC31700165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2a050cde99b01af9130dede2dec896b31a6478fc89f6236b4eb2a6acb9cc6d0. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/TWCC31700166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b59dbdadf9d202149a221110e04788ba611054e398a26dc8c88a8d1f9b5840e. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/TWCC31700063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a82ca13fd98166b9c380b4263b01c9fa79f131baefb6bf9325ce258d1350831. 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/TWCC31700064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x115bb8eb472fe09a6df161390b8de19c672949f73283c6ff38b7912843d15eae. 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/TWCC31700065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc33b807b8ec739aa7d086085a350ef57c0763dcc84bb2633a4288fa8db213c3. 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/TWU711902580.