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 0x416ba5c42be9efded5b68b71ce459ef9202c31b0910b48de3422a742c9c1115b. Chain 2 (Bitcoin): anchored in block 953610 (2026-06-14T07:58:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1390f5b8-246e-4946-8ad9-c73b24606163.json and https://artists.proofprofile.net/proofs/artist/1390f5b8-246e-4946-8ad9-c73b24606163.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 0x81affe2bb6705a3c6450ccef201409e5889661433294dda517166342411584ad. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/HKD252300099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f9b2f49dbf6a9ff4b00ac5224801ea1b0dbf7c0869a90f07224aafde95d906c. 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/HKD252300100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec8d8ab8bcb3fc449937cb9d365f0df5ce154981195fa23ec7dc21768a1f2c6c. 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/HKD252300101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5f8d5e75214cb4d66b3f5b4a56b7c4e511f4e3896ed033d4ef2ba0dd7a13979. 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/HKD252300103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca2e6cf647c494789d5e76b935ccafa806207ef9b36d9b1032bcbbce7e756074. 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/HKD252300104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a98ed9b3a7a98d344affee8b1597db304880dcb644de4a77552e0aaca51d930. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:49:42Z), 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/HKD252300102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c9742490cc046bc80e7ad7b670925b85115749682d85815ec184b87973dc4c. 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/HKD252000040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5485956845138d0503367022f8cd24f704633e1b5feb408adac2fb941990b24. 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/HKD252000037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a2650c9865f8cbe158555d326149e7cd5cd21d6f303b7819f9859c4a178e98. 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/HKD252000038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2cb8290bbc75bb22a493ca4730783480ccb56be5b72beee8d8488da23bcca31. 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/HKD252000034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe14c361b69b4ffaa995bc211d1eedd12dcc6bad33240fd00a085e6669eeff34c. 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/HKD252000039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9dca605fe28804ec9b47d5a1aaed07cff7083096c7c8a7bb01ed7c32756d7cf. 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/HKD252000035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81affe2bb6705a3c6450ccef201409e5889661433294dda517166342411584ad. 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/HKD252300099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0939f6baaab336713ba5e4149b9fee0609e279fedc199e74934063173d98ccbf. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/HKD252200042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f686ccba76fec2c2dd6061796d60ad10b535f0b5be5b6c49be2442c6670b7e. 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/HKD252100126.
The Way You Make Me Feel (《今晚唱飲歌2》version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a5d1a9f7f4242b00c5c4277a1debd188e1a2cc9fd73c29092f43a4f49b8ebe3. 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/HKD252100071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad04cd4e1d70e3367939867fad1d7c269b619db3f13688de44defa17caed55f. 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/HKD252100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c9742490cc046bc80e7ad7b670925b85115749682d85815ec184b87973dc4c. 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/HKD252000040.