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 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 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 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 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/HKD252300100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec8d8ab8bcb3fc449937cb9d365f0df5ce154981195fa23ec7dc21768a1f2c6c. 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/HKD252300101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a98ed9b3a7a98d344affee8b1597db304880dcb644de4a77552e0aaca51d930. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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 0xb5f8d5e75214cb4d66b3f5b4a56b7c4e511f4e3896ed033d4ef2ba0dd7a13979. 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/HKD252300103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca2e6cf647c494789d5e76b935ccafa806207ef9b36d9b1032bcbbce7e756074. 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/HKD252300104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9933d476b816b804cf5747bf72c81139d5fde2ce6332a2c2806f036ea9ac8fa6. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/HKD252300105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe49f29ed552dd0b106816b4e3fe7749de807a24f5124ca352f435e5e573a3bd5. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/HKD252300106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c9742490cc046bc80e7ad7b670925b85115749682d85815ec184b87973dc4c. 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/HKD252000040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00ac82143b01a0a8727b0bd9dff847c5e2502abc94ef12f5d1f430a518802468. 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/HKD252000036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81eee20d2322a90554c1e63188aa4d6911d1bf90561c09c168deab4b2171f693. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/HKD252000031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5485956845138d0503367022f8cd24f704633e1b5feb408adac2fb941990b24. 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/HKD252000037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a2650c9865f8cbe158555d326149e7cd5cd21d6f303b7819f9859c4a178e98. 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/HKD252000038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2cb8290bbc75bb22a493ca4730783480ccb56be5b72beee8d8488da23bcca31. 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/HKD252000034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe14c361b69b4ffaa995bc211d1eedd12dcc6bad33240fd00a085e6669eeff34c. 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/HKD252000039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9dca605fe28804ec9b47d5a1aaed07cff7083096c7c8a7bb01ed7c32756d7cf. 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/HKD252000035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee0d5954651fae1716f2b5d70cb95614198ccd3f6ad4ce1987e6a0a0590042d. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/HKD252000046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40d716e7e37635891951eff07300329b8a859bec37e380472852f73472d93ed5. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/HKD252000032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacdb28cd10b63afb69a752d6399931f9f62117b7ea5dbfe8cd00af860b4eebce. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/HKD252000033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81affe2bb6705a3c6450ccef201409e5889661433294dda517166342411584ad. 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/HKD252300099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0939f6baaab336713ba5e4149b9fee0609e279fedc199e74934063173d98ccbf. 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/HKD252200042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f686ccba76fec2c2dd6061796d60ad10b535f0b5be5b6c49be2442c6670b7e. 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/HKD252100126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93c171fc70edf7b4be031ca43f3f674822b7992659e869698c130b3a4a635441. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/HKD252100070.
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 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/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 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/HKD252000040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81eee20d2322a90554c1e63188aa4d6911d1bf90561c09c168deab4b2171f693. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/HKD252000031.