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 0x341ffc835250fb90acaa9a689456544aebec319be55d3019ce6d3eb2129d8e48. 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/3e7142e1-3c4a-474e-a623-81b5bdd8542d.json and https://artists.proofprofile.net/proofs/artist/3e7142e1-3c4a-474e-a623-81b5bdd8542d.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 0xcc65ea4ed4be2fe1aa7f89fbd9a16450bfd06cc6315901489da1cc636bec10aa. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TWA459023801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60735028812dfe60b4ab490ec0fb731bae55659c951bce452f53d459685c25b2. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TWA459023803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e890d921de76a85c3b9fa1fa927085dd95e445b79f4bde2471f66c83edc493. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TWA459023806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eba24a511dc42800633a21d3640248e8de01687a4e9edd9d605dd2449e5aabd. 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/TWA459128501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d1aaee7fe083826d3442bb934626e6866a17010d1b8f2dba2485356f938ea0. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/TWA459233806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22bfd94fc1ade4d0c9034611aa462e56163e6922beb225e6598dff36b5992870. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TWCC31803676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x490aad56174ac7accb8f60e1eeb04e0e5a9aadb857e857ccca378d9ae734e018. 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/TWA450067801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d1d88f7026a6c5d32b151e14e5c0986df496100a775343a87bef8f8bba61252. 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/TWA450067802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc09943c68c77047e440eb149bd88fe3bdd47611217ae0b2637a8ee85d0207ff3. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/TWA450067803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ea8c2f28922ba26fd37c0408952d47f1a1ca0e73f53de5919737a001ab8e32. 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/TWA450067804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a96dad91f197a5ebcccdab6043111da36334ba85e86d6ae88799434c386605. 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/TWA450067805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b9b83c31c8cea77bd63aed8a3749b56065c44503d4321a0549c3bead695a91a. 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/TWA450067806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7213a3e941093f8069b640e5757fee19aec4573a4e7471a602913683e7596ab9. 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/TWA450067809.
黃品源來愛你 十年濃情香港演唱會實錄 (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0bef9cfd7a69b96a51b0aa3d29fcac1fb3bfbbb7792150d58f93c5a8dc01295. 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/TWA450272401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27cdb2ea988b31ed60e34d496342eac6defcf7b2dc4ce834cf89f191633aace3. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/TWA450272402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf00dded8f64355c6bd3586345e411a24f647119f313b2ecf5679ce7e58b1d8d8. 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/TWA450272403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe26f18e8cef69287dd365f608b92ffbb0579d387ede2b2f8c552726082ffb131. 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/TWA450272404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2567c98e8c527480f52cdfded07067d8de50085c4a463ea432eeb60584722737. 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/TWA450272405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf22010f964741ab9b11973288d1b8b147d946918bcbd16de60f0842d3b23481a. 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/TWA450272406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0582cc7cc601d77f1aa6957607aa8b06f38f5953f85449e085e622d9fd52acc1. 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/TWA450272407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x832694faa99dcecc7b30b7174164c43f43fee1632d39f4f849abc5b718d9d425. 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/TWA450272408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf806435235cc473cfc97a9252396a7bc1dffd74523d3354424a55364c13688fd. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/TWA450272409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc263043631d3639b35afecc24c30cf6921256bb034f968af03ed2d8103b1e8e. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/TWA450272410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01cde83aca28d2008a51527bbdd97d99596fdafb559c3c0a1025d3abd209fcda. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TWA450480301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x742e740f73f8a08a0291f1074fb2e5c5cb8f38b0beb1e3ae257aab907ea84974. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/CNA260635503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf00dded8f64355c6bd3586345e411a24f647119f313b2ecf5679ce7e58b1d8d8. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TWA450272403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5016bea75bb8ebc3bb13d2c703640f8f730c3d353ba99696ccaf20de120fb4dc. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TWA459961301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5049056a1d86adff223234a45d3f614775b70efa11b90101888bfd6c0d3dd17f. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/TWBD71511005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf00dded8f64355c6bd3586345e411a24f647119f313b2ecf5679ce7e58b1d8d8. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/TWA450272403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5016bea75bb8ebc3bb13d2c703640f8f730c3d353ba99696ccaf20de120fb4dc. 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/TWA459961301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b5ae6456f36a962071fe27842cac15a6624a669b0d17dedfaad3b40eb26f38. 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/CNF121901427.
情感萬花筒演唱會 滾石香港十週年演唱會慶典 (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x538491dffb51a6a65dbe0a72d3e58bfcf3b7b9f5d65d8efb159478d68779d1e6. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/HKB620400280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x134186344f266bde3906825a0f133e7a797d2c78a401a2b3b6a0d6a1d917681f. 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/TWU712103512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc765d55becc6067bb84071c48dc54abf94a4245dafa7d24cee719cec336b4558. 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/TWA459023802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ec0777576237f6abfe6f1de0e77a48796f749d0fd2126fe44e84deab1a4e6b. 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/HKG732292592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d4c2d2d7bb18ce9572d25eaf5bd3a8a1fd67911623ca49175da80de249b0c42. 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/HKG732288420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ec83d6021c8232b51d531bdc4ffe4d9f2054c34a0babcf1c73e1320ea346e67. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/HKG732288421.