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 0xf52831dcb4c3c2a38b0dc70693e1af5c70b743774b55c1edc07541729a1329d7. 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/9ee8c493-100a-46ad-82b9-daed93173ef8.json and https://artists.proofprofile.net/proofs/artist/9ee8c493-100a-46ad-82b9-daed93173ef8.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 0xc9c10d854abe519386584775f334d33d67f4fd885cf556e6945ac475bbebbe04. Chain 2 (Bitcoin): anchored in block 957012 (2026-07-21T21:32:13Z), 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/HKG732105456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1e5971824778ff6eec4e0cd601a3469a37e58eb713d3385cf69e95b56d7d5a0. 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/HKG732105458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae55ffedd9d50b4a7c362ddd0c65d14bc6fee9c611e0d5659c33091dfb45e691. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:49:41Z), 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/HKG732105459.
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 0x84224c996e88f036bdf61ac4191aa4877c616769bcb89e089445a81be2ade711. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/HKG732105455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288146a40321c4f7fc0d18803e0db562e4b51538358a1d7a20108678935c5a08. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/HKG732105457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f6cbf818ce7ebb4ec5d1e98de7005215414ed556000f0f51342845e2aca1bc. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/HKG732225680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x229b6cf000585523b1aca5159e63d819d49ba564925e64e765faff062bca68de. 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/HKG732422414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc355661db1b0a73930bdc6af9da3466bdf38e2789bea3409caa824c970c8dbd0. 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/HKG732422415.
萤火微光（王者荣耀桑启治愈音乐合辑）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24585e023794aad4c3e4eb17a3bd04ff81068d21a175a4065b6a0b989c8e7685. 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/FRX872188716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x085fbc32d422f757ff275408fc67bcc81fa7577e5f39d52ba84a7cb2107e243c. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/FRX872188717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8788a438e9747bb91dd72e2a2b47ece34b07ed235d71649f5ec0cc7aa5d77d9. 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/FRX762144565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89f13820a771a4e80b5800d0e7d4b303b8ac508cc4881ec11783db689e3e7db7. 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/FRX762144566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62cb7fbbf7461eb14373ecd74c702050cf84daa794c00aa5b36d7f7f895478a5. 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/FRX762131756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05763a76e20bda897aad0c94fdf9d37e5ab276d4a47d2226a8b35a0481b71431. 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/FRX762128619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe67aba9f09281bd135e68e5ac24ee5d2fc348bf22c268f8900a74bb156868f39. 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/FRX452121662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa343442354d487898cf7a9b231c111aa36f48e94340d1a8384e2c3ae24fb4583. 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/HKG732221101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a488b871cb2dbc08174e9e26bfd92a6eabef3c24608e900108418bdd6db42cc. 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/HKG732120347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e3b99efae502830088fc7456da06255d50fcb69a9f68746f0457e7e2de112b. 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/HKG732131421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28116c4dd047bab211761427b8ecb1f8c34cca3d8cb13e36cfb81f725ec42053. 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/FR10S2113620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e67dac1d826a08cc8676b79bd706ce27afb5823986f070c9bd50ad4950e1a52. 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/HKG732100622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21037cb1314941d81d0fda7ffbe15c195c28e87d04f9cd0d00395c8223ae763e. 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/HKG732133173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4e912f467e7d6478cdd0a665e097a2aa8ec44284d75257d793e36d4ff320503. 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/HKG732243633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf17f88f7c7af1fba07411cb01a6f3bec544e13c651ea49cca43117948b5aa812. 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/HKG732027153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3fdb0271a2003cbf814130c5893f356dcbba868c5a8cfea11523c779e0998cc. 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/HKG732028320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb81212124db450b3b1470795299fe1464fe3585e014bf714ba457ff5c4a92b71. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TWDL72016070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b83ce0c6f444af9799353d88dfcc7cf1ef2b8833b27e9f2aabe0684a65c9e2. 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/HKE022217139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x210139b549795eb1e86a9f0c8efef45ca1a8988bc3e46009bd0ef94697640bdb. 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/HKG732025140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x954a5af9e0dafc300ad44919ca5757d99c400258e8c9eeded9d2f1dfca6afce7. 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/HKG732025553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdfa96ec60868ece31dffd2c4480980e8d3db6332cc10135e5f161218c630616. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/HKG732481513.