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 0xb56914f2f0738a63f53178f5695885365727cdcb47bf9c28aab31991290eab11. 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/fef828f4-774a-4ac8-92a2-dbd0ea33c7c2.json and https://artists.proofprofile.net/proofs/artist/fef828f4-774a-4ac8-92a2-dbd0ea33c7c2.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 0xab0086150974188dc9f65f448b4367c0288b20f997be9e619b220d79827ef1b7. 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/FRX452171337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f6b33aeede409e28e1bf12326d4976d90db2b6a3db2c28da7ae119453b16a07. 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/FRX452171338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x039c0df9a5d62ac51bf85def1519a943e3e7b411e708847acd0128ed4ea8a8d7. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FRX452171339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ca89f68c5aa5f6e854676838b5624b0dc4de1c7363b0955390212a71e5f5a5. 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/FRX452171340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddaa6d1249ff820b3af5f760250371ee2bf795edf9bc89d880e5fddf104b8659. 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/HKG732368844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f066f85311796b90e7389213b3ebbd5629b5df07685dbe83be787eedc3c38fb. 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/HKG732368599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a581bc94384fe34da75684a2bfd78fa307355529bf66127da9c30e1f5ac32e5. 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/HKG732424033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f8696fc01a76890e45df53fef6d3cad3d7af825fa52b6074fcbcdfde7d68a78. 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/HKG732424034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e8decfa89c688df63d4b0a5a236d44af7501cb504407f0d98175cd1f2f4703c. 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/HKG732377026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe25c16a0d5e70ef2e5397863999a9d73b4d5e413a42c919eccf6c2bed326eb46. 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/HKG732377028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ffffb5222d5eb364b87b66b71555c06a42158e16ad014a90ec9e925feb5afa. 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/HKG732379016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa19e44dfc831314810a5a1daa73ce1c35ba4b9e11a567478a23acada82b22fa1. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/HKG732379020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x533699f1099d7ecba33677866ffd1445541369da84370feeb32037bcc0fe2c5a. 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/HKG732379022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c64d8c9168e33ce81b7e14664ee6b4efd0473ecf05977a1059167356202318. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/HKG732375553.
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 0xebf6472b7ba952cee7cc78614c87ae1c574a98f99b59ab05955a2940f7c1fed3. 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/HKG732488633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1b616fd7bb2e983fe476d51e0357f4ca0b0e2927c24e3df46dadae349cef341. 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/HKG732488634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ad8e321b449af2bdbfaa9c1392f046bf3ba8eeb6e05466c484d5cd654eccd0. 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/HKG732488635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd847a65b4b684e802cc90e6764646418189e1a44fb8fb66f4e637a7f76b40a. 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/HKG732488637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04abe2aefacbad2f71639288b5afb79bebe98073632985522d1294087f450d45. 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/HKG732488638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1826ed05e4a32b33d6e85738d193fcf310dc65fd15fa47634ce1025c398c64c. 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/HKG732225617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cb0edf8409db5a25052476fdbac4aedab638e2f9a80330698c6b594e5e74c59. 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/HKG731554021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9960b90a44e47d83644b14a8845de40050e80af3fe3f43eedf86f158c2e1f18. 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/HKG731554001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34ac66a3a00feb4d0219c03d7f649412f655b033d3349fba4900e145d52de588. 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/HKG731554040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f5acb5765670ba9c0e62bce87872701b91b8d576120ca41f3d3c0670c0ed3b3. 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/HKG731554017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa5c5261845ce42924f5f7b2246545dc0ce6c1a1be65bb03d5415ea1bb66575a. 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/HKG731554313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6a912fca66f2d6c1cb6aa31ec4fe27204ab6e2f4c7c257580ca42ef72f0b522. 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/HKG731554759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df9f7ef69290632179a0d7dad4de24e7681a69e68f7bb1243a969f840884102. 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/HKG731554802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad23cd1d1e3bea3bb7704c615a99353b198c998a9ac219689ef856ae66417da4. 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/HKG731554789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x660034c3ce5550364ea9cd63b2f019659f049d3b6a47d6702058c14c7deeda64. 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/HKG731554775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe8a0233b01afd2a4cb0e5fd6baee7ea75519019a2af54a04555070553147da4. 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/HKG731554380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4438b3aa61fb413e15ad067159d77bee9477f2a59d29510cd0661cf4db54e4fa. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/HKG731555128.
未完成的时光 - 影视剧《芥子时光》主题曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3700d330c0bce0bbdc495fc21e23ed0da8362313ec2ca1158a89d41db9ace24e. 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/QNSM12400865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d211d5b2567c7ababcc49996807f8383cfbbdc2d5ac23f4640ff9a3130a7c52. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-16T13:51:43Z), 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/QNSM12400869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac2a724d6dd251b0ffd6937b07f1f156a0199332a039aae02afad455eaf8022. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/QNSM12400866.