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 0x853883d310e321e48d8f645d8cbaaffd9045662a56de80def6aa03780e6f4629. Chain 2 (Bitcoin): anchored in block 954500 (2026-06-20T04:47:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9c232bc5-263f-4166-b903-cff941964fd5.json and https://artists.proofprofile.net/proofs/artist/9c232bc5-263f-4166-b903-cff941964fd5.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 0x40f9938334d349c6c2d76466cb1a7e365231f2032643911c0ebfd1830f3ac11e. 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/HKG732028301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a22fae424d9f6494952318161478c6d8822b26fd49ea105fa903d0a53814884. 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/HKG732019340.
黑焰(《时之歌·花与焰的狂想诗》片头曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe356053cfc0f1eed7c86a8d3ddff9a416956fed018329201408bb1a8d15695f8. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/HKG732019405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85195b8b75d02d62b3689b640bcd99ee018e9045bfcb9269300001a55c8b5111. 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/HKG732010144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x617b07639338eace6f31669fe5237edd1ff734994b972e0b303249908aebe10f. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/DGA0Q2376690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75fcdcf631ea3c0ffbf3e34f1841eb819f5f8ea5393b558cc8ef51557e80c455. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/DGA0Q2396997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2051200bd44adfa4ed74ed07145900882b552e5d017d8c53e48331a661516dd0. Chain 2 (Bitcoin): anchored in block 960419 (2026-07-31T15:20:33Z), 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/DGA0Q2396998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f18703913c596d5a2e9894708cca3330106ad52428bb2afb736b5b5819d8ce0. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/DGA0Q2390103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e3703618becac4e1971afd31df40ebb67bfb8a6838adff12ddd0d5a62a34f3. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/DGA0Q2392130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d9002296d15fc217d6e26579d2bfdbc29125a422676316107b9867155b51c5. 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/DGA0Q2390057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d67648f1eacfcfc0d7fa050ec0f1c98359fd54763eef3fbd91971e418297244. 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/DGA0Q2390077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe26073b916eac910e2032eb3e6500c4567254a7f7887dfad58daf68b28478040. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/DGA0Q2380200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dbead7f691a204c3bdb5df46fd54fc97598f3abc469a6f70725a3240f9eb7b4. 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/DGA0Q2376683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80eb10a92033e2171e31888b9aa52393218693172eec0156b490e36545fc9999. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/DGA0Q2391620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7b5e1cfe7b7270287454ecb3c636fc828d0779b679c4cae6149abbb6f6259f. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/DGA0Q2398580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x396b84fc64632bd284ff349b7b088c362248076afe2435de6507fc91a654f92d. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/DGA0Q2390060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aeeb164c514c13a74d84f0b1e27a888eebf3dca15cbeb3d0a330634cc41a32b. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/DGA0Q2389996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2be1f55fcc6a4ca770100632ed2e17febbc5e89ae05adfbf4dc1e57b3e4c8c7a. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/DGA0Q2385036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0109878c782b22c04da36b144e2c338b2b66b3f958a524c1417130f92c6aa8f7. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/DGA0Q2399606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71b4d918d0ed86808238c4558cdc86e16de0bd725747d4da836e67cea2da1ef9. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/DGA0R2304812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75df2f06092920c2efb03d3a22751088ce7b5e5ffe45d603fc58ea1a432d3a56. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/DGA0Q2384478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44944d329729507ab4369d5c7fdac6dc223762076494db4d23a91bda1a474c9b. 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/DGA0Q2376686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba220c19a21b6ee52b22bdc31104fc4cf9679045d75a5381cf767d68536ca70. 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/DGA0Q2384450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x062510dec86a178ba4a54efd4004f7fab88f0497ab18b4d46df510fb0d780b73. 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/DGA0Q2391623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb76e70e268c87c06a72d367150e74c4d7d30341ba73441ebcebeab744a58d75d. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/DGA0Q2392133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e5787884a07e04ebb2b47a51d0294a96d108fd76d65730666fd3943a081600. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/DGA0Q2392126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb52d28ee057d21c954a05d171d66c9ab7f0eccd2e6cac7739c791c943846e0db. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/DGA0Q2384454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd743b994f4f7c73f0e1c5990076c94a54806a00811b2eb3b9a93f179d97aa7. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/DGA0Q2384973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x930c9247a16fd919da3e5f43d614ef63cd8c7906a0b452f70edeea09c6d17e5f. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/DGA0Q2389999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0547d71bd839141d415ef29443178040744b7e6927670500cb1fb9708faaccaf. 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/DGA0Q2399612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf045650712ea92f9600df0fcfd7e25738b711eaee1be679844ce36ff001581da. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/DGA0Q2392228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf9d53297d4bd2b1e1fb7cf1328cfe13e07dd5b269f0f61078a35cd7cbcd100f. 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/DGA0Q2399750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef247e80625c850041ae7cbda9514a9a10152d312cd7b55c46a0d9fd5a971bc3. 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/DGA0R2300556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f7fb05f84ea0039211a71ca07c301e62db2b54f9a76aeb0a1a6309997b2a797. 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/DGA0R2304056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5ab7aa1b3d341de76d644332b20d5a9bff06117cb2db438cfa3ba57f513db5a. 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/DGA0R2300477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x990a1e550aa3d7c4db19c8209d4d6a7e1035bad12001ca765a2e8f3d674553db. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/DGA0R2300479.