__NOTOC__ Qinglong may refer to: Azure Dragon representing the East Locations in China Qinglong County, Guizhou (晴隆县) Qinglong Manchu Autonomous County, Hebei Towns Qinglong Town, Anhui Qinglong, C
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 0x9e4eec5d154bac76f712129a59df8d578452e2b5801c8607237a374327ecb39a. 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/61e64a5f-7dca-4091-b0cb-49331a58449f.json and https://artists.proofprofile.net/proofs/artist/61e64a5f-7dca-4091-b0cb-49331a58449f.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 0x1c74f143bd02845843ae24a531eab2b729e58b9ae1124a50328439dba1e041cc. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/HKE022374770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73555aa38f2df1a294c1d411867ce7c3288e97814258504b34ad5a88bca5231. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/HKE022374771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03496848ad03857c16f6acbb00c970b336efd92e442040e5800ba389ddf9d3fc. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T13:14:47Z), 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/HKE022374772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a881039681f4acce2e34de913e4585c4570f012dc2120b7c05524bfd76213a7. 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/HKE022374776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac79101d3d66bca98f4e1af62466081ebd40f325def96e07616674ad7368825. 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/HKE022374777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76860d1470e9e39ce430e087000fb05e1bb5947eb2bb5a728dc0441de4b5adcd. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/HKE022374779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x798be771bd50ab3ec4a6f3fe46c0ab359694264fd12229262446c37fe102198d. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/HKE022374780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf715986f1b0ca3ce0b081c3f0615cb871f43a560d0234efe569ba2ff2b5f94f. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/HKE022374781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe539c94bdae0900fe0acc6673ec73c075a61d8bdb5e81ee22dc5f4c3a8f904. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/HKE022374783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f37448309b348b57b81080b7d61c55ad076d908689b51b3cb13a9fa4ee344c6. 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/HKE022374785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x818ab64e3756635200ffa558a0930838f4bf85f95664f6caa26f5e9bd080cfd2. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/HKE022374786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a6488d1cbcd6dd9d2f824260ee14e2d210fe9b261926026f172c06c05d0a346. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/HKE022374787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a9fa701de9fb1e824f5d7a06b5c71f7ec9c35a7e79f6b7f10949adce2915277. 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/HKE022374789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc33df877693c6611039952d5ae5143a0f6753b19b6344377d54b098f3a15fc44. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/HKE022374790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c0fd20c147540ccae8a0d1d408ae00a2f7ffd9f195a0efd06e06e19e306845d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/HKE022374792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a634647a11dc14995955f670a1c80a85ed2929ee83c5dd2711ef973aae3fd7. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/HKE022374794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9262c43b729206f61e8ddc8f77f4ae999a6770460fe72f13657f3d290e2a18fa. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/HKE022374795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5be75703837bcb3833d4bfda5397574d12e59c6e8aef72570e68bfd0e821ba. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/HKE022374796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda7aad9d61c2812114d7f560b3ee6ccc775e5c795464fbd115fc078ddfa45372. 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/HKE022374797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64ab619dac6643d5070170ff26ef599696d653a55913d46679c726bdb0ca63a3. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/HKE022374798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62dc081e1f2f06c335450e0645df272dccc274f72d6246c2b3daa8188c1ee696. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/HKE022374799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7843777e3679318ab404aaeefb13d7784b1e69e68e5fb8401685ab247c9257ea. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/HKE022374800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea8da8a00f403669b925ae30334aa5a14c9ba7ec4cb562812829d8642d94f5b2. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/HKE022374801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe28015e2bccb80f99c8ab38c17044c18bd5551c1d9420dd84dbe168eaa76b3b6. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/HKE022374802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f23f488cd980841fb7e48750910a74dde0b8ed30c4897d9050db2db8dbda3c. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/HKE022374804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb6d20d69fe9d006c2f686f262e71564efa1c3efe2149f72d24d4693b982c5c. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/HKE022374805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x014a9197216bedc1eafa07d66a6d28e6f32d16f85eed01960d26ba183993ad4a. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/HKE022374807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef5ee8e6855a50c06eb5199a7482a0f74b0fbcc786a39debf16d1d0131cb9cc. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/HKE022374809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x208b9861132fc15688e5151f266414ad74899983a3b47e97faed7d0f9937b130. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/HKE022374810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a52bbba3d2382ab80dde5e7aab840af92b9880a26e692b726f1faf661964821. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/HKE022374812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60410a2535f98c15333a9af1eee70ff75353026e55029fafeecac2ef81e59712. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/HKE022375036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e275273252e725cb4ea64eb6b28f75fcfbf027447a7b4e94f6f5d197dc5e0e0. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/HKE022375039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ab835e01f2e53172bbcf93dae76b63ad7bb2542c3c735dc41dfc426b16af04. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/HKE022375042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa76db3588e72660d5d3be5d11ebf442f4eea28b5dfc97ff62c2a0d103402e582. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/HKE022375044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ffb9a8f8b76dacc67e9367a21819a0c16876a819e38cbcc6c6bf2905cf6f4d6. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/HKE022375045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0b4778b2a4e598534972b5d1b883c9920543d8c4d782de296c5cf33f88603ea. 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/HKE022375047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a729e2402a742094f608b6d3975931ab1ee141a21c3baf15a8ad8add262587d. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/HKE022375054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c9b43d34bdaf0e88d67c203cdf6cb633bf6be11fc15445c38464080c8679091. 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/HKE022375059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11153d5839a5dde07ecb711e1828a8fe96ecdf97f98404f04b18fc30eef6bd69. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/HKE022375061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c6d7e3a5c285fc10d27993c35f62ba2ce795a45ab89369c9317b9ff25765ba. 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/HKE022375065.