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 0x6e9dd2933f1dca82dd437eba1fa75b4619534a46da03a6577c26a66447d2143a. 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/ea4e7ec4-b972-487b-b5fe-47aced6130ef.json and https://artists.proofprofile.net/proofs/artist/ea4e7ec4-b972-487b-b5fe-47aced6130ef.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 0x3964e20e374067ae649e2d118158f9e11b8e806530385040ff0e511d475e3ac1. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/HKG732141369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6353adfe4121ea21e40f41511a2ca4434f12b26060c337aac0eaa9d7b706f44. 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/HKG732128276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad8620156417fa9ba1f4b1c9a39e937ec762a669bd968894e874ebd4ff929b6. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:26:03Z), 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/HKG732142821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fac3aded845b236e71629c8b3226803e2bbebbdf7f4828f5f45d6e456188eac. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:00:43Z), 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/DGA0H2425564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb15c62420b6137879dcf6420126be402620c0eaed1a1cecaefd304ba06b84b73. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:09:22Z), 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/FRS182105751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23087057923b5898f76730a30e4b3adc1a133c10cf12913d71abc35af7071126. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:04:28Z), 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/HKG731775350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe68208ec36db0f2a7a7671bf6f4f89c9ad36058cf97222ede7cdf1bff9aca60. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/HKG732249928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30bb4952feeefaa724f0eeec5ed2b218d59f9ae196adeaa157b1b7027886dbd3. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/FR10S2329125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x134fccca448c57190242707871518b8de89749c2cdd243c004103c30e9144005. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:31:13Z), 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/HKD012378968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3dc7cbc46f93c94cdfed3f53000e632db2607572b79a0b555a6bd4cd27c4086. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:17:21Z), 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/HKD012376498.
心甘情愿（《我的老板为何那样》影视剧片尾曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3fc436d483507c4fb249955faaccfcca8cb6bfdc97818d10e6a1721dc0354ac. 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/HKG731681975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdb4087e804e002d5df36c3923c42aa870483176e9845675a68a3b447396c09e. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T08:23:47Z), 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/DGA052306155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa67b2d505e681432c9feb14dd5ca0a168e43839a05625e1802c8355c961007e7. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/HKG732355542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c23dba2bbc37e9d6063bb29118fb04e5d9b7d3190a6bb1d7bd28e5f50303bf. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:33:26Z), 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/HKG732357202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ae791caabc8e40116c6358274b05ff4266b62b2410c27c86163bd2108ac6c7. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:10:29Z), 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/DGA0L2319399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x077a56a83f0f5a236935363a559af6a1c5a5b1d948d6f62d7833eb3e12d28ea0. 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/HKG731647223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x543bbb1d0381794793d9a4713e8f91feb605e1cd15e17b726f256f3d99888c31. 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/HKD012419839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc851dbaa50a2039026e0d150a4c531617da3546c785f22bf5bf0f59ffb5356dd. 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/QZNW72403292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x078ca7b4a4395821f2859ad81733d28ccccc0030544e0c37a03b98fc87761a6b. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:26:16Z), 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/FRX452489533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9124f3b0578b3401daba09d612a81091042c7af6393bab19e0e51302f61b2e4b. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/HKG732422081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd344a247ba1b381c557ff1d469c3eed4ff4bf625cfd89979f71a89374a8e81. 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/HKG732455399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x690c70a38ae62fa3c3426b3d07ad9a685abec0f84053568814f971f302147d5c. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:13:44Z), 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/DGA0L2488835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ed9a0b3a801fed0b5f419dfae33f33f7e8506fd295d34735cd76aa01d0ef185. 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/DGA0S2442122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x587ebbbbba830dd7fc105b91a61bc439f226fa3a85cae3eafe2e8ed0e02458ad. 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/HKG732494723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x206e3fddcff30dce9f8b2419ea5c8981d8131e8398f32344a2d9abec02304890. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/HKG731407286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad3359d848fc4d444822f80339f31421b2bd5958fdcbbf221219779f1396f84. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/HKG732507263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d07b3d12d8cd6c0468e1053f013ea3a6e19b76d960579d240d14d1c7aefa7a. 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/HKD012485937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6cbe91b95549e22b03136141745e31b7141594f47dad753446fcf33aa261be2. 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/HKD012504033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e8049c0da5acd1a88ad4f33d9ef1ad475b664f66ef7f4ce12e187ff9dfad6f. 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/HKG732349446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc4576bdf7faae0e8b9a6037c81ee5c584900c83c9d90d451f8a41116c7678c2. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/HKG732349445.
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