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 0x7286cde111bed6f08d66d34c983c741fc5860357ebca60fd7086f49394402227. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/27958b0d-e4ba-41d4-aa96-5065cb93edc2.json and https://artists.proofprofile.net/proofs/artist/27958b0d-e4ba-41d4-aa96-5065cb93edc2.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 0x18d9fd1013c8a2413834ecff4be2112d70e64dc8c8cbb47308c2a9fd0ddda940. 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/CNZ632201039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bdcb0825e99721d3953a05cdf13600304a673acf2ef64ccb696363d299929e4. 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/CNZ632201043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38896b886bbd292c52a9b6449073642ad8d049cffb42c0c568ed8637bb34bd14. 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/HKG732279473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71212a42125253cff721bea0d9b736cc8bae13699bf44ff6de8b743a84ae6158. 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/HKG732279479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6babab7c7d78f1aacfef960568d52c628c2a3dd397b43140dc737f70af7c7dd8. 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/HKG732279980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa98978d33c4001a740eb21b5f2261dd60c412bbb23b96f898d586147fc7f66a. 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/HKG732279986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe61877f1a3f0fd3efcd65672356df276f6c12679b49b301ab72c7fc2108bb6f. 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/HKG732124284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e51232495aad647c0285b189fe40a4071c0a30e449bd2f9a92fc66f9016e2b. 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/HKG732124288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4876571acd3b553fdd7495f0573537078c8b37c5e96861e688996bf5173e655. 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/HKG732279589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fe0b63ce1f11875e1e402c142af17c1270930255c445d487e6cee1b6a08b927. 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/HKG732279625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63170b6e24c04867c12aafe29ecf9f4e495ee5e30158c28dc04d17b658e42e68. 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/HKG731764060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e0a895344948bb597f1a78e805a1473bf69152ab03ba1045ccff0111b9495e4. 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/HKG732279619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d94f7ac0bf510b43d23b70e49485255a9cbb6a4fd941d24d2ff21235449d95b. 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/HKG731664875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bb2c61e81a6c5b04d3289718ce49de8211b9fa836834cdad985377361338704. 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/HKG732512783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ac3c498829aded2b36753e57f29bc34a01d8b2ea5150e3180fc68bc7cc1ed9. 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/HKG732488287.
影子和孩子（「呐声(Nation)」·民族融合音乐企划）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b70076a79aa6ced2833b80c8b5ac8aaa5c24619a52c92e587bddf1a029eb2e. 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/DGA0L2364460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c4e21d4865b540a2f7e0f23277be256e6c82b964a45154aeee6a3f41ed527db. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/HKG731894206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb94a423582489377808920fe29f40c89579ad4ce59160c408936f860063576dd. 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/HKD012507137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7073f37460bc393397249bcbb78c37904b786fe72cd514c4eb45d54a9338d113. 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/HKD012507132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5137857fc00e0927eb68bfd11a798a89fcd01fa4c07d609493924a37224ed63. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/HKD012507145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd349bf0a274d92490b8331c5d69da793c8e796382fa22515a3b8675df6eb25e. 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/HKD012507146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3baa2cf290cbc07e83abab9eaa19521a20e69dca3438f2a08b7ae2442f49dd11. 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/HKD012507142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2065546c0df983bd22d7a427e172961a14397afbfc7bf609234c45855b00d6e. 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/HKD012507143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4abe001b0436e8ffe9b93950997914fd52e262323334e0a73edd39711c1cc65f. 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/HKD012507135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x962ba374b4c359d5909fffa7d16b566f30fdb526fe1c162325f91539695aa4c2. 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/HKD012507141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac700c250161047460efcacc6859852ea8708c8bcda8cf3ffc018dadda7d205f. 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/HKD012507133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f002858829394b48d1e8a3de60f7cf374a00f14940ac00cb60c209eb6a63272. 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/HKD012508342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e4ba3ba813c1a2c022de5571d47a92c7e6ad8b170f4629fa9bc9d7d2dbf5d4. 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/HKD012508341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ba0152833ce3bb907ffa61141a055fe318eb35f54d889bde645b3064627205. 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/HKD012508332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34ae8a79ef4d92b35594ffb86505f2f1dd042f99ae06902c3b0f8298a9f2e90d. 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/HKD012508349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247c78c89e160be99d1b2bc8ecd3431534d4f4ae42610780e3dd8660714c491e. 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/HKD012508333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b4e5c4b7559fb2c78ea5c3576b3c504aba957cce282a3737174d8073656fb1. 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/HKD012508348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bcd7a657d1fd994aaf5921579b62517421447d5d38287c692f8d82915cf9a0b. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/HKD012508336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2498c4328371f8ae358918812846dd56ea04955ae27850b4b1328506747948d4. 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/HKD012508330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x720592c5470e17dc21a64ba0969414452d0134dd4e93a9597a70d4a63683a7b2. 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/HKD012508345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38f88ddd2e6bffae7ec35a7f051908d22b677027108849fe910a299299a907b9. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/HKD012507129.