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 0x9bc6d51f25457a4ec88a5d9d5ec7aabf2858fb9118c7fa5dd73f7014afe7b722. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ecb6da3f-4796-4d13-86db-f06b236a226e.json and https://artists.proofprofile.net/proofs/artist/ecb6da3f-4796-4d13-86db-f06b236a226e.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 0x38896b886bbd292c52a9b6449073642ad8d049cffb42c0c568ed8637bb34bd14. 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/HKG732279473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71212a42125253cff721bea0d9b736cc8bae13699bf44ff6de8b743a84ae6158. 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/HKG732279479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabfce3906cbb6f02f075201d07879a170413a76efb6741ab471ded6b240cfa10. 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/HKG732279485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7149e01f6e0e25d1324e83703ab07c11d2b6240d433f5e03fed9640c13e00c8. 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/HKG732279487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9e3e6d16ce002d273a55bcfc3b4ce287de43635c055291343e0db5346bffda. 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/HKG732124310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7980efa618806144c9da5367da7a4a6133e4310c2e64a83ecdd990e237a7051d. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/HKG732279964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b1a0fabd4d16e2a8ab4225ef182d1a0cfe16da9a62838c7ae0bf8bb8599daf. 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/HKG732279966.
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 0x8735ae743a14a585304f6872e017ec392236bfcb6ed6110aa1dceba02000d248. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/HKG732277857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fa61b834ed7b48ebcb304d21bfb801db51c3a294908cadd04128eebc0f95f59. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/HKG732277873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6794f0ad3a280a5b8240f83fc6e0ccefd92bdb560a2ab77756c7b8af15de3ce. 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/HKG732279529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07bbba685b93911a5ea494468305fe9346b3fb11643772e0aafd678b1e03c94f. 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/HKG732279535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15cad02a33f28bc66f73ecf7363e7ed0c06e61c3aab4fe46f7482cc488e48fa8. 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/HKG732124278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd85ae2b2bbf3c74d4b47a562dae9b52e17b68db70a80f5f2230cef0415c9cd3c. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/HKG732124294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x044d657f108215243eb2e03996b09cdb7c847a5c666df579310f2212ac8234d8. 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/HKG732124296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb57db5aaca295a92ce836682875f0f96c47375e8a353944ddc05d3581b3e2a1. 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/HKG732124290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe180cdfd17583036fbd784368fa6ec616f2e9c34a3caaa2fdb46cf09ae87d8d1. 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/HKG732124292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae169d296bf6fdd91ce1497ef7f826e172bab8e3b54b4fe93aab0aa1d5f8ca9d. 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/HKG732124256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x784b0d228cf903fbfbf8689ecf20d81d40a26de55838a3bfbbeda41a368b6a15. 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/HKG732124258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eacf6f7e95437ed8432c05b4c74840c81d60ebba10a1c9628dbdfa8a563f8b0. 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/HKG732124260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe61877f1a3f0fd3efcd65672356df276f6c12679b49b301ab72c7fc2108bb6f. 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/HKG732124284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de6f2f92b81fcb12e14a885b02465270ea94e5d673c0d7fa6cddc42489d5342. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/HKG732124286.
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.
有你的陪伴 (影視劇《山寨小萌主》插曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf409d828951b267c92af2612c816bf4e8db81797882fd5918ee1a16fe41184c. 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/TWU712002387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d182bbabcbb05f24f4f4549ea8786dc29442355d70238d4c035ad419616197a. 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/TWU712002388.
尋常人家 (影視劇《山寨小萌主》主題曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba4d8563508c51daeceb32596f7689a96cfcc69e2ab35bf7b741970c3638dc38. 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/TWU712002389.
江湖不知道 (影視劇《山寨小萌主》推廣曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc09f8c7541ce6bad6846882393455c53d586d09da06022d42c586fe45e2a425a. 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/TWU712002390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0283db13501492c38daa220e893167142a8f9ad430c6ac1039d7e9ca1d9eb71. 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/TWU712002392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f58dcf03572cd7ff7626d9f32a4a9adc2a345076a366801229d0ef1333f3241. 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/TWU712002393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e438aa2dafaf483f7726fe6fae4f19c3d29f523f0e3b15de5ac885180f537b8. 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/TWU712002394.
最後一句晚安 (影視劇《山寨小萌主》插曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ece5722f148672b23e7bce72983026beb5d27aac582b7d3cd19bf21ce95c6c1. 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/TWU712002395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ef43d0acd10a713c90e8e20141c4fc3ed233078ba6473e88be9f2e6d6c339f. 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/TWU712002396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19d6bc2ac8504863c393ef17e9b28f1d3fb097459726e8c04bd626c18e9fd4aa. 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/TWU712002414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb90098ad8a216cafcf43845dd60bbafe7427e955fd5b3ef48c10788908c412ad. 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/TWU712002416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec9bcfdd898e336f7b12013db5b713ee209693802074fceb27a5f9d069b1cc33. 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/TWU712002436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4876571acd3b553fdd7495f0573537078c8b37c5e96861e688996bf5173e655. 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/HKG732279589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207a7a81e72715f97a324a4850f8af8e75f90e09c87fb3708f989945af092267. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/HKG732124276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15cad02a33f28bc66f73ecf7363e7ed0c06e61c3aab4fe46f7482cc488e48fa8. 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/HKG732124278.
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 0x44281d67f4b426729a2743b6938cb63db01635796f95ddd3991b623baa52b4b7. 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/HKG732279603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca702f8b939f2b7b216f1f3a9a81f4826dc9b0de9a6b76b155f81d493c5aaf6e. 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/HKG732279609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eacf6f7e95437ed8432c05b4c74840c81d60ebba10a1c9628dbdfa8a563f8b0. 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/HKG732124260.