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 0x879d96cfe5f99d89573494c6297820de5402a9278e4c6ae79ea44f9dd8800917. Chain 2 (Bitcoin): anchored in block 953750 (2026-06-15T06:12:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a9a050f1-1539-4d88-b7f6-53be84bc6de6.json and https://artists.proofprofile.net/proofs/artist/a9a050f1-1539-4d88-b7f6-53be84bc6de6.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 0x1910d9a5e06b072593f77f074defa4426047952e5109ea03411b69943fcadd7d. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/US7VG1713832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b314b9f76555c3c94e8e03700e24412fe47bd0eaef56502e0ca9044b3640aef. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/US7VG1713833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb58e8359a32611ad2ff6ea9d510fab59d89eccfb9640d03c44b19cf48f9b0c3a. 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/US7VG1713834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d0b095f8f48ac87ad4e4ee4950340757449bb4291954d02a24fbb233bf71d53. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/US7VG1713835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x804701fd6573253cfbf9660ed42efb9dfc3e50fe5f52ad88fe3cd38ad6e2bd7f. 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/US7VG1713836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce067d61b88beb5beeee43906772e52dce1a81d056425ccb2fa8e8b8bf9ca1b6. 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/US7VG1713837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d4e4782a146fc7e124507b6fb2562d9ad9acb48f78dadc223e94e6e525f0437. 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/US7VG1713838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59dfbd0cf0ca762bb2c54fb08baa96a7db21a34a38e8b4ec90a32117f4d3acbf. 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/US7VG1713839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b25b7c3b1fe4359a1086ccae4844deb7f596560893e5a30a1a27b5c28f7b7f. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/US7VG1713843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d61d4d56483f3b1a5fb7ace3bacc4372c6adb43830134f5d32f6475d54f8c4. 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/US7VG1713846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa0a96d95d6408081750eabd0f8c39ff3ec9c057ad8c903ea3b4f246ca12ea6. 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/US7VG1713847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc23c636eb9b89de32f550f53a5954edc6473d93a456566eae292c70e8555aac9. 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/QZ5AB1984107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x911145623716ebed7d9b17cbb25a88a59d2d500a720aaca0d734bd8418d8e7b4. 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/QZ5AB1984110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0bd0615b696d8a78d078c47a50da58a47f173f43df905eea9d4b5df6771d58c. 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/QZ5AB1984111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5424c2a82e76360e0746fc573d18317c4e47ba9f9f3a384f538baedc85324eb7. 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/QZ5AB1984112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92393915a96c35fbaeb808e89b4a803dbdff314aa1a7ef5a4cb7ba6aa5355ccb. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZ5AB1984114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa21bff45575b112fef97a9d5b6a2d9d8c2aa00079974849b5a8a8d20d08907aa. 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/QZ5AB1984115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9bf02ed99c26eb525aa7ef09cd15af937a8d51b8ae9a2c4cddfcae9a0b49f4b. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZ5AB1984116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2778909aece2bbb3f53965b0e520291afe8c798180ccde1dd0b974a3c3aa6995. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZ5AB1984119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eeadfc1151e7f0ebe4de299a0c1fa60cbaa6ec1a7f3db17526983a0de8c0003. 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/QZ5AB1984121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dce65b7fab59d703aa7d308a7c094bb79dd519145f7d96a2a03635f02c572ae. 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/QZ5AB1984125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc78dd1db8c75f802d77d11181569db7439d1eee00c299df5316eb186dcb44ab8. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/QZ5AB1984127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x724043ee1fa2b0e2925ccdc1c0e1e9b400f4146857a3b5b3b1c7290d5e425de5. 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/US7VG1606831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46388aee4609d78796e49dd5d2fc1ce0062cdf61c5f069c0cae295a3b4d81e6c. 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/US7VG1606840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a83c2a36c7113537f63c801bbc1a34d0a3fff9db7a333bf241c5bfdeeab441. 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/QZNJW2001260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa68ec98b518ee48a5d51b30e6cccb1a546c721e703c74e3aa6e31bd4479a280b. 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/MX3741401016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ad2c812836a40a420867291385cb6863fc2996102c153037161ea2668fa41c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/MX3741401018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ba4ebc60d474131b033d4d7fd9eef621b95b8a88b1e6b8065fd6bf8ba6f09b. 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/MX3741401019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e73564782ee8a514b3d33ec689fa00b10f7c70ed1467a0ef6757ba24ed152ad. 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/MX3741401020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d609d90086a07c174c11de3523e8ac8d56cc7e62f70ae2749ba597a4cb367db. 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/MX3741401021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93c7e5ec400f94c67c2fb39f55499addc9678f1e08dd14667a26524f179fa1ff. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/MX3741401022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x921dcb9b992196c00d1ce93f0208f9e1d2dc7ce685048eb5ffa04294911f7d4e. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/MX3741401023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7e87f60bf4ae6a689e649f8dfd037bbb853205c91556790a264bb21d420ff6a. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/MX3741401024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x099e8f03b0270de0472fb36a4f90f4f1d07babc6980ef72167b91cc3abe861bb. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/MX3741401025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c1f6e0be6e2fb62cf8f4025f51fe149c5fe69ddb1040f6d4cce1268e5465081. 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/MX3741401026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64aba7f69e1c18a4dc1d27d2b95b68c3d192fb45fb2037bc6dede0b3746bef3c. 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/MX3741401027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf4ac326dbc1370f7cb91580fa9be7ceeb6d6e09d17539cbdb762f771fd93963. 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/MX3741401028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91da159f823ada4526ba61c8e805884a07e7125700f28c1e9dbf5b2bc5c782cc. 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/MX3741401029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7095f23012bf180bced6ca3d19133453f7e69dc39397430df13b154c568f533. 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/MX3741401030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e9a69645fa234703663be2a06b788e7fd19096b71e7bd8d0207d7005517ca5a. 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/MX3741401031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc23e360db676d5aaf5a3fd0a932fdc3fbb9e51badc5ccac00fb3ebaab8fd54b4. 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/MX3741401032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x688c1ad8864c4c1303e46bb79a9aaf299252b04fa0a7eb039524ad8169c14f48. 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/MX3741401034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff269370f5a632655e77c251486c08fd25ff4917810b99e6800aa77713157683. 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/MX3741401036.