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 0x821be0a4d300e9b83f376040312ebc69250a352a7ff15820015f7ec2da05dab9. Chain 2 (Bitcoin): anchored in block 953782 (2026-06-15T12:13:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d52b5ae6-b3a7-4a8d-93e1-7cf478a9f068.json and https://artists.proofprofile.net/proofs/artist/d52b5ae6-b3a7-4a8d-93e1-7cf478a9f068.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 0x61a507d11a4d831a279a3c726e9f425d53a590698e067bc4897b2d1b64162ea3. 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/TWK871100201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e03b8aafeb5c9e569bc906536e526bf6caa467ad7ce929ba65da12355d8e59b. 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/TWK871100202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1884c2a4421f70a9c0ed8aa7ff1c2517bb051d6784002c83755441ce06b4e82. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/TWK871100203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd39f1d2613acbebc5baab2a1895260eb1f88df8b73cbe4997366ab5a04f077b1. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/TWK870900601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86af4ed1f6df5148d58b381f9ff34b32550d1f67721f3e640e67ce8cf0d40dc2. 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/TWK870900602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeefd4eda2a53a6590fcbf3a5fbbb5e4e5470c2ca50a713a950bc4e12cbf44d9. 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/TWK870900603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db11b5414eb41bff11d842fbe2bd89aadf669b5ee638aacd26e5b746fc2dcbb. 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/TWK870900604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x799839a1c1c21d5f408febddb60eb22252ab63caebb7b452a1292606555f8ffd. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/TWK870900605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf91a2cb66df3aa3ebedf2ef52f62cc11f1cf478790fef9538bfa03e18a28bda. 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/TWK870900606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb497eeb8fd0aeb533c502f7b5a053ff10f279c15f8fc1fe35ed9078625b3378. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/TWK870900607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecb60966b9ed30a53e6498e2314c3a260a75e76b755794adb08bea893b100417. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/TWK870800201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc26e574a8758e3b323a1ec59e897e33d778767501db85dfa401210dbaf6893f3. 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/TWK870700102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f30ee8391b2687fece14eb2c74caed5ec5f6a0fc5c1af83ba9c223b39d18bdc. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/TWK871200503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x569f88da06f0a7235018c8391e601c462a3391dbff7c62745231988cc60eb7d0. 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/TWE531920303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ae7e712aa99396cb532d0244b94d855822e43a20862f22b77b424b2e4e6564. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/TWK871000103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8845223b9ac54c66afd145794699bdb8cdb94b653579b8f6b14188db2e02e24c. 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/TWK871000104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78962555bc9c1fc191e7f9a913f19534580dcd7d0459022d88d0844ff6764383. 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/TWK871000105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd230962138148ee881c619bbebeb091541be5487d3ab2bd2b41b757d94d59eba. 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/TWK871200101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f8b6d92336e3039c85d8c10b7413105d4440a84cce11f3e3bc35be42252d88. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/TWK871200102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x268385c3cdc80413c422499b558a13b6db13892eb5992a2412bf6e30d7cf6782. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/TWK871200103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x768bdf38e87286f4bd53916f52c897d9a042e9b4a5b377506185e94bfee10d69. 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/TWK871200104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x009b8c02dda43d8366883e3ffb4f2b4058048eac0a4a4b2ab78bc4edd6e2145e. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/TWK871200106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bdea6b6bb43d50aea91a84707922ed5ee3a7b1da8451d58eb76b6d16d943209. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/TWK871200107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16cf5294cd23a110fe5b07aae0db1aff525360edeb4dc89ddcc3a78b552177da. 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/TWK870900201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247b53e606c04ef6457a55bf46791287d00e4b5c8115ebc1d099a644d296f38c. 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/TWK870900202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde98417e3ce368858d73601aae5c18ef61f04af3e94b92a45a5bc1c77ed289e9. 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/TWK870900203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf31f88505c8c39abd699d17bf9d7523d589494dee6c9dfba5689385dcc288beb. 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/TWK870900206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f2a2fdeb4e9f2c02449e6a069afd85c772e432d709bf5ef5508aaa6503dc65c. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/TWK870900207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dbc915f99d814b78acc655155d2131168a28be1ed13a73af3c81f9d6bacfe11. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/TWK870900208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf94897bdff61d4c40bb5d05a412ab402babcb1de0d3a90c543222b383e8aa9. 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/TWK870900209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x327dc771d09a47c7709e4bdba92e705ee634d1c4c10c606332cf35aab065adec. 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/TWK870900210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6432d41bc2a443322f8f6e86f5e2d5a500d752df6e5ce5c787fdc0fb36dd864b. 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/TWK871100301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21749da2b829d121e7934fb820b6c93f28a8f3ed276e73a5a522f573429765c5. 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/TWK871100303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29203f12cac90f01ad2eeaa5d6139620bc71594dfec438fed88e948dbc33e744. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/TWK871000601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb42e3cf2379cc8f4d90cea3db49fe99bacc5b11780ad7b47480333679ef5272d. 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/TWK871000102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ae7e712aa99396cb532d0244b94d855822e43a20862f22b77b424b2e4e6564. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/TWK871000103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78962555bc9c1fc191e7f9a913f19534580dcd7d0459022d88d0844ff6764383. 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/TWK871000105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9a13c0d101c593d856991828651751c5a3475b16b54f3605be825cd9f617d64. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/TWK871000108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24dec46fccc4187e5848555e9a134bdf1f4609faa8b3d906cfd493c9584b7f79. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/TWK871000110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4c5671d0a7b76f16031f16cb4f633f965d2256ad7caf29597d961813ac2ed5f. 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/TWK871100502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb571d75c52d47604246db9ca1d2530a61a9c7d3d1ee0383b7ff25d139d351d6. 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/TWK871100101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a6657f123b147bec8d6da7b109489019b576062bbb331b37a3cd7dd350c7599. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/TWK871100109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0114a7d00549099221b855d1969cddf1c62349a4097e029b8df2c147ac5565a. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/TWK870900501.