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 0x9e62cbfdfa13377652b4398d68bacd3542abed3f6748f529f18a12b81a91e895. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/821a3bce-5cb3-4613-ab2a-622455e9e693.json and https://artists.proofprofile.net/proofs/artist/821a3bce-5cb3-4613-ab2a-622455e9e693.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 0xe4fdff9084324be29cc7d5080a47fedea27f278b9be892f5defa3975e0b689da. 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/QZHNB2131208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a35b2a2006c36f20df574cb7623077f33c00979de64844f2998ff6e3242c36b. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QZNWV2252971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2df3b295cdfc0f8b9243b146ffcf4023f0e1c056fd933821244538fef5b2f24. 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/QZDA82102536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce17d52c7fe50143536d66ab7bf2336b91777d1269b2cb824840b5b98777c41c. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/QZMEP2233003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92010f37210483f1cd96a9a308890347d35359a717a78aa379a50c35f5c4db01. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/QZNWR2153559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c558984b7f1785cf8175844d8f32bd258632798788425ab65f42910a9c7063. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USDY41956206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f3198f5d85fb019c642e3733bcc9dcf41fa029c22bedb6a2b049ddca2ac5713. 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/QZTAS2445076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x622f39905e07d27b6d3207abffc177a75d4b43ef1fcc4d04edad4597f1ee18d6. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/QZK6F2461101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4fdff9084324be29cc7d5080a47fedea27f278b9be892f5defa3975e0b689da. 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/QZHNB2131208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f73e24a89ad03c04288b8b7399fb4533567ee6c31778a4f88aa4b40dc50c546. 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/GBWUL2477638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b17810bb05a3dc969cbb72ca683da4987ea1a44ef5bfde22002a73dab883d55. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QZK6Q2428141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe17f47295865c193078a2a9895ef402a5bbc00c54620bc6dc547282ac6390b0. 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/QZNWV2252974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6c4bc0acbf29e9923841d77729cc9b83e78830a11a7c1f394683ad2360f6ecc. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QZHN82406195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07002441357bccd73d96e9c01caac0b65996c5c6f681b7ff972b05f655c2b7c2. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/QZK6L2218952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae39660e1a1faebfa2f97695f6b6305dcf388c1a66de798c051880008e67e86a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZDA52304058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd40635a99ecc98aea0743aa008fd10f5094fd042a276526184d96424b5588051. 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/QZFZ42376288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe17f47295865c193078a2a9895ef402a5bbc00c54620bc6dc547282ac6390b0. 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/QZNWV2252974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07002441357bccd73d96e9c01caac0b65996c5c6f681b7ff972b05f655c2b7c2. Chain 2 (Bitcoin): anchored in block 960355 (2026-07-31T05:49:18Z), 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/QZK6L2218952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44b2bd9353255892047fbcd0dbf04d9600a163d93ca92bf69b1a082f894c505e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZDA42207959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92010f37210483f1cd96a9a308890347d35359a717a78aa379a50c35f5c4db01. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZNWR2153559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4fdff9084324be29cc7d5080a47fedea27f278b9be892f5defa3975e0b689da. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/QZHNB2131208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2df3b295cdfc0f8b9243b146ffcf4023f0e1c056fd933821244538fef5b2f24. 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/QZDA82102536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f0b480431a1153a56c8a789eeb05fbbdd7ecdf00283605399decba33a7f886a. 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/QZDA42159993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x865b4d7f496e446d3a3efdb204c665c8071a6cfd987a34b815c704cf1d5f8bfe. 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/USL4R2052486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19bc6e775fcbbb5b63bcf4ac8fe7c3cc3c808fa0d38a97712b641a3fcffc6af1. 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/USHM92080676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65619135788d68b0731bcce33bc918dc09805558b0e2edf8b72c33668d5043fe. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USL4R2074307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e70038baca4e4239efd5ec99f13649cbc427e31fe4b310177682896e911b2ea. 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/USL4R2074308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6d62479ee9351e27317bae3f8805542367ddfd93cf819e0b45141b6a2aa89b. 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/USHM82026732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef3c8b13ca7472283ae22cd90621d68f7a28c3e3d0177848b03e6571ac24370f. 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/USHM22007757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d1f2a30adfecde4b6fddb8f4a2a2693fc838434a18b8173a00d1845f6b6082e. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/USCGJ2020284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbdce65b44ccaa75bb55e983a37728eac8f99f716d061bb61946f0f57c4a8609. 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/QZNWW2461610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab272c52585e5d76bcf8dfa6a615b90158e059662ff979008bf49c65c22d8d21. 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/QZFYZ2278476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f81c19fd39106adbbd855c1f1db8df5c7b9c77a332e49821dd48d13fdd5d11. 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/QZNWW2461611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb600ae0788720f63aea8031cb949183961c75800aa931a6dcb6d87eb3b5b95. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/QZTBE2335367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0191ea51dccca83ba2d9387ddd0b278877be75bce4f2cdca5d1d16686f85e6ce. 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/QZNWW2461612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55fb62beb9b212d5c780583b4f34ce874f089d3682fbfeca5e491952bd677125. 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/QZNWT2369366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd9130e4377795260a1b7f3e120dfc40e038dbdc422f9cc124ae10f1de8366c2. 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/QZK6M2388299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb55750deae97c99625f74f2d912132631d9a4c3a119c13d2ea9d3143330d02. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/QZNWW2461613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x241b83cf4a5e109c70bb7504efe0c16b0b44d5361f058ee8bd913a171b9b95f6. 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/QZK6Q2299120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5162f35ab66b4fa820cd62511ba4fdd02352fa4c29909141efcdc8d5312088bd. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/QZNWW2461614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fd024026d39ab8964c2cbf5bb0abbfde0fdb884f49b70da4f5480973325e052. 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/QZNWW2461615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05e264d4cf42e7e014e8f8a8d67d29d8e8573ecfd54a72ecbf02d6ef94735f3c. 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/QZNWW2461616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cda7931261a14bffc2417c9094620d346f7f1bf54e022939dd28dd707e80c67. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USCGH2232813.