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 0xf397e7da2b63a0511c83601721c18302fcef0b6034ecf86816fe45a7ffbb7297. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c48d87a9-8ca2-4c74-a1f9-1ee093d4bf45.json and https://artists.proofprofile.net/proofs/artist/c48d87a9-8ca2-4c74-a1f9-1ee093d4bf45.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 0xcdaa4a2b11fe313a26ad0913d7091379e331766b10d055e32a4903ca1714b439. 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/GX38U2532648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9267b133d86684a77803453698ace0e4831959ba2acb55cfbcd78ad60f82bb09. 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/GX89G2573971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41cf9ab9edbd141579504552c9edeb36db582ea030cfe7d371f1fe2446adae37. 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/GXESV2465761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a078adec0b53bc5b28e4b3fbf19f213cb83d8f3c66d47ad345c49032d5d3eb. 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/GX4R52404943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaac15834825099d763c6f8f11eb7d79b30fb8585f9d0e162d5b029577102e88. 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/GX8LE2417851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6993cdded0aa91c43b444067117832ae68eb7ddfcaf9507039c723ab910e775d. 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/GX89G2478477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x989f544ebd8d997b889b6944b5bf104a8efc8432130437ca4b9ba0f0d3684f37. 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/TCAHB2382864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x994d3d58d4c0fe449b79e0ab41494067e4be01ffcd3ebb32156ce79807b9469b. 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/GX89G2360316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b21402bad0361b3b783cb9f7cfc544620a4931290f6c58af3c3774955575cdf. 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/GX8KD2237869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x759a27b444b681db402cda6ab31a4ad90c6568a21f62155d6997e92b0b887965. 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/TCAGL2234289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e9ea987cc0eb49ff2aa054cc60f8adab4deca2fb0663b36ba97e69b42d6967f. 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/TCAGL2234292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf4b3cf204693877adeeac83fe150056cf3a8f7fa1238f42916f21210520d1e. 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/TCAGL2234294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1116befb317e28f996c94a8f1017f699d9e337e684ed45f5fc414922f9e49188. 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/TCAGL2234296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dcd0aa257d935840749e674d21e8e9d2940b32dc5995da7a718c294ba41c707. 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/GX89G2217208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09abc07513550489273a9456ad8ec88a9809fe67ea83da6db7c77239897d88f0. 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/GX5MX2240066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65bd098ac3962d95bfa50c1c83c4b815146dc321645799361ba58283ca97c2af. 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/GX38U2238358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e7912aa3ff73fddf66bd715f12f4f2e9b0b22742412507c34fa220740abd9e. 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/GBSMU0092353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7acb12d2716415e76849118c830a116e757d9a2f9b57688cfb107024dbdeb547. 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/GBSMU0032778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c24ae499b6a2dda871e24a4f47bcbbdacb55c7f369cc3f8f4c53c85f0c14a6. 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/GBSMU0032732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc110f2f6482edc031b8935121b7d1b39b330fffec6a72a5ff190a2cab3fb7f98. 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/GX4R52190716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d7e8017e98faa49a9549b9879267f4dffac3d6b8be377f58713f2dfb019afe4. 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/GX4R52109646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd579ef1b9c10fd1da07dce148c0551215a2ac4f814e7cb13466eff88c42bb4eb. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/GX3HH2158578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c179bc89d93378bf419fe3445ce8aa34ddcf17ae0ee39004de0ddf70646c357. 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/GX3HH2129581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb757f092f8fd1faf0fd8d545172b65874f46b3b5703498ca0518e6340ed32b37. 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/QZWFV2463736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ba0da4a8fe4add35955cfcf1b9b2f44e0c51631df5b62edd948c06e635a89b. 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/QZWFV2463740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d315936ca21d2f1e2b6ad1ea70bdc1d92c0e5ffc395fce9fc3788ef2ffd43e4. 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/QZWFV2463741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6bb4b255df0855595963a7f8d5994c543e8ce2c4913b6772a08ff57bc495a97. 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/QZWFV2463746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2d47ff98e802f5c980c40ace1dcb0b565f6dc146f821066a991213bce020c2c. 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/QZWFV2463749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x090a8b3c274ae9605fe2738e6004ee40dd182b83220885c3ac559c9ac67e3856. 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/QZWFV2463757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ea1bcfcd9d849b75b0c0326a6af81187fcf80e78d60ecb91ea338c73421d0da. 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/QZWFV2463758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a7687bc9e87e6383b8e5cdad4ff431dafecf488577d41d076172bab9d42d546. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/QZWFV2463761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2d47ff98e802f5c980c40ace1dcb0b565f6dc146f821066a991213bce020c2c. 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/QZWFV2463749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08b37bcbe6cff7f4888d9b4932e73a15e065d27e285325f5bf17a905b37685c5. 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/QZWFV2463764.