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 0x126523ae2873478aa968dbe4447f7446df60510bbb03e0d3e55fdd59336b66ac. 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/78b85f6e-16fa-4af0-baa7-bb18919e6ca2.json and https://artists.proofprofile.net/proofs/artist/78b85f6e-16fa-4af0-baa7-bb18919e6ca2.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 0x43fd62de34ca00982109ffb77a4bfd87e10726cd344a52b1735783b055960f51. 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/CHF032412091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05e417a5081c4ff50798817c27315f156372401ebe2be71fd289aed5ffaacec9. 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/CHF032415677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5413df51b654fa357632d839fb926525df388eeec69f49ca26028ea2296fa6e4. 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/CHF032414339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a2a57082f8ef101921906a27b78c17b5adcc61742bbd770ebc01c87cf29c3a0. 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/CHF032413148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80d1f7b10dcedc5ed163b8a85e69cbda6e25eeb1cc3e3af7d8f44958cd274feb. 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/CHF032409156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29fbe365a29d381eb91010815773ed47a5ceb6c2d74de97aeb93aff1ec24eb3a. 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/CHF032409157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2676b03f7527326c5068805cdba4393b0a1f648f247f5b1b80919e404ba16190. 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/CHF032409158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90ad82723ed9f7e40e240ba3011cca2956786fb7ebe1f915b912a7c683f7a711. 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/CHF032409159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x735aaeca6c908c9350171f3f5e82aa6f7818ae48c3b0deb4b9a42930c794bbb1. 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/CHF032409160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e5876dfe0a56ea176aad1b3d38281d04bb004beed9a6db625643b6414e145c3. 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/ING212454381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa388ad2de671e34c542f826888c1169c70ac7c52f3b4f68fd177d27ddba471f3. 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/CHF032408384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cfbce7adfd8476d853a12e2144a09d31faa4815f77e51197c8a3fdf71caa856. 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/IND832201872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x559a03fc93fb207b2a4e21493179f47e3f2d772b58fd269d2125908bd4b25da4. 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/IND832201826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f09c705b18790dde3d12dcfc5cfcc29f38f2d7c41cb15f1163a2fd3a784289f. 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/IND832201721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86b748ab4b2a565c29b3e82a8f0ebcab0ac3d1e447d6bb3762615fe8eebe5b97. 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/IND832201673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a6cd662f3ddd013013f599705387a2c61c1226108a0f1be1f28ebeed75b36d2. 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/IND832201627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c56fc74cc96e67a3584067c37b403000da1411820b88921b1d424ca3519d22. 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/IND832201575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b30968f0c7ad732366b596b29953e2cbfd89666fe5bfcb124adb52e6edde326. 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/IND832201481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cfae1f47588d405739b607a74d519341aa3009992c39ba40092e2ef35dc2838. 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/IND832300368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d8d2c2f800217b3f24550177eee8cdc759e422b10a66e481ad92137ee15a067. 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/IND832213099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dca49bdc6bec0237fb23c42fa59986ff7e30ff5deebb77feea377b4ea81780f. 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/IND832212351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed2a00a83138431eb4fbe9797e4c7326e3f15dc2faf01551471e8f9946b02616. 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/QZK6M2475839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7194878975c4b6f07de33e4ea725175fbd7aa8702b913e32662761790afeadb. 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/QZRP42310899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6273f36661625387c40f508633405974d03c9b5290ac2666d4e00c5f9f3502d. 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/AUGBT2404914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e87631a4403c6eec4d6777735542532bbe1cc36f83c0f6cd1396f2723f85195. 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/AUGBT2404918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed466a35615ee183d6b8eea30e407d165782d9a6fa2656a9b0720eb72bc37b9. 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/QZNWV2486596.