1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xe20fd5e1e1562681e43dc2dba6b7e73de9d1e0864d6d983f8ba2ffb200480046. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/15d36fb8-00ba-464d-9126-be519290c441.json and https://artists.proofprofile.net/proofs/artist/15d36fb8-00ba-464d-9126-be519290c441.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 → block OTSBitcoinBlock must exist at that height 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 0x0758d2488f201d5a0a90bf1e5ad66af7e0012fa89af0a7d73c1c6b8ee3e8dc33. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/NLD710100277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae892fdf09b4ee7abb2022ca3cefec817f2dd1c26ca7a6bc6b78aa6e46360e1. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/NLD710801446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5f6dfbf493f3052f2e291e0a24da0ebc5c4a4e0b748d33fd3c1d3ccfcaf88fb. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:06:48Z), 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/NLD711101973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae892fdf09b4ee7abb2022ca3cefec817f2dd1c26ca7a6bc6b78aa6e46360e1. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/NLD710801446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a5d15e100d6827c3d76ba418398fd605b7141975e2039f9597ffa3cd0ebe24. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/NLD711603554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc5e59e9492b5774e48a0706f99346b5c2521e108f673e4996fe4a13cae0050b. 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/NLD710100270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef0bdc346440731b18923a49f5975e909d8916c79649cc49e15cd0623bad208. 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/NLD711101849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd10bbd7a041a12e5999fb4fe91e48fbe5370b5e9863c22b47f5d7a0df4f7983e. 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/NLD711101848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f854271591b4f598a4f12042d1e816407960061b6a167e21d25e49c9fab8ca0. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/NLD712004375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a7722802d89092a6afaf12a2b4a9b5c342b224b36b3ecee333e01fcc9957678. 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/NLD711101847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce00750e3eb109522ef2377bdb453741e0861ce8bb79693ef24d692d9da2ed14. 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/NLD711101841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8de0969714ed305cffe3a9fc9a61f777e9c8cae68788f5909c84ca4622313ac1. 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/NLD711101844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd10bbd7a041a12e5999fb4fe91e48fbe5370b5e9863c22b47f5d7a0df4f7983e. 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/NLD711101848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa028ad389875b9e32a8336750f7b8e3c009e1d4bc7c88be2bf4d6ad6b2a18efe. 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/NLD711101843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef0bdc346440731b18923a49f5975e909d8916c79649cc49e15cd0623bad208. 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/NLD711101849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8626a3d5ae6bc83ae125c44e1ec5ca5c22b4d5b7c05ad0678f83fbcc36358fda. 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/NLD711101853.