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 0x9f6f5cf4889d61e1920813eb9d50d2d161c10e60e1f13e2ee116ac353650ae3e. 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/ae770d35-b2a8-437d-9394-49604344fd2a.json and https://artists.proofprofile.net/proofs/artist/ae770d35-b2a8-437d-9394-49604344fd2a.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 0xe942a5c56247bed99579e84d54c78b251e77e9b99fe020b2e9fa0b4fc5ddb9a5. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USL4Q1859045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x149c57bd5555c1e7815437ed00744298a40a2706fe1a3169d1b2eb3fd1438ef9. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:42:43Z), 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/QZTRX2200120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcde387bf6b0124a5d69d32bdd6f395634526bdc81d748dc0adf93e5593198bb. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZTRX2200129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0224473cbe7271c57d5fd32bcf22496a078882eab43bbae804bcc669130220a9. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBWUL2138432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a7a0da15768a0670fb1b10f2003dcb8a5e22c3ac2a2422855766916cb93b37a. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZ5FN2120180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe302c6f2afc78777bd756c933abaa7dfa59c12acb1f19a81432d7018faf6182b. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZWDE2425057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb1966f71bcfdb163cd1980eb964511777d1a2ed4350aef79585cf361a093922. 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/QZWDD2366283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb6f319035fa27c475f1f7708f0e53278aeffc6d8c6052ef0b29178590f4fec. 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/QZWDD2427490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd46e2d1a17c04214badfe4249f6527cf9d6cd93c43e3c11a5d96f5d0219055. 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/QZWDE2494107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb50638dfdabe3bb428786b289e22358b081e2bf43581a8270a1be0fe1777019. 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/QZWDD2427505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0224473cbe7271c57d5fd32bcf22496a078882eab43bbae804bcc669130220a9. 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/GBWUL2138432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa784947371f449f0f7d5b801e28874cd6c5f898682675da0b6f7171535d5833e. 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/QZWDE2494121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce985f79abfdd287b52a32f4ff644f845d26ce2f9a740f347cbe9e51509355a3. 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/QZWDE2494142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a7a0da15768a0670fb1b10f2003dcb8a5e22c3ac2a2422855766916cb93b37a. 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/QZ5FN2120180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa60419188fbbe6155fca1325c517479498b8ebebec4bf9416a6a2e0e169a76fb. 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/QZWDE2494214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0d7fbc1a545317605f92438252b645c433e03045f4099346603c9e59c39da59. 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/QZ5FN2033371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f94eb3e19ea29bb11646963b980e4065878518388b30e95ebf56babf0d6e8ce. 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/QZWDE2494281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe302c6f2afc78777bd756c933abaa7dfa59c12acb1f19a81432d7018faf6182b. 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/QZWDE2425057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5877584dbcfcbe71e84202ee986c0ad5a3f94b7d2bb398370fa2a822edacbb26. 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/QZWDE2494302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd1cff1eb03a61af891afc7f31998a799938f52f5122c76bd23d52ad2f2a5c2. 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/QZWDD2426911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc94edc97f5a57092aa951e7c0590b319c9d35557133e6a37ca6b18108c852b. 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/QZWDE2494326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76542271232284a82a2bbe4b112030cceab6da1239f5483af4a975604121ad29. 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/USLZJ2123021.