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 0xcb235904d843ad1050fddc297366ccc1197602910dc5b535f90ad17f1fa30907. 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/6d6143d3-2faa-4694-8d9d-396ce85bf9f2.json and https://artists.proofprofile.net/proofs/artist/6d6143d3-2faa-4694-8d9d-396ce85bf9f2.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 0x2129c76b09759c71329e27e59bd63953476824898d0a6c264d0b48f82f7aa66a. 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/DE1BE2400052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5bb88bc11167bed2d4e8f24b736522fb3ec11fe1d9ac1938a713089c631f0dd. 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/QZHNC2463052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd06fedf91ed2c60c395dd8f528a8f2172f5da766b1180066e6dda6d95a7e2f. 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/BE5KW2310067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dec94f36e2704155a22cfc5b6d8794eb470593efc593680d79805311cb1b7a1. 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/QZTBF2387989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc93226e8008226c256c741b25767fa5747b53e56c78f6a61142806389cc982f3. 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/QZTAU2339325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ae72c6752012bfd64fd00b79fec4940350522d57244d4941dbfe516a062f0a1. 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/QZNWY2354366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc27a4524daa8b959e6e47af5b089a88f4a2c0fecac0ebf59ce24deb0456bb15. 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/QZHN92323169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x547a22a99defda76e5ab8f9fc3b30eac8557b22012fd71d8c9662183ec40ca16. 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/QZHN92320842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a7dbb52996e83270eb1f563cdb3dc328c546709b05c5533946845ad1bf9e82. 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/USQX92200579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a76244ca838888ee5a69f1f4fb18a7bca3140a26eb1a0ca9696b1a925c0612. 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/USQX92104961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x465378b053dc8acc8dcc1389b5e95ebb8227be2bab41ee4d26064675562da670. 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/USQX92101399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01514c36cef6db1878683877279ea5ef12c34bd68682e171d8b9b37cc7bf7ace. 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/USQX92200115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d2f8c86f0f59d5d4170404503acd753aae7a92fd4212edbbc29ece3c5c6831. 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/USQX92200434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x510d719baf5eb34f9d736322262d2e23472f91af17a982ce4177777101b5a361. 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/USQX92200769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe425ea90508d7c57f97fb6414c003969ec53f5a5ae3cbec4e558780dc8205029. 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/USQX92200770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a3b58851bca9231a2f39f4920ab5f749ca019ae0130440fbc4cc392830dacff. 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/USQX92200528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1066533c5de6e82a36937bf257f69b83318791539e4575a6900af20191ede650. 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/USQX92102722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d9c3c05ecc4a7ad66d95ca100d64f5029452bf8107db5b77eb87301c701f86. 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/USQX92103403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb8a3c3fe1b79bdc55a07055b49264573309285b0a3d21cc93308358933d4ebb. 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/USQX92102149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc39ec159ee328a170023c8f50719a60d7ea9339e067268041f86dd435c06bf1b. 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/USQX92104372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04722753d06b9262cadd144b999e72472d5c89a023bdee32837a000584bd1716. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/QZFZ21993822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5dfb96cc4faece0cacc801e565cc6ea3fd5481a30c1df1b15ff2787b74038c. 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/GBKPL2027449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf797b2b6df90bc57564855ced4419e871ca6f9feb6e42635e4cbd8cd33fa3fc9. 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/GBKPL2027448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2457816b153b04865db135994e944d4e042f440e806f9b41dc657a244b1779ed. 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/GBKPL2160405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9490ec06fb163543a660bdd3bb0dc76ad5502994631606f1b8c65695ee4e9af9. 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/QM7282305553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b3945bc47bc6a0d7d188f74d3965ba4866978f6659ac782089201e401239de3. 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/QM6P42361749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e63ddd5934c82077d8c1c83983a04a61e10fd4fac06eff1815b34035d63a47. 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/QM6P42355418.