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 0x4c7a26380aa8e9176dfa4f3c77d2fd0dc05f8b9486724dba66bd05a8d4429dec. 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/0208109c-e7e6-41a4-8fd3-9f346d5f2fdf.json and https://artists.proofprofile.net/proofs/artist/0208109c-e7e6-41a4-8fd3-9f346d5f2fdf.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 0x3b46eb57fd7a6512ff15c801545a45e2427df02e22108aa585bdc9ce1e2b8f64. 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/IDA432101713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a3c4f43b8bc01006963e670ac7c29734fd7d2ce908fb43d9029d9852b39c624. 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/IDA432022557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276a4d7a3e853e173429f23762b6a0aff6f4de68efb566819f2a455bd0a52954. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/IDB772101739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x144c23cd45bdf3b62a769df5b5052c558496d9ded9b90ce5b71f1faf37a72d30. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/IDB772101748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b5b066529bc3d5c3ce02038ac37b30f041de14a5895750b38b6ca2032ff0f14. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/IDB772101760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f1b67e46a8dcce0d02da9d2ac0055269b1a209c6589281eeeaf69a15cacd45d. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/IDB772103340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29682f244168c96ea4e8ee7b1edffbe0915d308b690f85031d61297b1a16a0d2. 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/IDB772105120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b70326fee49bf00f882314d52d0508a3ff654e63e7b1786d138d0ba1e590163. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/IDB772105149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x132e8fce9116667aab13520b750d23388f3bbd22c60534dd4417f64c09c6573c. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/IDB772105589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e5c2e0814c7eb6bfe7d49914774f5d839fbf6a64e2904071ff4a124dd6bb74c. 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/IDB772106080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b56f381094bf54bbf3f424b10a2da02cadac90d6d22784d0f6c103c80a9a218. 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/IDB772106092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed8017c9060234a65342f13eecc95a4304e6f65b87553b38195fd17b0c4c43dc. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/IDB772106182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01489a78b55ebfe91392510fb5a085409411b9bbc57ddc9888fdef46f0534a24. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/IDB772106681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x194a790b6be025eeccfc92ffe735b6e5f559e13cfe1d482f2eabb153e78e0e43. 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/IDB772110126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x590a6cb6460bb34f9c671e9ecacbdeddc6e6ebeb91e4fbc24738acc674463e20. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/IDB772113721.