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 0x714fa10edfd5b4bc902d448f5503f348daae610d43eda5faf3c4bcb51a662d83. 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/08b5f256-d31b-4f16-9684-c5af7797909f.json and https://artists.proofprofile.net/proofs/artist/08b5f256-d31b-4f16-9684-c5af7797909f.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 0x5d1ffb0b36b2ea54655cac03991783786cd7188b90549748e21343d4e63d29d2. 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/FR2X42209454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272911f22dd7582a61b9389d16ca3fab9247545b0305dc6948389ef8f03378a0. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/DGA0T2460647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2091cba747a6d09f10fe753b764ea850cf170a68abd121e21c827917d11d25c6. 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/DGA0H2416208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c96d28c94815ec391772e62d4dc90889efd0af51041fb8065d188edbc50de3f. 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/DGA072426794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c86cf4478d9ee8e639f88e3ddaedfa4e6c708890b13c9b2ffe81e32a7d19613. 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/HKG732445498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9fa595581a6494672f148f09e04f2da45ddf9bd45e83a0dec4ff57b96e6c3cf. 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/FRX452483887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x234c9dadf581f5d6ba19b247033d94cefd911f3ffe1efe9096461bc74b1121df. 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/FRX282439057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eb3d5e1b2608935983cb032f147c295ef86768c3d1f70de33c81d7a84cb9e98. 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/FRX202461002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38154ba846c392fa8082d82bd6ae16c6e0333324366db309919259aae81a555c. 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/FR59R2470970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47fb9bd3019bca77407c06300c460a39b1665234524d968482facb6380102957. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FR10S2459053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3eb968adcea24cbf0ea0655b3f5f1ef5723228cb84e09ee91c6e4d87c3868f1. 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/DGA0R2304777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c3349410a402d457367521fd1286376a5afbb21b317852cae9e1262771fbcb. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FRX872434321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11ccc7143567b2444ff098deb3349e2250e708093fc42331d5454efc4cde8ea. 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/DGA0P2305655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3727fdfdc5807e401642273dfebcef8f7446a5c30a401af504b7071cbf0f174f. 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/DGA0H2310666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a652006f17ded3f5443e060cf08c5c81b8b753ed361e1a37dc7bde94479335. 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/DGA0H2318532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca0601a6f2429076d70b41f907467d092c678cd4753bcab452ecc6fa5f3004d1. 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/DGA092210958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x850aba88055df1073550457cb3958c72af542ccfe4f0850b93f46cfe4a3ad9a1. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/FR10S2255470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2389835774955be787ecd8c510dd10d521ac79d94835daf6aabe2ac11e445327. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FR59R2385834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x779be404b03cdbeedcdb12dfbf638d35eea1a36eaaa3c2cd6ac8f053afce7f47. 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/HKG732137872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0478d7ef1e25f242295c7dcf3b1e4c21a9dc85fd0de8eeabb8f361993fbe3bd6. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/HKG732137873.