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 0xf12ae552011b2f4d7c243b85dad00dcef73725c7dfe1711b800e458c941ceb89. 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/3833300f-236c-44b0-a6be-0ff2485cc49a.json and https://artists.proofprofile.net/proofs/artist/3833300f-236c-44b0-a6be-0ff2485cc49a.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 0x81e2c328458255c4f45d175ce65e688350b90420b97a17671a3015add32c6a17. 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/AUBM02100171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x106ff1b2008ec172e55e4e9f278219987eaca7fc0590159181d5fe1d5071bf09. 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/AUBM02100090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22f889a9fc90875bf3c67428b4e5970e192f9fae54e9a2f1ccef64277904416d. 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/AUBM02100172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa43e77e46ddd458896dc0c3371ed46665dd774301c42e2c1f1743851fdfe0d12. 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/AUBM02100173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e2346939b6b30333eab10ea9ee80d6769f9fee48164e4ecfbe03bee6de82178. 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/AUBM02000862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x846d24c65c201f4a3cfd5bc8caf7a8c2c70cf5257ec8d65fb8dcf34d22b67618. 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/AUBM02100174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d5c0e730a81e74e982806259ab9a9bccf96c1e547d0a5a65a16fab51d6ab30. 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/AUBM02100175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa25d7e908716b1f11027aa7f3c368648e8ab568693df0b638e9020055fad7f47. 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/AUBM02100177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf234ab2c75d8a1a86be859dcd7972c9b38e57b85274324c0450d78c88a4a9d6e. 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/AUBM02100178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf46eb54f39659c885c5a2c7207f759f183e14da5b1c85664b2f094b3acebd304. 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/AUBM02100176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ae07ae923e5ccb785e3830f610a969742c2be6810dff9391e36b5988c44990. 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/AUBM02100179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a250bcb033d6d2fc4e83cceace71f85bcda5137370f2daedef2b6e60226862. 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/AUBM02100180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26518b0fdfa3870c29ed5b5807964becacaf320451722b5b4833cccbefb001be. 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/AUBM02100181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d39aea5efbe91d51d8da12d6c1af21baf0fff8daabc30c693468931a4baddb2. 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/AUBM02100182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x000cc883deebba286f6a1ba7a9bf56b6c2b63f1f2e37f270b7328b1e10244482. 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/QMFMG2370074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9071bac81b4b624d541903e69573ba216ee25790eced3849ec49a6c91219275b. 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/QMDA62315238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24763e678f2623726bcc67dc2447ac00df537b4df996d5ef6adfc3efc0f98cd7. 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/QMFME2313131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24763e678f2623726bcc67dc2447ac00df537b4df996d5ef6adfc3efc0f98cd7. 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/QMFME2313131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9071bac81b4b624d541903e69573ba216ee25790eced3849ec49a6c91219275b. 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/QMDA62315238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b34cfb126c09256f0a764a1431ca517f240417243d58a95e9226820d0f50d6. 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/AUBM02200253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x824884d1f6a71317c8696af60ffd4fa13bc13fdf4a76efa143b813f275cf8706. 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/AUBM02200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c5d08b4a2f8abd2591532add59992cb69d01d475b548246ce89fe2e3aff8df. 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/AUBM02100092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x504f2aec27c1ef130dc0104722f88948b898a163b445c6711c793879379d96c3. 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/AUBM02100093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c5d08b4a2f8abd2591532add59992cb69d01d475b548246ce89fe2e3aff8df. 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/AUBM02100092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a98fa45d975c53f98e339c91d92cd6c6152d07fd46596ebbe70e611f9407601. 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/AUBM02000089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x995f5f4122b9b3648bfce8713cd2bfb2d7ad258a93ceef0d02ffb5f32b07f15c. 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/AUBM01900108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde0890d2fa56fce3561befa9ff2d56afebc43bca341a45803ccd50f3e7f5e2bd. 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/AUBM01900052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a1cb9fcbb562083e005b2f55adde7e09a2dba1b69defaddaa56f751a4086eff. 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/AUBM01800407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce48db27f71a1a5ed4ceded12fa14b91e308255294821cb791f884f665faa80. 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/TCADM1861420.