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 0x78646b79d5a3f29f9a3d16b406fb50e0f643582cdb658e7a04cc9b57fc233194. 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/c86bb916-a029-43e3-ad7c-50c32a1b9a40.json and https://artists.proofprofile.net/proofs/artist/c86bb916-a029-43e3-ad7c-50c32a1b9a40.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 0x5c78885f032c3bbc4c79289a22985876ae630f41565e8bd49f3273842ec6ba52. 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/JPPC02312841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2fa552271d6cf8b40e84b7051870c578949106e318199783167fb4c2585b520. 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/JPPC02410322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e08dc0430f9ef5a978713bab2ac15de291e18b6b164b2fa220c6dd5c4e06b02. 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/JPPC02410323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b5fe5acfc81987457af8318e006cd5529dd2658694ed5162d3ee9d92914908. 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/JPPC02410324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x954785b885ca819e7168015a52796e32dd1199f5832a731b4aecff162b35f7fb. 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/JPPC02410325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb79e5055e21e8de2d205c203a5f7df308c8af12c76f372e4a3d1c34042c42ae5. 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/JPPC02410327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e1b44cbce2e06ecad2a9c531bf818b20b8b70784f24adbcabf4a58ef40a6c2b. 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/JPPC02312581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd5f6a509b0eaf4dedaa404178a588a84023491ed379ac50b3f8d3fb73996c1. 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/JPPC02410205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6df18dafe316cbdc7f45bc2cc7164a8d6b291e9e1e7351724fd8818e6d477eaa. 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/JPPC02410206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1860d190a66d0e96669ba6f4e8b203b3526e5fe11a937d8358a2154265c7c34. 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/JPPC02410207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207d821e29111a31b778f85d8d4b940f157076b87f2b76502d1643db18e6a5e5. 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/JPPC02410208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c98575ce7cb89ba2f96f3d63e5663df8ca01b8d02fa0a7960b386bafac1c9ed. 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/JPPC02410209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee387bec8e1a61657c2398c48f0f89ade5583b8c27a1d1e0b91cb96c8bd1019. 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/JPPC02412203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3e347e34b79dc8d259d8e927770700eb22615846b59ff3eff0cc1edf5b20178. 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/JPJ222403160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e1b44cbce2e06ecad2a9c531bf818b20b8b70784f24adbcabf4a58ef40a6c2b. 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/JPPC02312581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x768dcd3b1924e316d83037442601ee59e76b0dd04877bb88f21dc668a5e2393e. 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/JPPC02311661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e997c396e2354180a9b1797b0b1071c6332d98c57d047484fd9e8a74d73c449. 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/JPPC02311315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf27c36171b89e296edbe1935717381fad76043f58daa9825326bdeb7019a36c8. 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/JPPC02310872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd32fba2c1e6e6cfe6c31c2a50f4bffea49b57def9140608c66f31a4ff91cd472. 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/JPPC02310307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3823ab63d42f0a30d9194f6a96e1e090e3bec71273a571ca3da2110292563a. 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/JPPC02213187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x252433726887a19c630c6d7441ba962bfd1a4fc88f8c9872c6c9f9e71c0fa032. 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/JPPC02212775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e4f49fbbe16cd992b9437d8a8ee5fdf5fbd3b11a72599ff93da45c001ed415. 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/JPPC02212234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe82d276b44abba027d717a3e8f7f1b5be4eb10333191358b3aed949314392bec. 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/GXBAV2563063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x362b13fbe15d5baeb300a899bfa5190925d8829e5c06e9434a31db5f3ec6d70b. 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/JPPC02413055.