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 0x108822e0531ea32fcc6cf158d37ff57fe9d187b0237b10babf004ea093b3b635. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f04bd5a3-1ab9-4a77-b401-5b9163e015e7.json and https://artists.proofprofile.net/proofs/artist/f04bd5a3-1ab9-4a77-b401-5b9163e015e7.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 0xb35948fbc2a688f9df4c547caa20dd367c62f2a28f5754d114cf38aa91d42cfd. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USCM52400116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaf9136fd040da830c765bd8b609bedd7c84c487e13265732015522db64c6706. 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/USA2P2403998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd60f8feed1b1e9d6c804393157df5e6bdac154e07b4d93b86294a4730dbd4aea. 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/USA2P2362236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a10d8b7491e296813b8dc3a0989da2c56c599915b67c17cacfc446042c164f. 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/USA2P2347820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab29737ce7d8354ef87d3891d2bb0350c750e1b1537f3532c2c9cac7a47b13e. 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/USA2P2336556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbd9541f39e0d24eec4a0d749fb22a4d99ab5fcad5bb01d181f4b7650cea6a77. 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/USA2P2322468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44abd0937bc170490517028718f6a2b8e1a8eb826491055cb1066fe3c7fd7848. 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/USA2P2315947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb807060f0da69ac6809b4078f34cd78336bde6be82f2aebede0179c915a8b859. 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/USA2P2304420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x533e52516083dc3979829e7ca2660d5a08194dfa0f401267003943218450dfc6. 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/USA2P2232246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b20ad59e9a9c150b4fd71204e282f8bffc5c69fcf1983b69052a751272bba8. 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/USA2P2232248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x505b0024e62e542864b8d1a2740cad95f3a6bc3349ec865c302acead75945874. 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/USA2P2478408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35823453f868ecc85948b6cc7101dffebd5899b63ce0d52638f11b863a62384f. 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/USA2P2478413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0534234f2412a30176950af9761317a7afd00664db27016288e27b08d20d414. 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/USA2P2461009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecb950236f048651b474c7375520b947d4ae4f63e321646376c8ef4f53e18a06. 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/USA2P2478417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b5e6a3aa32ab5f0c27a598c07dbd528dc49b6d6768051cf6b9c19662ad5aab5. 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/USA2P2478418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b263f7bacbe3a290fee0bfe76277038cfe0d03c6a9b29ff572c6b06e249b034. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-21T22:50:43Z), 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/USA2P2478419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cfebb62d1c263b980947cd536d4de5c11c1f67def23072570a8111537f93db7. 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/USA2P2509518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x948469cdc199db06d6a413835248efa9c60a7f07b188512c90d630bfd0427147. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USA2P2509519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c0e8d03703e090b66c0cbbd4524a12d073f1edc3281d6cb3dd293ab24156e3. 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/USA2P2463665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0534234f2412a30176950af9761317a7afd00664db27016288e27b08d20d414. 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/USA2P2461009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b73886586558500d5ff54bc5e00faaee5cfbad08969350c084e6e7e072b8849. 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/QZTAZ2449320.