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 0x988235c87a06c89aafec243af089f814fc351a4bfe0272a933e05a5336f18b22. 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/147bcb7e-248f-4e23-8927-0d5c2bbca41e.json and https://artists.proofprofile.net/proofs/artist/147bcb7e-248f-4e23-8927-0d5c2bbca41e.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 0xbaba3a42068d42d027ed71d704c8a9475600c21949d4bc1b7605b3bb98de2acb. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZNMT2321915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf4b312f1e2e99d3c6f73a75a9f8eddac90f055287ac98622a91479b8313392f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZMEQ2366356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x831b215e0bd3ad9882a1a6b458d9eec6f85711dec5aea662c2357ca5218552bb. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/USA2P2502482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x831b215e0bd3ad9882a1a6b458d9eec6f85711dec5aea662c2357ca5218552bb. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/USA2P2502482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b6361bd486f6557518f3bf6ebf4c7284413dd0c2900c93099fe6c608c38001d. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/USA2P2502523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51cfba801beb63c91ae2860aba6937dd39643cc2974321373a15e6d4fd1d4fc0. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-17T00:13:21Z), 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/USA2P2469713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bae3b122f1ae8693c66f90dfbf9bf410bcdf39d2b68f321d16f3cf2fc2c766e. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USA2P2502524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x981f60cb3f26f5612cfcc77adb1a4925bde22bdcd520568c583826b3f97921cd. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/USA2P2502525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86bd2671342e013da0f45757c6cf3447f6decd934799d5afcb16cdfa1fa6678d. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/USA2P2502526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d75dbea8b67e8261c1bb3a5487aee2b8cd4950b54038285fa32d14c85ea7598. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:45:59Z), 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/USA2P2502521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ea3b344cb44fa68c32e801d09b2c31b414343b7eb642ee3257a0e46a622bac. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:03:32Z), 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/USA2P2502527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ad45bb534f921f38f35b1d6a01aedcffbac7d96c2673987495698b8f35c30d. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:18:10Z), 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/USA2P2502528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e0bd1988059ed8b36093984fb50cd3700e7a3a16e65ffbfb2673814a5dcdde. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/USA2P2502529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c49cc24e20a85ff126fbd483a4271b9b50933cad9d121c22df84e0dd3aee27. 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/USA2P2502530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8230c1c4afa3f2f05793d21d3c355a06a3ac43c46d28c34f4a07c75e38a00572. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/USA2P2502531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x337fb989b357a114469ec1fdf6d6a474a36133163b792b070ae1bd2fbc7fa86e. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:50:09Z), 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/USA2P2515802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dce05aaad3254ee8e0328e57254b72585e56ec099e02989a31a0957615d2f95. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USA2P2510219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8284a730031d816ab0300c64442cbe9544ae8dd2548e7aa9ef44ab1a44b6f5e8. 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/USUYG1704640.