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 0xb281cace66b71506c32bfc85210a41ae336441124ccc3893daf95e265da045e3. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/10e7a105-65f7-4494-a6c7-b13e3cdd7439.json and https://artists.proofprofile.net/proofs/artist/10e7a105-65f7-4494-a6c7-b13e3cdd7439.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 0x768da51265447a15924e52b7af6f1103a90730f807378d6c41ae79ab18b8833b. 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/TCADT1891666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25945ad99d2da2611a4dd030c7a4334d31e5c2ee2ffd8b3ffae897c39ab397b5. 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/TCAFW2139513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9149533c89fd41d5c605b7338b3448e2f6ca390c8ec0777f3e45c76d4e0a783. 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/TCAFW2139521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee917aa21182f8bc176990ebe711581db8a6d2540f438a4d3fef1ce7a83caefe. 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/TCAFW2139526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92fb4066c5fb14163d3abbdb52c7e4e233f6b579a9143652f183815165f2a43a. 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/TCAFW2139562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d7ed2bb81f108193ccc65e9cabed06bb92c02b164f1ff93a01c6aecdfe03b5. 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/TCAFW2139565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7392b1375c6bb6bde83347eed1402d76d6dcae2a799d3680c3c294033f4b90b. 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/TCAFW2139571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fad2721ba259eb0d48c57dff2afc89fdce2f3f4aa32be4268e3225efd83b001. 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/TCAFW2139575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb86b3761c88ed81b57a905e962c238c26be6580a2ebfd71631bc9d83dbcbdb34. 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/TCAHF2321615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b59fd55f4232b83d738e2077c2454369d704557c5999002ae194434d0c8015a. 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/NL5XG2200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49fac9e3f25f3ff83e60285ce06f4191cd06e9bc29e60d95d1de40b443cc76a4. 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/TCAGG2212091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67109d4bffa59a8d0398bf7c3ee3267f7832929948043c95aa73dbf4b0a6b022. 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/TCAGG2210171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a5dff79a3ae39665623480dccf549ead49a6694d23b27540659e0187e23597. 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/TCAGF2223351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7531e2a8466b099786275a5db37a8e72fda3ef6401ef319cd4c58c66f11d191a. 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/TCAFZ2257448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x862e6583f9723d412bd58b50e8043495c36e132d986e8fdc784de85e2d082aa1. 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/TCAFY2186987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2df7a53ca6acf972518549b681117b0f3bc2b8834116c6da2067b1492e862bfa. 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/TCAFY2127391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x444125eedb8cbfaa88b27f53ad10e1e9f11df31c11cbd0c26cea42183230f7be. 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/NL1EQ2000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf0b9c99a0154fb45f9809272556757da44afd72f2d8215c4d38519f517e8608. 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/CA5KR2159185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa11d4be186b82af51fb80ff33a31448db9d9127cc003189c37448bdd26dbdea9. 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/NL1EQ2000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe09fbd93b8fe6492bee9d9b584b26284255cefb8a58a7d0a8a137f7669136486. 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/NL1EQ2000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfac3b145f66a3463a69328b188c4293370d64fc50c5145d2acce34c084629cb4. 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/NL1EQ2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfac3b145f66a3463a69328b188c4293370d64fc50c5145d2acce34c084629cb4. 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/NL1EQ2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2da3ffb6407f7aaf42554b2bd7956b28593a2d5cf3e45d0151dfbd4161b502c. 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/NL1EQ2000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e9d8b5aa4c24df5f03a3628c979a1432b5c507c2345e5ea943515b5adfc4e04. 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/NL1EQ2000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f75b7142b6368179b432e12d669fa3a355572d3c4aec45e791950f887b41296. 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/TCAET2074658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84add456281636a0274ca493dce1bc4e79330e66117f02d06de25d4e768b784a. 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/TCAEQ2046495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40942ae48affc7946af2145429b1db3465d945d84a194a7bbf3b36cc78690de9. 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/NLB8R1900102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfddacef512a110a68eee1ee5cff2b5241dcd816048d39add9fd9f42576700fc0. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-16T13:54:36Z), 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/USZ4V1900246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6794250adb947bb07d6c3383ae4aaabafc418b73ed1efe5bea7cf020b10d1b38. 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/QZFYY1943631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5324fc9b4230bab2870e727516ebf372e671e8a857c21ee251431d01e003cc0d. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/NL1EQ1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294d2e1fcbaf6ab097a4a030bea980a17f0390afdf8d87b041f12b4340016d97. 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/USZ4V1800160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae5abc7cdfb4d635f9467156c785d0b89defb856c6a3d8d14827c04b1ab920f. 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/BXS381900011.