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 0x132326f2616db81aa4f5e977e8853233943eb98ce46d3a468c1dea9baa534362. 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/dd05e9ae-db2e-4d0b-b92e-2c4fcf301349.json and https://artists.proofprofile.net/proofs/artist/dd05e9ae-db2e-4d0b-b92e-2c4fcf301349.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 0xfd04e1fc84bad07c4ce0d42f980ab096fe6c8391bbc13044518abe2e87799304. 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/QZK6F2113445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf10f1d99cfaafb2a114dc42cbed4632f376eb6f27c41be9f3e56531ea30e0d68. 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/QZK6F2113446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4250dd7bbb57815066fdedee8b7a5804b0bba2068d311891a858cf34d06693. 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/QZK6F2113447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf102145ee17692009003dd6ec00e41f86f984f4438407e22d9e3bb6488a556. 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/QZK6F2113448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca2f74b4a21031212ded026b68e36e50585a975d54a405da5606625f10a1b86. 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/QZK6F2113450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f36f536b0cde661363f4bf98b8e5b727be6481fd4de4bfbc7a49e891c34e1fb. 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/QZK6F2113451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d57d80e6be0d8bfa8d80902fcbfeab4ac9f2fae98c1303f54db834c250bdd61. 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/QZK6F2113452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x984890f87df23d008d0e65362a54185a69fb75352d6b1cd298fc3f2e6bdf1023. 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/QZK6F2113453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee6d9f1199d7bbf1e670f5cc7016034b77ea696da73079ed5151041eb2e9f5af. 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/USDSL1704701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7415c98784893de2e95059d97320412ff2e5f3f2cd20adeacfe532aa92bc4c99. 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/USDSL1704702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a639cea4cd646f4a397bcbe2080c1bacd67547db3515fecd881d43a465d10be. 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/USDSL1704703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa17e66e951496b8b502c65389cf7fbfccad70d289ab4cb190d1c0e3a139a9b90. 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/USDSL1704704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079f386511cafcad25fa19dc5f2a1da95209f471ce747c9f18edaf29f2df1f2b. 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/USDSL1704705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7294eac240504d4ebe089bcdb7d19f77ab8a5f685ec207203fe53031d60cb53. 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/USDSL1704706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55d3ee5669b336d40740dda79d00a0548d7bc4b55fbb2af32fab9051aa2890c7. 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/USDSL1704707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6df914c26de3dd47d91a08c6cac6722de80c2dd128e5b3b4cbf9b6afae5dcde. 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/USDSL1704708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dcf339c44649180bd132cd50f97134db0933e754accf13548430647c0f3af84. 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/USDSL1704709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c3a66ccea9d3306c6b4537b1404106b92895f6d96a3ab800b0338dc4451b19c. 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/QZNWU2412303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4250dd7bbb57815066fdedee8b7a5804b0bba2068d311891a858cf34d06693. 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/QZK6F2113447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9862100b8532fad816ed8aafa6bf08406d6f27e4116f9d4c5321a7b7b1c6ec3a. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/QZK6N1966167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272013ca6069c6eaf1e33166e9e1316d69fc88227e29467962535650359988af. 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/QZFYZ2029863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9862100b8532fad816ed8aafa6bf08406d6f27e4116f9d4c5321a7b7b1c6ec3a. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QZK6N1966167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0609b1ca5aab3c26cd9f68b4a947c061d796e7bbe1eb9c01027ac214ecb1197f. 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/QZES61810667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6356f7ec7739547d6e5c50d9d16e9c36ab58ba30a9189b14bab5cb22a4901e1f. 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/QZES61810668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc63331263841538ee2dba8b1ece5f6ac4b5677cf58c6d6af39359f2818cf5b0f. 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/QZES61810669.