1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xf24ab98bd83f8eaa91df089b727c4c601a560d9c9fe688deb2048eec17cd2b03. 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/c0944aec-fef1-44a9-8001-1ccb39cbba7f.json and https://artists.proofprofile.net/proofs/artist/c0944aec-fef1-44a9-8001-1ccb39cbba7f.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 → block OTSBitcoinBlock must exist at that height 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 0x013804d1e485e0f652e45404b2c75d3c5e1b3502fc90a055d4793dc3f3d26fa2. 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/PLS282300105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c2894a598d326a9b1f286dec98b6d830e71f8eef1ef2e9f9dd918c94a51a91. 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/PLI362333114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5410f579f9fcf8f60992621ecd1b357a59d4ca40a3e7f87b024350f3d8de7377. 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/PLI366055060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf107fbeb6a3f52a51150b8de911073e31d49e26402f396bd2722a6b818da43f1. 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/PLC062230827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d576001d74ce07d5251830029e46912b52dc34f3c407f7b5f479838759e549. 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/PLUM72200044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x013804d1e485e0f652e45404b2c75d3c5e1b3502fc90a055d4793dc3f3d26fa2. 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/PLS282300105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc077c86dda852345bcaf7433d2cab7bdcc6a7ddc605031f928a7b753b33a1656. 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/PLC062432316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e45b7cb16fad2324bc261f5d2e8d9baad7db5529e2a1ebd2b1b1917c0dacc8. Chain 2 (Bitcoin): anchored in block 957013 (2026-07-07T08:31:11Z), 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/PLC062428325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaec1bbca65df1e2412d52338e3d01de3b3b475509a544879405e5be6dc0d544. 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/PLC062431255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a02a650839ca8216e90d3b723754c301fadaeaf4d19d98df45dd4f628442be3. 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/PLC062429969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x476b8a2a09cc7a98364ac7824ac1b3a24345e584ed68afda1412096306e51432. 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/PLC062432322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf107fbeb6a3f52a51150b8de911073e31d49e26402f396bd2722a6b818da43f1. 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/PLC062230827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b5fd7eee9285cf2d2331c91fd770963a86d29e3b031b22bb3b7bd5582cfdab. 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/PLB382400852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a02a650839ca8216e90d3b723754c301fadaeaf4d19d98df45dd4f628442be3. 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/PLC062429969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e45b7cb16fad2324bc261f5d2e8d9baad7db5529e2a1ebd2b1b1917c0dacc8. 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/PLC062428325.