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 0x09146179dbd8bf55f0827bb2adb4d61c4f9d649b08a387adc903ee5105093914. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/23decfde-8b62-4227-9dd4-da2144480c98.json and https://artists.proofprofile.net/proofs/artist/23decfde-8b62-4227-9dd4-da2144480c98.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 0x44df14c2ec71fa6ebffe9dd9fe4df472f5e7b4239e4bfc4d2f41878e2d7c6232. 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/BCM9B2401288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b2288e0c566415a50b1b53e9c9b84d8a708093961e4ae8daa761632436fbd2. 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/ESA112427631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbede087e2d273836095055478817d02c1b767cf72ee35b9f5436ea295e1b31f4. 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/ESA112442160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f70aa7a7193e66f380e86ef5c4eea197e8251881bdb64da7cc7a1ee0e7480f. 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/ESA112434937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x352e9f46223321a78ece7d97336d90c2d05bc0dad86fe9ce300ab08a518774b7. 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/QZNJX2457474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe588a419d9adb848cbff24420e9eb6ad3dc1807d53a4d9c8f23c48b0d28ab7b. 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/QZNJX2457475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea09ba898372854ed178bda15087a779e971086e41718327842d4162344f2bb0. 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/QZNJX2457476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf413e8f2fe26118d27053f31e8a22cdcaad5b4f9d3e4bff15d5333eff8b74b4. 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/QZNJX2457477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69399d1074dbf0eec4eed28cb3c28ad8f1d67ffb98d697ab396f98ce93da84e2. 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/QZNJX2457478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27db2a774a454ff957d42bc3d2195f1c32231156ae22bd4046d7514297d8312b. 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/QZNJX2457479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x038c4d1a01506733db9e80075ab2a7dbb2209b03c9d6053ed18863b52ba5fb91. 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/QZNJX2457480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b084a516566af45aa04f298e780902a6eb49afeb830f4c6e77476ef5c0b610. 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/QZNJX2457481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f6dc19352d7ad4fb6ff6f5cdd58920baa425558313f60a5ce7e9d076957e2e2. 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/QZNJX2457482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6718e31edce9cb7e6fca62e50eeecdae14a1ea11081f42faf61bac7a233b3663. 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/QMDA62373541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x259ed47ef9a5250d3eb95c6340565d4a12c358efe0896b0ffe1e4819d25a98e5. 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/BK16P2400208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c04925814da51269833feab8447787d80039b7e6eae0a3ef08885656aaf3ae. 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/BK16P2400209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x391d1c274cd3ef6f7ebb5140193225c00cf872657c30d879210c24a3f70e9283. 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/BK16P2400210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c76d391dabc7885f29c41372bf5522ef04e19b375d35cce95de6ba8899a08ff. 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/BK16P2400214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cf59e2893ba3429ccc11e66333145cc35505dd74ff1b77e7d0590007fc12865. 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/BCVK92201429.