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 0xb2603f5bec7a3cdffd6a87023b06638cffe4bfe6e8c1b5e6b9a261d102e8e10f. 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/d3abc5a0-f4e0-40cc-958b-832572aa23e9.json and https://artists.proofprofile.net/proofs/artist/d3abc5a0-f4e0-40cc-958b-832572aa23e9.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 0x4dc14c6c48becb0278c0a9f485807c730f0875997c33e90640a5111e3724d83f. 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/CAN112000251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa25750c960db77797b83f005190047c7a03d99b0b7e18144203d8aaa9a6d7507. 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/TCAFB2000552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea38f731e1a0a2186388ed94c68adbaf0faed7d14d2fa8145fd978b67fa95200. 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/GBKPL2093008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f92b20f6847bd32c9bcfc26949e5ea0575ed9ab802f0d282bc95ce51f0b91de. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/CAN112000045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98455a1b5edf87308bc6fe2744cb1ee74f2dddae557e936547839b8b79948a58. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/NLW6T1900041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19130cb71364452361186ed79261776c0232d1bf51093228926b37d9db1d410f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T00:46:16Z), 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/USHM92062257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03516e20fa4b043561d3bf70e512fe22a4b98ca9702b27605d00cb94c4e55665. 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/QZNJX2081356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20407029024d3cff2186695623b6bd6f094af87a0090461a88b024090f297609. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/UKHM88190042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86f499e3b539310a4956aa149bbb08758d6f6752832eeca6d057e3b41bdd393c. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/NL1AP2059722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c8c471c9a485339d9de148750506dadbb7f60a1f6c7724e5e67c7145fa0879. 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/QZFZ62055285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe76ce454e7d7e1dbcb996e85ac67a3eca1fa83508c03f81d8eae26daf1fabcfc. 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/QZHN92013260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x731c3a0bcaae0a603a74f719e6485c902f8c2dd6ee8e487f68293f2f75be88b1. 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/QZ7GS1700013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca6708816c42ac63266b7030dce00910b9290ea4aa8be510329a9e72e3acd822. 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/NLW6T2100063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94720a36b7b94f5066ab056d050f62374f7ce547ae90e5a0173201d20d84a22a. 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/NLW6T2100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6494a98b12e0cb91156b94c2031e26f3c2eb9234e45beeea272c1420690eb9a. 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/NLW6T2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c3dd224fb50437be1b377c0b57d4d0c6c7d589cc2d43971809a77554d47613. 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/NLW6T2000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98455a1b5edf87308bc6fe2744cb1ee74f2dddae557e936547839b8b79948a58. 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/NLW6T1900041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6883da81c42bf2df569f464bd19e9a6e59fef6e60eff08b8c9947435216caeb9. 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/NLW6T2000016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdff1d761dfd05b91cba86cb5be1222dfcd60b1eac35c81a8d6d7085857410fa7. 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/DELJ81957746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa827391f34822bfb885562e485923b18b27683c31b9c381ed6bd95795b6cbb. 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/DELJ81812709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ff7f6db2200a115185b93d348063494d40c21344e1b341effebe4183755355. 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/DELJ81894842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c62c8042128ac7ad3d231c91d34440d785e417e3688cf930353bff2e82cbf7. 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/DELJ81894843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc3b0d6d97d3a7c42a12b4d472a0b4c7b6950c8c453f029f16c8cad344b98b2. 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/DELJ81610531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79508fee336b1bf5d8fe8d0734083ff5643d9bb43fe745f0a84a57d70c255021. 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/DELJ81610530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a617b5c374c795d4501796dd0ba8ce431c9ce0128e9141234c6a60012b620e. 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/GBSMU3092805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d911c65a7d5464aa41875685f023e2076c10284400271f0c95e7ead2da0f3c2. 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/QZK6Q2177753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe0860bb122da68dd4a9a38766057a9fa01605a462c95e4844ba7008de176bc. 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/QZK6J2133173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94720a36b7b94f5066ab056d050f62374f7ce547ae90e5a0173201d20d84a22a. 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/NLW6T2100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2d13ed2496e92e8caef7d242778a73b50264b0b16c73683cbdd5ca82e26a190. 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/UKW3Z2100342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19da6a26d8841749c37533bf30b339b53f249769c8946bb8d4e23c8fe44e6016. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/QZMEN2008124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa662675c1710c093c178ea1784bbe60f82f0ccdb82e43ff589e6bf1aa8c8494b. 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/CA1NT2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24cf4188c7b0e2a510b657cc148c43a9db2069554cbcf4647c3a527e7fc7c59e. 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/QZDA52125656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e6b237169278bbb8ab44a41a78fe510a10c67885c870bb47bf336e63669091f. 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/NL4NL2023246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4908c015220ef796e5eb0d98f2a02d9a2b7f164bd8951608b0cabb46a97130c. 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/QMEZE2162054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d7f8156ae6e94843ced470aa263214dbc98ae2accb3cc407357817da79972a. 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/NL3NJ2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca6708816c42ac63266b7030dce00910b9290ea4aa8be510329a9e72e3acd822. 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/NLW6T2100063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71cfe72133593522e5a5a09ece3f8a52c805e7a25e1d66e9e6c46f1936d479f9. 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/QZFZ32117406.