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 0x2ed3ae90593e03ea4233808783033fe2f5f5be6a71f4544f595ea560b481e11d. 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/7136ec7b-e19f-4639-a3e9-756eb934db89.json and https://artists.proofprofile.net/proofs/artist/7136ec7b-e19f-4639-a3e9-756eb934db89.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 0x3905ee514d6d65fa6e27e9312b559743bf7276a396f54e8271b602b40ccaa5ba. 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/USANG2490151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f711364656150571ae583197c46a462f45c834e10eeb046eec376b2a6fcb803. 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/USANG2490153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x570833bcd5c9bdc0ccfe54d2321c933d552776e39b1cb23cfbf0989bfa8f3cc6. 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/USANG2490155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e4120fc853468df113735179de42ddd1e76548e780cb99618b01bb6b159f4aa. 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/USANG2490157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa785d0071582bb3e88d2a6c2aca105a69b0f05c9f23d3eb6d641311d2ae2f9ed. 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/US7VG2469654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x086be30fad16da37ddc26e3b9063ffe10a34bb02fc0a89122c24492a3a1e08d7. 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/QZGLS2430096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46cb2723edf68f53942182d7c994095db33919e0b9ca9ddafd355ec93a932304. 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/QZNJV2434625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ce71156a7550842f3d6d19acb1648edaca4198ff3a097bf54292b41d76be22. 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/QZGLS2473340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5a630abcd67bed6797a0aadd0f551da7858e99bd96b3b1b377f7a4da347cdfd. 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/QZGLS2493523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c533568dfc1f438e6df9b42d6ec9c3111c6c8b4f1778e0cbfe2359146474626. 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/QZNJV2434626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d64e92a32b054f3dca17cb32e607c516cd703c91ac0408af336f3344a6b7e0. 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/QZNJV2434627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x188642dd582b190d055e0b5a35b6fa325718229a25266076ba0e320e950653aa. 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/QZNJV2434628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96670a10aa35ae476d97a98bdb3eb82f46024d7cde5010df2b21dcb54a65fb4c. 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/QZGLM2440868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x374d98fabd98ae5754e26c9ab3d0df425d32904f5b905abbeb9b7e62321a8f6c. 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/QZNJV2434629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea95b8411df67b464c61db3711b308bbe0f337f4558e0c3215f5e1dabcb5e13. 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/QZNJV2434630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227f84983ae34a23352b354bae736a1fb598817b707814d30eccc8a6149d9489. 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/QZNJV2434631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf03c4ec579cb07d354940c7953fb45f82acec8ed23a9890da0fe7ca2b8236df4. 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/QZNJV2434632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc57392e733926ee6f18312133f15ea65023de250d5fa63da1a0a71eed8b6a819. 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/US3DF2519116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e0dfbbddbb4ecb4609efe32a51c2672790ada2df8e770987fbd73c2a334ebc5. 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/USANG2459890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8698d59c892ba7f41ad3241bd945b8b39d206312a9a604bc4d6c7c1c149ea7f9. 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/USANG2459891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c1a5f3e5049f4a65738ece6cf94bccd7135364c7665eefefc296d4f9120916. 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/USANG2459892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x743195575ea0a5da3b3f7fc1167f53b4d562450e11eaaf3bad4abd49eaae5d74. 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/USANG2459893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f02305163f8f1911080b9ce6a5783d233a96414a60385497d5596dca597cea. 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/QZNJY2489036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ddda601405a4705154b524ed8484e2a320d896c14c04f481eaa145d657d38de. 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/QZNJY2489037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x134a42f5b873538cbebb5d0f8dcb05a84dab81971f5053d63b4d3d5784536455. 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/QZNJY2489038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c67c5626af3b088f1acc3458d94cf085996529962c9293ddd886ff8472eaea. 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/QZNJY2489039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ce71156a7550842f3d6d19acb1648edaca4198ff3a097bf54292b41d76be22. 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/QZGLS2473340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x086be30fad16da37ddc26e3b9063ffe10a34bb02fc0a89122c24492a3a1e08d7. 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/QZGLS2430096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96670a10aa35ae476d97a98bdb3eb82f46024d7cde5010df2b21dcb54a65fb4c. 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/QZGLM2440868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa785d0071582bb3e88d2a6c2aca105a69b0f05c9f23d3eb6d641311d2ae2f9ed. 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/US7VG2469654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x086be30fad16da37ddc26e3b9063ffe10a34bb02fc0a89122c24492a3a1e08d7. 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/QZGLS2430096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96670a10aa35ae476d97a98bdb3eb82f46024d7cde5010df2b21dcb54a65fb4c. 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/QZGLM2440868.