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 0x60ea094723f3f80110a8219f100a2b2797b47f8892bff6fa0e815546ba4b2dde. 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/c6103f81-52d1-485b-bf24-31f495e49ce1.json and https://artists.proofprofile.net/proofs/artist/c6103f81-52d1-485b-bf24-31f495e49ce1.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 0x51c124792fed33a5e03a8ff9a5e473234810aacb444be66f17184f12b019ef6e. 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/USA2P2254026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed5261a88a2bc61bdfd3480dab32b3407751684983a07dd8e2a457ca12f8ac52. 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/USA2P2254028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c9ec7696d55e303a88835e7a7f8272ec10e601d78a4377d5f1035455f05e139. 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/USA2P2254025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40683819b9b612e678df1ed22695b62b79763730666853515843679c0f4e7fd0. 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/USA2P2254027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2611f7e9eb08e55587153f62338056848f46d4a377e951482cc0723eed64504. 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/QM4TX2009853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f49b4687df4151dc3cdc0f740af7551033895920139a3fa82c1b86f74b68c6. 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/QM4TX2009773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x474820188906dd2e73e151fd19aa2f2f189cd98778fdfb45a18eb791af70ec56. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QM4TX2009779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7892d76b6406d2a1f4fcbc32d6a407bd32964aef373f9249dc8cfb1ea4e3b787. 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/QM4TX2009780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1e1da3f382f727a67ee1995eb52e228ef1675bffbdf3fb90104667d824d1d9a. 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/FR2X42456881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2611f7e9eb08e55587153f62338056848f46d4a377e951482cc0723eed64504. 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/QM4TX2009853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x770b65b204a63435c3b70c53df0f5b90dd75bcdb85c86df08fa704c6b8b40e3e. 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/TCADS1808736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b50519a3b64de9c58d9c0ea29bc5be1b1ab3549730f927a43a674dc10dcd397. 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/TCACP1627120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e11eabdd84794a688efc84e81d6c520a55b7044fe67b85ca319cd24e3cbcb3. 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/TCACP1627122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07f0534832e6a13bd32424f68f16f612a16d80e0f14d5c669d56780f5474690e. 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/TCACP1627123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5215e326751eb57096e75dc78888e09db9438a928fc2e8c52c57eb06c5b34b48. 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/TCACP1627009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4cdd4431b8b80fa23fea6fe8736bc5c05c8c4abab0e3c1384a8a24bd7cda097. 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/TCACP1627010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e654eb0d34036cb49b034565a7effccbe0a0769d684edc345ff2370b6645aeb. 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/TCACP1627011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bfe51456a5685eed686818007af9cb1c2b8c652b45c6af4d9d61771fb7b7869. 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/TCACP1627012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b712d634b06df0b51c352c4450cddaf2858c7cc937f97ae277451c35425795a. 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/TCACP1627013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea530b1c9acf977ab932d2afdc01f3ad95727e6cdb2061e62b90bf466deba71. 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/USA2P2249936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57bdbbde6aabfb6b5ede777420deb029052d31db4726b160e4b204ce54db101f. 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/DKJG51500607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2639eed7ac39fc2b9842ef55b141451fc1f8de3aef5ebc51cf3ede6c274ecd1. 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/DK92A1303312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3476f6d61ad4a0f5fd061aaeebb8d35947d7c1f047f04cb10af269fcf4c359eb. 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/QM6P41998067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c41be922bae53485d3c4f2dc5340ec886c9dedf5959a86679ec9efd2111455. 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/DKZD51700103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e5df04f5931b3d1eefd5be571d49feb69a243a2813d8fac1210d38c97930996. 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/QM7282054775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea530b1c9acf977ab932d2afdc01f3ad95727e6cdb2061e62b90bf466deba71. 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/USA2P2249936.