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 0xaa6d3bb3b3718daf3fefd03154a1b3caed97c012b063e32a841ec8a23e21f78a. 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/60d4d8a5-7cf7-4cb0-a4aa-fa6235f4e2c0.json and https://artists.proofprofile.net/proofs/artist/60d4d8a5-7cf7-4cb0-a4aa-fa6235f4e2c0.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 0x78a10b3a0c569928d05a3a8634dcca6bd43ad4c610916fe599cf232b502853b8. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/SEBGA2000057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb874b37f2292e5d635445a810d8e55551d37abe9f9b5a1dd3e54da0389977c7. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/SEBGA2000479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x483e9896c48efaddfef0e3b27d801478a3d2c31c0369b84555e09361d4ac2135. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/SE6QE2013893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x483e9896c48efaddfef0e3b27d801478a3d2c31c0369b84555e09361d4ac2135. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/SE6QE2013893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x008b67e61c1327820f5e42e3425c7ed5ecf60453e35b22b206336de1e045ceb9. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:08:36Z), 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/SE6QE2039477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x008b67e61c1327820f5e42e3425c7ed5ecf60453e35b22b206336de1e045ceb9. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/SE6QE2039477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9bdb44c36871ac4f53417ea440fc041134962a754552b23fce750e3c8784d8b. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/SE6HN2192528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacfc867ed113979049ba8b899efd9a2e2fc33cf11cadf1f25ef3b8336dce3cb6. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:06:33Z), 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/SE6QE2105578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad6a26293611282adab820387209a17c68658a807f1819e3fc93f669384727c. 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/SE6XW2145409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b961993c91f48e0019e10b8da255361b746f796673efe5bfe9d4cf6b5b90934. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/SEUM72200049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b379976d2099eaf7ec192a84edc9762d4f32465f2155e89c2244b85edb9066. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/SEUM72200280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x750ccff6d08561ac6376fa7121259662a795402ddf82aa6928dbd52143c08dbc. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/SEUM72200313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cd35dc465ab3402af3d3304180e5aea966cf3acadf67e445ec6431d95b610b3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SEUM72200315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff02c9b04cd5c5dc48ce6c99cf9957f3cdcabdcbf35219a5dd01b2c4bc373b74. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/US38Y2412206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5a3bed3d26df58619f290f61f71e1d3ccd1114df8112231bc48526fa5c8b11c. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/SE6A92363297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534e182ceccc4a5cd3f4463c1cba5ae4e9135d79659c1c7e919502e19b41c3ac. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:06:20Z), 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/SE6XW2327633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x085acca9f67b55f2ad1f84ae5c932db1808578183819ea6d8bcdcf81d5ba27d7. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/SE6A92362238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf63e9a3a81c98077db90bcdb066176b82e59d65627d4d825ba305c081c2639a. 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/ZZOPM2002039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55816390d25ccbc319fc8c0dd96805369b8d9ee8f8cad286ad90402e27b4100d. 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/SE62M2106012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a08aa12288667ab1cf3d3455edfda06c0c43dee1a78907ac1af4a58a4695db2. 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/SE6A92083149.