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 0xc740e49ef8f7bfe05d39490f1877f964c223b16701af363c0412317a0568284c. Chain 2 (Bitcoin): anchored in block 953786 (2026-06-15T12:56:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d9de5323-fd17-4700-bc05-3d5692c12721.json and https://artists.proofprofile.net/proofs/artist/d9de5323-fd17-4700-bc05-3d5692c12721.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 0x64beed4b234cdcd83cb65b44962c3e587e5dcbfa63f40a2c0f8817bcb2341b2d. 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/USHM92181585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f383a910d752073eacf10c0fd220a6715d89808c2d44f39804191eb7210176e. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USL4Q2199440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fc30cf23bf4bb399592e4bd6aecf7244405054117e255d8ecc190df0befb0f1. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/USDY42083784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7196f78bd6cee2fd44f85b409890072ea04bd40c6e8b6f8a6dd28c18496543. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USDY42083785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa52d52906c5c8065a4ac48eec6b6ab2cb9f2c44e6c223b64b7faa3843f4cf95d. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/USDY42083786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44b8480d1f1b19dd04660b65f4f85dc9b56896a45327d68617de320654cb0473. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USDY42083787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f188a12cf211083ac99ff51ba3ac29b887f67116da5dbc7fd8b8024ae1b0982. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/USDY42083789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f1ab3e68a9ad4db22a40be051969443045fca8b561f8546ff22691a1ef16dfe. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USDY42083790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x574a3738fa0b1c1de3db0d0dfdd62b3d5279943e7e13cfb812501c6b0f75c785. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USDY42083791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2384babcc306786b915a66bfe3cb0bb31a534a395805949a967b4623b9150ed6. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USHM92249363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a284452678bf770c9a22a1f1765d1ab74e2341d953bbc5d751ba6f68437aa8. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T19:56:32Z), 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/USHM92265072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa2a26b23b2c2796ddb4900aa1b5883d66ea49fb18a63ec028eff8569eb3b09. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/USHM22271062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x699a8fc41db34287ac8aafda542e2abdab0ff5101d906e4777a06aab1bae054b. 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/USHM82121845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49430f183a04cd8b6ec197ff8aedcfc9eab9600ac1bbb0efc9acc4a1ce08dd03. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USDY42287848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97915c7049db0931b49bc5fb82cfd0cf4ac9621a469a7de07afb00dbf8abf7d. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/USHM22494537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b83c709e7f23d45362327736f9b8fed980794d7866d51339d9dea63f2ba724b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USHM82426490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb269f624062b7cfd5be27eaf9938fba467a687564b7f37f6dab23e5e11150ab. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USHM82483983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaea66d4850754f79be9b26b34556a110b31dbb9311b2bc29aede7e13094680f. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:41:18Z), 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/USY242408650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe402fb3217ea62c9a0982a905109ab679088c4ca8824bd24adcf434c67f898cd. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USY242408657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9270b4cc781df86688417d0c996ec4bec48889b9f0d83810492a984055f5721e. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/USCGJ2546786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa44c356209d61a45ee8097a790016106e6eaec19d63d473888542d5ba2bddc. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USDY42563763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1280278ece554e554408da115edb16a917f908f7ae06fe0d1fae57a426715b12. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USHM82552074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b09643572d080865d05dc646989be2d3742830864659a2a05cda50de14308ae. 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/USHM92570917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb8109aecdee6e5fe703250af61b88473a4ca22a4758219d8bca86607297f4ce. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USY282500389.