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 0xa0d5d7e74f68bfbaea5dbaee5a399258715e8c5da6698216ee763cf9474dcc6e. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6800a631-e30d-42cf-ba04-e17a8ceff9cb.json and https://artists.proofprofile.net/proofs/artist/6800a631-e30d-42cf-ba04-e17a8ceff9cb.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 0xabed8d74d1ea6d9c401a5d33e2335b1f5039737905ed3fbc1ca4296fdd7ed0d5. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/USJ3V2072556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74fbec96010b89cdc5f8c73494fde1ab05db1ebcf617dc56baf44947c98b646f. 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/USJ3V2072569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5db3b196b9fab9a53689553f1cedd1f4a5cb41f5b0063630a5353ad976c8b934. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:05:34Z), 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/AUMEV2456570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12b50668a2d9fcdac55da5454b833e5f8b116858b9328b18073cbece7291c0a9. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:07:41Z), 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/AUMEV2456574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadea613cca09b74928605d88131368aedd19f30a664c0004f443bcdb1eb5842b. 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/AUMEV2456580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa481bf482347e222b3275fca51f3e0d74eb07bd6ce3b66dd3ca059258c56a22c. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/AUMEV2456581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc5a9d5fe390ec8e7c3ad9831f4051b04902c203a6a1cd1220c1cda47614de40. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/AUMEV2577566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02bca65d3f61ae036593f1e2e6f855bf72f992719d4c29b002e87ede73f9a66c. 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/AUMEV2577569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e4be7fbd357176be70c92652eff80fc4defb2de4d18b3bdd246da3ab672ffb7. 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/AUMEV2577570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7700ccea3da63facbd4dfad32ff3b00171c145a835edd3504177d9ea60eeaa59. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/AUMEV2577571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44dcbe0a0279df9bf35875fb5c530c2dc4138c11655134b62c949371a5d96031. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/AUMEV2577573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f243aa72053e5ac88423074abfa4b64da8793582334a06e3e7aa95c4ec89517. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/AUMEV2577576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x882bd4cf48c95cacf40dbe607fcff4a4cc80b003b2f8c5748e906d6e73677101. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/AUMEV2577577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x346f07cfb4e590d023eccf514c8836e82cdf7cac5cfb98ec934b92cff227685e. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/AUMEV2577579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x348121d6adee7b2a7de2613d66b96882bbe630f4250151ba19aa284e1b9acfc6. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/AUMEV2577581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8426b55b57201de093206a6cbeb00817c56523c80771d14d27abca3f5ec890a8. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/AUMEV2577583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd527536958dc003cd42546620a7ec1de952c6a82e4062a7ccd7416a1de72b4d. 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/AUMEV2577585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x905def4e841b58f21cf1fef7d9ac23792de6dacad59d69e7287929f641abafd3. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/AUMEV2577586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x883f022ba5be403d798e7c41a96e8af366f22bc316564417338218bda4ca7e93. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/AUMEV2577588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46d16b7abfa7ca06159e68828c441b29533415a8e7dbc9a0c5f9a0af263df7db. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/AUMEV2577600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x376d49797b511ef362f2e48cd0b0e2397488dd9b2da46377f2e9267970f72c01. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:01:25Z), 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/AUMEV2577606.