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 0xc8984f4cb95ba00c3d5a482609f9fdd8e96e5658a0a870a9ee128b3f8d577497. 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/d1e791a8-a1dc-4d83-915b-b8db4775b581.json and https://artists.proofprofile.net/proofs/artist/d1e791a8-a1dc-4d83-915b-b8db4775b581.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 0xbc9264b3acae1aa324535bbd4082317cee32f8fc728a2a6e05e78268ff9c6332. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/AUMEV2432988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4e5deaabf7ab47beaab2e5b5e08b0da10a0785b67e7583655a9216bb7ad522c. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:31:53Z), 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/AUMEV2444253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c66e364c3206d1d5054cf5501a9770958ac5d57b522a22096f1084b845b1811. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/AUMEV2482089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a79ae87a38f54f38ec92b4be0f1263529dbd1797ce82937a0c944c32fdaaa4. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T04:31:46Z), 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/AUGBT2402950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a841fabd1b05d01963742941283284bf349cfed0b72aca044cb0534b411ae0. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/AUGBT2464647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cae793f09c822f731fc83ee3501125aaf02a5d5e90034baf6bba085ed3665dc. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/AUGBT2466525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8022f33b162effb31671910b23be9330a89948747dedc19c63aa9683782203b. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/AUGBT2466554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x756d36d5c16d9deb43f1897392fcf70d2cb1361ac1129375fc6d752415b8fb80. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:19:47Z), 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/AUGBT2470511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6af1f1ae74c029daa38c342d15b4146c50f192dd6b224f30b315b11439f8f5c. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/AUGBT2470512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ac1a80155b28b26fd43a6d84f113e49cab7832d5e35d7ef5ad8f523bd4904e. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/AUGBT2470583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1697aabefe638927859deab1f610b2f298662ee890aa37fd46f0a630b55c4d6b. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:41:13Z), 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/AUGBT2470557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf25b554ce394ca69ea1d41733eb7de043abc75e693759c4502df7730f6a84abe. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T04:32:03Z), 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/AUGBT2470572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34250fd5ae3f610adf99c655a57ba6b97cc44c474fa600dabd1e732571ce0430. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:21:20Z), 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/AUGBT2474407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf829f5c5c52ef51796ab2ff32a20fffdcc8aa0a449a3488ce519f7b75886c92. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/AUGBT2474410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4108fa93763a0c363d861a2491b70ebd746aaf568cefcfc67c7d481c573dd500. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/AUGBT2478839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c0a327efdb9c19faf18ac7901a7f3c61669b51c7059594b0114939ec9b5259. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/AUGBT2488432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe9d7245045621c699f83c445d222656495d75fb60fa7d409dc4074fe8c3feae. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/AUMEV2529867.