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 0x37a11965c0736fc8d0111d6ad64523534a8ce2df235968cf2314ae64ad2677b9. 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/dfa19ccc-177a-4dd4-8a53-290f65107919.json and https://artists.proofprofile.net/proofs/artist/dfa19ccc-177a-4dd4-8a53-290f65107919.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 0xb9740609d8199492bb5ed7e00c8e62777d60a581b176ad3479779e9f74cc0f37. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:23:40Z), 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/TWCC32300709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc987c6834cfee5e41fa0f61dc360760c9ef43ac026b2f5b7e4a15fb39721476b. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TWCC32300491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5eea1649809d05521d5f6dd0a416dae24d9d99d55a0ca04209ac18fe7056f3b. 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/TWCC32300711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d27613423b6895795c440a8d353e6789c0ff97668d01d5d639a232ae98bd87b. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/TWCC32300714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b2fc40ec84c57ea07458dddd2972a9ceceb1917f413d79701660cdd8ec72743. 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/TWCC32300293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2eca02c2474fd175fb3216892521d8101de058a302f8752986885b0b642e8b3. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TWCC32300296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda409e4ea918977e6211af7a7f6546c305553da48087109f2bed28d20f31810. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/TWCC32300298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6900e30447fcbf69c5a104923b37af1f53d84e3d7d7c16c3a0548922f7e9868e. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TWCC32300483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc01cbaaa5b962e8f1d1f21839805947b4bb612802d05b7ed880ec1df198996. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:01:30Z), 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/TWCC32305031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af00705fe13513dbf22c62fb94bdd241a880fe22bf8b3b14dfc01e9621d767f. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:06:41Z), 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/TWCC32305033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb498c6d82da469754aa66f7372f7401d56aa84700023c87f915a4b41f2070e96. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T07:44:27Z), 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/TWCC32402493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a8a869c045cea4fead0dc3cce774d6b41cf1ca772bbb3daaf8a76ecd4de624. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TWCC32402496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc2e852276f7fc7542f610c939cb10df4982e81bba8c7840402dbffeab692c0. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-20T21:59:38Z), 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/TWCC32402498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4391490682d7da8e7a82a9ba94a69c1035031d10ec2f9efc335b9bb68e1934f. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:46:36Z), 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/TWCC32402499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x003d2485cba675c79ae08a54228e1070795a38b0e343866eacf3824da8917b77. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:39:12Z), 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/TWCC32504891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa870b44033011d786ad61ba24c1f491c85127aa711e44b5ff8977e99096d522. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/TWCC32504892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3281bfcbd09cce285b1b580a0f6c328a98fb66d54a4e59dd89b4d6d1ff7a2d58. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TWCC32504893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697bef1d1b4e5fbd6076c76e7d3966ef4eaff28d279a8484f19d3a7d483d7c13. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/TWCC32504894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac03243ff56121f7c99be64d983e7dd12d16c39f289d4a6c8191a0b9673a95d6. 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/TWCC32504895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d2dab0ad184b81c5ec00c39633c9c58474c18e9a05bb9dd6961289d0b99847. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/TWCC32504896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3151e0a7a95b90ae058d8d68130833b0c20ff38165e00dfbc83d61dece8209d3. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/TWCC32504898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6247b2c6e8532d6b2104435ed4f5f503f7676c85b90279b46d27fcbad46f2b31. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/TWCC32504900.