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 0xf24acbe8a9c43e60d5518a5bf3e00715460b68da94f7d167f704f81b60c8c9f1. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e79cf8d8-0574-4857-9ae0-57805dd12ee3.json and https://artists.proofprofile.net/proofs/artist/e79cf8d8-0574-4857-9ae0-57805dd12ee3.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 0xf48e2ce57c7b2f9a1d74b316f7a47943e30490058667bbd7970b8514016f5b73. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QMDPP1800740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda5a0e62262ad72d943d2c5d71f4f971705679a0f3de6fc61cd7c8924996d5a1. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMDPP1800741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef7eb6aecbdd0ba24784ee878ce11292b86fae49b3c262a58330dcd0ea0d5e0. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMDPP1800742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x797e4ec847096a5e6c43f97562a651184614c2b4111d3fae2217864ba2180dd2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMDPP1800743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd62df2456a7e98f4f6935651e25322d56170e0a2f8288e6840fd7eb3fe99e48f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMDPP1800744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc403a95c1e3f735d9711e02f94fb92deb5ec1831615a9b64e613d58450d2f0cf. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMDPP1800745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be20671dd4336430e111faa7f92b804b6518ef284b726af3dce78efe8adf3be. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T16:44:56Z), 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/QMDPP1800746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dcbc9d675fd75051aff1bb7e35015a18f30bc5c18cb98fb8521141d9e7a3812. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZ46M1600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd06d33f07ec8fc6436f66fe72a9291381066b4bb2b0ead126b07b04129b62125. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZ46M1600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf48fc2fbe5585def027f12e84f2ff7fe575523cf78a3dc644ff25b36554d05b. 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/QZ46M1600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c96fc2d49e3428eb2f516e450e25de99d13097483c938894645eceb4c164cf9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZ46M1600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b43b9cfc1153ee6d206180a2ce2bf6372dfb0bf454897be894f5625b9f06d01. 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/QZ46M1600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d29aa4d34e0e8b63f5e1a806321fda4ad2c2ae4022817989a42453df9b90a3. 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/QZ46M1600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80baea31c14b02510bcc74ef7fe55dabb95406a30d08a45a76a217edacd1c938. 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/QZ46M1600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d17f956a5f8ce19623302764c97097226ea08b97b9748fe93af26f4168ce56. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/QZ46M1600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa62e904aa50c7255c61b7bc3c42d59b3c510516879f7c416010c2f7fc41f04. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZ46M1600009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc03076de099f94e7a054a9adb70e34ff9dae150fcc7a5b952bd182611f37279e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAIH2452475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x938c4e0b261888aea604d8f8351ea828bb1e456df0037bae8f441ba060ba43a2. 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/TCAIG2404970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5efcd90e1b65480eeaed643ceb635aee74c02755ce40d94774a4614c2842ac4c. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:05:32Z), 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/TCAIE2434622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81aa8d5e7116343b1102131a3e8254ac8ac31783806efc91adb29ad09f04856e. 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/TCAIE2447240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3493e6f593dce14219df68cec57f330d3d2e9484d5f0f259bf1ad812a3341c4. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCAHL2319744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc34578e30fc06a6f0747b1c4e1cdc51846517f46223340c67764ceb1bb76436. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T18:00:48Z), 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/TCAGS2375050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42cf603ff9fb02b0323beb9472193cf56989aff7edc962ac0f3d993dd77bc83. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCAGS2376614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c50b9888c7103d4465f743e91a8de6958eb4ff55c5f8ea78141736d12170e3. 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/TCAGS2375333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3f79db064121a2602651e41e0f7e0ba6d35db23e2f2d5264810696618a84d5. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/TCAGS2375516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa86eb25d837f76d32b6d790fdd117c21e0a1d639e8710c8e908e3e4769a9204a. 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/TCAGA2224508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53ae467d958cc140f028a9c2853cd5931e51ae6a60943f0c638648e40794a652. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMDPP2101249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9219ac1597c8ebc23683b111ce1d711ccca2fb4eff4dc5c79c718c14d4b2293. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMDPP2001050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6413fe55ae123c6f67f3e3a7dd0c89bb6ac881c33c67b27ba2894cab244194dc. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCADK1750230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0971858ba784b0d06f40dae9dc3391e3ff7f391e1ada5074c177d6c6fd5c6028. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCACE1547674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe25031693cb891b51eade7c6e9e7b32326273ca72ccd79c05602b786c654033c. 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/TCACE1547676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c3996ff944ea073b61f51a8ba92c2c9eeac1cd2cd0373238b508fc33986a8dc. 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/TCACE1547678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafafe504ab1eb0681eb3fd4b0ed1cc52e9ed99b02b9c8d01defffe1d3c95e17e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCACE1547679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x537c0fd0687a43dd432eac7352074af007aa190f61395ce4b2e388719c73a72c. 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/TCACE1547680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16a624da17a064e017be7116911ea8e54ff8e0294c3bf07ccc3473aeedf2b4d3. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCACE1547682.