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 0x32f46162e6e277c09da6de1e9737e5ecdc9c48fb623ac875d6091486ba704331. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9b72b0b5-9d50-4ada-81b3-dad3623331bb.json and https://artists.proofprofile.net/proofs/artist/9b72b0b5-9d50-4ada-81b3-dad3623331bb.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 0x866ab01ddd9a143942a6d5223e3a4da1c948577648f3b273eab9a97852bd8c27. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USU7U1200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e179f46d1bc36ecaa4977184d9b4ea3dbe1c335265071df65297819a3c8e184. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USU7U1200036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59bd4bdb23403995ecad783b5e3e1bc91b2c687bcdff58e5842408b5c8f374b8. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/USHM91307336.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc310b38c7659a0c56a3e518f65568631091c7b23cf365461f9a5843ae20bab02. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USHM91307337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffcf161560c825d298a215c362eedd61135f1733c039405ffed73375a4649424. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/USU7U1200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf74a9b774b229de6f7f76e4c18563916de64ed79725edc4e83865012e1765559. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/USU7U1200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe876062585616746205696df04680699561f1c46d893a5e7445fe215afc5ac3a. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/USU7U1200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a79c8eb84f525b5cff90835595b6ff1d0082b863349305ba0087bddec3f0f4. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/USU7U1200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c7d79956198bcf58a0692820c3693d396a5ced4375d8f3b94d24559e4c231b3. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:22:49Z), 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/GB3WZ1900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe9098480b5f925e3cc42aa5bd300d3991a5acb80a9653d1a4773a789c19468e. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/UKTAK2000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5db2fd8ffd838f1b6395b75445c28ac419a35ee69677253c4bce310048e5b41e. 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/UKTAK2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x603ada15c01a1767fea97531b019ccc10b51267fe0d73f44afa91d84f71979d9. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:47:50Z), 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/UKTAK2000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cccdc2af60e32f97f15ae678c1431fb74c382c715e2d78ba1c4e137ab5cf2a6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/UK6822123017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b0c5fa3b96099d40f8dd046230993c61be4da514fa7cadf455fbdaa0e8f440. 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/UK6822123018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b79321cdb18cc62e800984ae82fb676e9c839e256e18ce8523906da91c7b6a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/UK6822123021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc693730527d14f3a16b3a86f10b1096c704162444ecdc723a78b1c74a04109. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/UK6822123023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff325bc5c39c42689b09dd877c6e3d92fc2aa2b628c9025f3008acf112cbe18. 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/UKL4L2400001.
A Total Disregard for Whatever It Is You Think
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2163f9847089bc83c16c6a018ab76be0cb1c8a235b74725c71f3727b84754085. 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/UKL4L2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea6fe90774cfb939b47c26ba8126f2d5a25dad1667c4147d14db21ed0dfb157. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/UKL4L2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedd598229032271d278f2fbf74e3c5ad89c4f9618a4df1f181b8f8086c07f2a4. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T11:03:07Z), 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/UKL4L2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079b7c9808512d8239318d8835293451d66c4e948562ef346f469daa058975f9. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/UKL4L2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b71148d4f039443230421d85169695571bcabe58abb2dd93bad17dbbb97f8a5. 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/UKL4L2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x021564af9f5e283a1b482add20fb8f007f50bbb13eb3e03f6b2f76c6492ac885. 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/DEG931992134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b2c1f9d2983ee4f7e5e7861ab477e7016717c9a8e0f497c85c7ab9aabfef3cc. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/IEDVS1200003.