thumb|A collection of headgear thumb|Portrait of a lady wearing the Order of the Swan Headgear, headwear, or headdress is any element of clothing which is worn on one's head, including hats, helmets,
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 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 0x27bc45b0f008bd21f76b577b2cc1aa9b959d21cf416f9633ff8b5bf9614dbfee. Chain 2 (Bitcoin): anchored in block 953930 (2026-06-16T10:36:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1dbcc064-465e-42c1-941c-1b74e7c71a12.json and https://artists.proofprofile.net/proofs/artist/1dbcc064-465e-42c1-941c-1b74e7c71a12.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 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 0xc056868b118174fb9c58e077cd9f327ddf6ee8d3e0d2afd769765664c696a614. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/UKJR41700031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a697587126105b276dc2b99ac6d9b84ca69734eb39f421034ebb2974f0ac76f. 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/UKJR41700032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e94f5fe76258cbcad2720a81b7406a2ce94675807249b7f56e96a3463f5222. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/UKJR41700033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x314ef69d74e8682f06c0dd230aac12f37cfa403e4c928164877ae4c3cfb740ee. 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/UKJR41700035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4ec5a3e44079d3298ebbf950541862bec4ee8f65ab9bb7eba6d82ad94271730. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/UKJR41700038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f27647b81c0a164ce5f62379e03879c97468ae981d78b7ffa6a0ce91670a4e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/UKJR41700039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff35ed3b7f76ccef1ab9d4143258270bba11531b77fd9b74efae4ffacb5c9320. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/UKJR41700042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa68dc1fcda5d05e0885731782032400c13fbdfb20432a07f5917e105416b1fa4. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/UKJR41700050.
In The Car Crash - Headgear’s Always Crashing In The Same Car Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e3041139f96375d646789d3e0c272cae90ac94dd9d840cc04b8cca20d42075. 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/UKJR41700064.
I Dance Alone - Conneticut Ron's Return To Saigon Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8088506120a372540560634defa2ff92360525fcfb60f4d317599b12cc5c542a. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/UKJR41700068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28be5634d057cec20bcb537fcb6be3cac82687d4b2277afdf92fb84f3071d9cd. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/UKJR41700070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5934431bf19ad3f845b84ee55d888cf4afd997112e1f0a9889f62c1980a6ab51. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/UKJR41700071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed30782f5dc56940ee8c2f6fa349493c6a5b2fd2b69246cc66831e67a87e2fbc. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/GB8KE1857456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d22a758c288d065cb562db516afef68d2eabe0bd474b7b9d94a00ec68c36b89. 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/GB8KE1554052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7fa7f3adf23fd41bdcc270bc4e1c00b8bcd6d99228553c7ec658b9200705db2. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/GB8KE1358859.
Someday Son All of This Won't Be Yours Either
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6165beddaa7b64cf9647d1d1fde0362eda1b3e955bf0df38bc19daceeac15b4a. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/IEADZ0910005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6460f30ad2f0ccf213419900a504954811da9a4a7d83c8ca21672bb8651dde. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/IEADZ0910010.