thumb|250px|Ziwa ruins, enclosure view from a distance. Ziwaformerly Van Niekerk ruins after Major Pompey Van Niekerk who was second in command of the Afrikaner Corps is an archaeological site in Nyan
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 0x4f9b7622d557edeb0e9ce758e42ee61e0a10c0064ea3191a09f5ba79d2ae6909. 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/1d07827c-1de2-4d62-a8ad-b84d96997113.json and https://artists.proofprofile.net/proofs/artist/1d07827c-1de2-4d62-a8ad-b84d96997113.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Relaxation Music for Pets: Soothing Sounds
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 0x82aed36f55287229a785f1c9f46e92737c996982b10e5c4ce76af219d3367be0. 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/QZWDD2433585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8713f9bce84115bd342daabb74541eb41149136a30fd253930c4c81b19873e4e. 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/QZWDD2433629.
Calming Binaural Birds: Soothing Melodies for Mental Clarity
Music for Peaceful Unwinding: Relaxation's Gentle Echo
Hearthside Sleep Harmony: Gentle Fire Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfac11c9ce4f2606f1ce778b97ae1fa9ad0d90481e923e447b8443d67263d086a. 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/SEXGF2396723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c3f4fb7fe31d824a081eaa9682d05207b92b765993e4ebb36952a897e45eaae. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/SEXGF2396507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x852a59e3c0b3882d7d4e7d5ebb4f412a40530d724dc0d0bd87ae973ac89a7a53. 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/SEXGF2396508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e24e5e9d433e189100db31a59d36fb41b03f2776314fd4d8747a25f28225386. 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/SEXGF2396288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d7ce600d3d71bf4e58acf15c5a1a2467b1d342f0a1532c5e6de1cd9f74e0577. 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/SEXGF2396138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacbad20b3e61a6f323511907d4feec03b92ee9960bea8d705bea0c20c5ef9124. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/SEXGF2300205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aeed9d278699beb380bea96a4df86ff7dce9959006aef95d011928386eacccc. 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/SEXGF2201781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d2d637437d279553797a6a9936a5ea3c4fcad2d86a17c8fba7b62c42de0eba. 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/SEXGF2201775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e49cd62d13e5dd125fb89ae326dc8d9a31e0ebea048a73380d1797632a76e0. 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/SEXGF2201164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb971a196ccf6c43c142cbea9b24b33cc1753ebe1b24a1f30fe163428471b427. 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/SEXGF2200889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a9109f69f35fcc45528abc66a93e79a533f5f5d9c8cae22c2627a8642593c1. 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/SEXGF2199608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29dc730e33e1d32cbdc57c37316046e91d1533c84879cb594af36c51158f3439. 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/SEXGF2199482.