Solec () is a neighbourhood along the Vistula river in Warsaw, the capital of Poland. It is situated east of Frascati on the southeastern edge of Downtown and south of the Powiśle suburb. Solec was a
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 0x68ef251308a7306dbad079e85f007f46df289dbd262dc7c5ffe6e33314034297. Chain 2 (Bitcoin): anchored in block 953777 (2026-06-15T11:52:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cec43c0b-fe07-4423-a27f-2ef947e62246.json and https://artists.proofprofile.net/proofs/artist/cec43c0b-fe07-4423-a27f-2ef947e62246.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 0x997a9e4ff8d08a616e860ec61a8dadb0896673dc8e5fc50a0425cba00ab54309. 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/SE6XX2344669.
When The Sky Falls (K I N G D O M Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29f57a6e4fe8a7be32df5dcb23807f6f276e2250aaea99302ef7617f2daf810. 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/USA2P2240205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d5a0ed0f02aab0f3c5ef88bd534973b455723a69e97ea5cd9879ae4db28e7f7. 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/USA2P2240202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd7c7cb1fc5a7e1b16d0326c02c71ede6077fbcbbc10a249fd47c8dcc589f019. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USA2P2240203.
When The Sky Falls (Celestial Void Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf41596435619e900171da33bc4111c3b09cf3a0134ab47f03ebb98226d485092. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/USA2P2240206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda5ad9fcddbec719d65cd1345c1de86bef9536a5361574d51053b3ed2067e537. 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/NLQ8D2500059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a9f4859d88e5f2469790549e4529aef2456c8dba194d4c265cca50eedf87bc. 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/DEUD42442153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6436eb6ce11350ecbf3dde166bee4662c9990a22abc3d321d7642a6369ad5f7b. 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/QZK6F2138046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa346edda2fee570d2f1cc3975b0b0ed8e329c472cda77404981dac0d71154506. 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/GBKQU2538775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3efcf76cb05a43cfad50d78f3e783bb099f64c23b8ad0f332dcac81cb8d58ab. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/GBKQU2538776.