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 0xc2319b64d97cb07ec81db29396f9484335e254b93ab6364ef9bfa8b8816feb25. 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/9cba60f1-19db-47ec-883e-ec71eac47b99.json and https://artists.proofprofile.net/proofs/artist/9cba60f1-19db-47ec-883e-ec71eac47b99.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
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 0xde5f651df46a929c63c809ade168fb4d5de289391a9700f6c7876456eafc4e57. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRUM72102531 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4023b4fa83540a41b359855140a4af7e3502eefa5c842def53716b58fc9c4f7e. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRUM72102529 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x887a36d0e07574aada42fab09f0c49101703afadafb0e5c14d779a59ec5f2136. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRUM72102519 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeab019d7e509bfbf5ca2538853878d483588000afc5bd8778b20247ab63440ae. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRUM72102536 — a six-check JSON result.
18:21 (The Greek Trilogy) [Sail To Freedom 200 Years Of Hellenic Independence]
I Mana (Original TV Series "Sasmos" Soundtrack)
I Mana - Original TV Series "Sasmos" Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1fe40ace6c42e0b2775acb917d79ca2e659391509a9006cb4701fa237eaa130. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRPA12200275 — a six-check JSON result.
Kathe Mera - Original TV Series "Sasmos" Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd3655ff2a92802e548071658d60f4a36071bd53d11b119904bb8f9237a372ad. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRPA12100279 — a six-check JSON result.
Ta Antitheta - Original Tv Series "Sasmos" Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee628a1e04b632911dc1376bebd88502a11c00d045d1c584c41b474fefbbfaaf. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRPA12100288 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb66a5e18a06cdc8b55abc5d69115f0d238ab557ce491ee7ce5dcf45acd59610d. Chain 2 (Bitcoin): anchored in block 957830 (2026-07-13T09:15:55Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRPA12100242 — a six-check JSON result.
T' Anikita - Original TV Series "Sasmos" Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835aaddbe73539f0fd1d14c6d03af37ba6a57be4bad0f35ed9d6a257878b33b7. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRPA12200176 — a six-check JSON result.
Petrini Kardia - Original TV Series "Sasmos" Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ec15ea41d188edd23ee80f556e9936376a7b81c11467aad2c645d03b80df188. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRPA12200220 — a six-check JSON result.
Filos & Exthros - Original TV Series "Sasmos" Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe167bf769c7239fb6aafef782de57266e2eef39421627bf34e9bd0917d316dd3. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRPA12200276 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1fe40ace6c42e0b2775acb917d79ca2e659391509a9006cb4701fa237eaa130. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRPA12200275 — a six-check JSON result.
Mera Haras - Original Tv Series "Sasmos" Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa342c705e81b3b23a66270311aada1d0b84ffac1343d5a7e6b4b2fb2608769. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRPA12200303 — a six-check JSON result.
Filao Stavro (Original Tv Series "Sasmos" Soundtrack - Instrumental Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b7efaac73facd9a14482c127c7bdf4ab0faf6d0f3eb70b6b195d10640197cd. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRPA12300586 — a six-check JSON result.
Ena Palikari 20 Hronon (From Original Tv Series "Sasmos" Soundtrack)
Ena Palikari 20 Hronon - From Original Tv Series "Sasmos" Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ad09bbc41fe560a58e724f4402b5edae47c864cc993cce58e2f66b247d9ca9. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRPA12300715 — a six-check JSON result.
Ekei Pou Klaine Oi Aetoi (From Original Tv Series "Sasmos" Soundtrack)