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 0xcc44e1d63d0f94568c0ac47a19400e479fce28ca524c51fc4e17ccf9c360b66b. Chain 2 (Bitcoin): anchored in block 954659 (2026-06-21T06:14:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dbecfdbf-7221-4a40-95ea-4cc812aa90e4.json and https://artists.proofprofile.net/proofs/artist/dbecfdbf-7221-4a40-95ea-4cc812aa90e4.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 0xc2d07c6be3960fccd0661cb6bc47b2f3de8ee0ea9abee61783a900da055c6a63. 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/FISBA7300277.
20 Suosikkia / Muistoja Pohjolasta / Valkoisen Suomen lauluja
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x535f2393148a73b5d33587f0ac2df0d0b0d4d4f16c0f72781a79713c8a219730. 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/FIFSC7000048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed10ea5e573611382a57457e70a1f3a92b064b3b9f91002d09e997d4d834d90. 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/FIFSC7200026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0452f10df8fb2aef31812327b38a3ca30e35300648fd38cc8e21272c4c42b7b6. 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/FIFSC7000042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea56657e4e5dcc178da269c8dbfd966778fa14fe968f7bf6f23c8f2f2be03299. 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/FIFSC7000044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05024b5ced9894b927bf3540bc748962ad75400ecc4abea461bc253472bde53b. 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/FIFSC7000047.
Muistoja Pohjolasta - Valkoisen Suomen lauluja
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed10ea5e573611382a57457e70a1f3a92b064b3b9f91002d09e997d4d834d90. 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/FIFSC7200026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0452f10df8fb2aef31812327b38a3ca30e35300648fd38cc8e21272c4c42b7b6. 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/FIFSC7000042.
ITÄMERIKESKUSSÄÄTIÖN ÄÄNITTEITÄ JA YKSITYISNAUHOITUKSIA
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfec6653a47b75a4ccda87485924697cc9456085fd63223bbd3a4ea22405517f3. 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/FIFMF1221454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dfb65086e64839a2f436495b326cb4ec68646637745a2889ab842fae73b077d. 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/FIFMF1221456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea56657e4e5dcc178da269c8dbfd966778fa14fe968f7bf6f23c8f2f2be03299. 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/FIFSC7000044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0452f10df8fb2aef31812327b38a3ca30e35300648fd38cc8e21272c4c42b7b6. 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/FIFSC7000042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64bcbf605a637cdb969daf04ce745ed047a72ea3d909c30d9087323e4f30edd. 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/FIFMF1221458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05024b5ced9894b927bf3540bc748962ad75400ecc4abea461bc253472bde53b. 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/FIFSC7000047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b70e2dd2040e3f96f861f0c93523e37caf54c4bf779624fb12d6ae91ea3a9b. 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/FIFMF1221541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35f5079bdebd98fa37c406dff24b0acaafc4d89a17127de09bf4f54896c2b63f. 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/FIFMF1221545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c8e0837c73b4481296e6df426920dead0e16c2db929342c5ca732dc4e092e0f. 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/FIWMA1000250.
20 Suosikkia / Veljiksi kaikki / Työväen lauluja
Kissa vieköön! – Uusrahvaanomaisia ralleja