BSK is a three-letter abbreviation that may refer to: Sports OFK Beograd, Serbian football club FK BSK Borča, Serbian football club FK BSK Batajnica, Serbian football club FK BSK Banja Luka, Bosn
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 0x89b23baf792ddcb6bb33c2f0860a305140d0b1df34b1f6892b4b6f523ad8ee91. 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/e6a8a1f1-c8f5-430d-aec1-f3a40e7f28f8.json and https://artists.proofprofile.net/proofs/artist/e6a8a1f1-c8f5-430d-aec1-f3a40e7f28f8.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 0x8e42808be68d0de926f4c21c537597062c37fbc5d0c05db486b3929462cd83c1. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZES72218716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf90f94e2a56bf6a2099e1a4ad4c351f419530c55c1388416375160467703f0ef. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/QZK6M2293077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5859255f97cbad2505fa3a78af7d12bf29de5089bc74ce1e010f17059666c1d7. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLC062374904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb170d9e325c79cd828d0a5bf49dc0fb6a8ebab6a0b7710639468ea550afc93e. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/PLC062389811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91f37ed939dc054d765d9d17a58d34a1e1e09bbd25f480bff5693fde69dfe90d. 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/PLA552400447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc077c86dda852345bcaf7433d2cab7bdcc6a7ddc605031f928a7b753b33a1656. 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/PLC062432316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aff92ba64cba05f14fcfcca07b7d0895050458839b53d2221f0cf953974f4d5. 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/PLC062431848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093098da37bcbf27ea17865a6415f673a24cea2f85a985b7d629eb6ea98f5a6e. 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/PLC062429539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf34861b6efb982277291acfed048b19a003bbfc70eb5e1fa00164f71e34ee664. 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/PLC062428679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b52a95c81ab3d24eadbf6da345d88dafdff418553f958d0559452a90e6abe53. 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/PLC062429157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093098da37bcbf27ea17865a6415f673a24cea2f85a985b7d629eb6ea98f5a6e. 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/PLC062429539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aff92ba64cba05f14fcfcca07b7d0895050458839b53d2221f0cf953974f4d5. 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/PLC062431848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f976574d56b53042a110df5fa36e7c2863c6d50abe0e08f94c02aaff5713343. 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/PL86E2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf34861b6efb982277291acfed048b19a003bbfc70eb5e1fa00164f71e34ee664. 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/PLC062428679.