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 0x61459c2108f9b5d8f55bbcc0341ba17bea8669081258dff3edda54a7616dfcdd. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fb6d24c3-350a-4257-b465-d917cabd0eff.json and https://artists.proofprofile.net/proofs/artist/fb6d24c3-350a-4257-b465-d917cabd0eff.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Brodfest - 15 Godina S Vama - Domovini S Ljubavlju
100 Originalnih Pjesama (Splitski Festival)
100 Originalnih Pjesama - Splitski Festival - Ništa Kontra Splita
60 Godina Splitskog Festivala - 60 Velikih Hitova
40 Velikih Hitova - Dalmatinske Pjesme - Noći U Dalmaciji
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 0x44cc99d206d0b8f4771018a982aa5cae3ec2ce91591235bb54d54b36aa00f664. 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/HRA048606266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2a9b0912711d868c35fc685fade648d107000531508f7f5f25e11b3cb51174. 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/HRA040617367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaeea12a87c35222eeae1e7f395fcb3972c7bdb8911927abfe1c9e22c5e3f7b6. 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/HRA048013362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1dd292822332614cf8ef507ca366030e8aac76b72d42404a7041647f76ef3a5. 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/HRA260913804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8686ae1921adee4fdc36f7cc540818aafa28a5ceeb6b573e3751aeab8f33c116. 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/HRA260913703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79cd25052e851cb56485c6220ae0028c732fe65180f00efbf58a2d94aa03b33c. 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/HRA260913807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa061ddfb4a36a045d48aef52b1c0c0eaa29755dec7a77c0067717154e18a174. 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/HRA260710430.
O Ljubavi Klapa Piva I - Jute San Se Zajubija
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x306d9e649dd53e058060a39fd29a5404bc4e1947e21fe0d8227d702f19a6ad53. 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/HRA260710927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a0b64faa44a5f1f810e4d6f711397e3f4cd6e809beedc248a7c3918bb2f6b1f. 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/HRA260710436.
40 Velikih Hitova - Klapske Pjesme - Samo Moru Virujen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x660841018b4c29c8548e5257bc7e055ffa3bf989597c7092a32b2ce298203e5d. 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/HRA040644759.
Dalmatinska Šansona (Nove Skladbe 1998-2001)
Šibenski Festival - Najveći Hitovi 1998-2006