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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1590cbfd8eb889575cbd768838651718621e40ef6867720c282ae9a4e1688ad9. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/64ed9a57-76b1-47e8-b974-c06c43bfc222.json and https://artists.proofprofile.net/proofs/artist/64ed9a57-76b1-47e8-b974-c06c43bfc222.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a46fedb161c2d09ca1af095934a1677b64876056ca81ba9ab7b8fdabfbcce1e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR1DC0800040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946506f89405f0d78c640503258f9b436f2f43e259caae8f2d312f149d823059. 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/FR1DC0800070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c0fc49c9172c8b18d5a90b5bf17c7a71c512d347b1216ba9d9710ef8909caf. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR1DC0800090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24483af860faf6b05f43cf7e6e16d5ee62a7999a40e0b46e540673115d1b3080. Chain 2 (Bitcoin): anchored in block 957244 (2026-07-09T01:44:02Z), 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/FR1DC1000030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd914008f54bba21b75173124f8959713b137d701478b24733cbf323f31768514. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/FR1DC0800020.
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 0xb6c5a1052ff7462b913739318546afc9682de40c4e080713bae998e063d2678f. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/FR1DC0800030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f35472b7d6b1c97be61df37d8e0196b927d3e255464d3d9893b2ea08e499ef9. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/FR1DC0800060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa0d346ef238e61ad185aad2e208773bd381aa6a402bcb1399c6e52720146ec. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/FR1DC0800080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57e261764b8c3fa0b688fae8e72509b9300f2cd67e072515e4d2b5b3dc704c3e. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/FR1DC0800110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf881e50e14253cc8472fa517167a8f072f6a6d04b39fcc751b862207ac8bfcd. 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/SIC032100146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba8a4da78b6b7ae9ff498439781827c6a5b1ebe73e43707a484b2e135199a3c8. 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/SIC032100147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9419a833d85465ca1447f1d2a8d1e97c0c1ef7218d241196d19392ca83a0a7c2. 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/SIC032200151.
Spet je cajt da (feat. EZRA, Drill & Ghet)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82aa7a1976af73c1deca682545a1830a648f9e7b3de24ae1eedbdf057c360c55. 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/SIC032100152.
Ulet u moj templ (feat. Jović, Ezra, Skova, Shorti & Trkaj)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1332ada298c78ad71fa3ef06f997c5423a27d6718400db095618dacb35e8279. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/SIC032200153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x881f9bfb9753610754fcce3184c67defebd6bfdd57ea3101e36ce83df706904d. 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/SIC032200154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd33869831c7f6feceb6c3103e810001e6da5161b86d2dc36e9f0a4ac701799e. 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/SIC032200156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5771c459ac192f671cf9e0190b48e78e54e841e6c1e57caa03a7d0c6748ac226. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/SIC032200157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf490de7cc159f6f800633844475eb4869ff59f99f89ede5fcb6307096ded54c6. 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/DKA2R2100402.