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 0xef2506e24816dd004d16ef94ee6913694e634e4cc2ce3080ada839fd9ede2129. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b92d1a3f-29a2-43c0-89f3-626cc2901623.json and https://artists.proofprofile.net/proofs/artist/b92d1a3f-29a2-43c0-89f3-626cc2901623.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 0x5d5f501019ded24743a060ceab54232f07e2a053c1e7f95f05d336d633c57771. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/FIWMA1500106.
Kapteeni käskee (feat. Lord Est) [Lätkä remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7414033f2c7f162c29249968aca5522fa7427d9a3357c7f2bf2b67b7976cd00b. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/FIWMA1600147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec37c64f68f23da41d31ef195395879f20e1803709b2833c305a138cefd8ff50. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:54:12Z), 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/FIWMA1600262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b8c04073cb47e6cf50d1960328bba6f78e153b51022b5924ae409bfef14a995. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FIWMA1600366.
K18 (feat. Kuningas Pähkinä & Setä Tamu)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x893ea09ce9893197ccfbb8303ea36ce9a1af20e994675e4cec1ad8decefd7853. Chain 2 (Bitcoin): anchored in block 957541 (2026-07-11T08:23:18Z), 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/FIWMA1700081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b5dd63e49ce5a583bf69db105fd638005835729653de6850b14a0953b7a2de. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FIWMA1700270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x893ea09ce9893197ccfbb8303ea36ce9a1af20e994675e4cec1ad8decefd7853. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FIWMA1700081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5f501019ded24743a060ceab54232f07e2a053c1e7f95f05d336d633c57771. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FIWMA1500106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b8c04073cb47e6cf50d1960328bba6f78e153b51022b5924ae409bfef14a995. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FIWMA1600366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec37c64f68f23da41d31ef195395879f20e1803709b2833c305a138cefd8ff50. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/FIWMA1600262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b5dd63e49ce5a583bf69db105fd638005835729653de6850b14a0953b7a2de. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FIWMA1700270.