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 0x99a745336ce004e2ba4271cdbd53651ffaf2eedec8306abd2769c8d605195b91. Chain 2 (Bitcoin): anchored in block 953750 (2026-06-15T06:12:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a94cad36-5190-4562-855b-febde29eb18e.json and https://artists.proofprofile.net/proofs/artist/a94cad36-5190-4562-855b-febde29eb18e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Õnne Valem (feat. Eeva Talsi, Villu Talsi & Laur Joamets)
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 0xc94ef7e45507255853a39cff1b5acefa750bfc2344d3b141a01b477da6501e1b. 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/TCACK1503983.
Kättemaks (feat. Eeva Talsi, Villu Talsi & Laur Joamets)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1af5260dd7d28b5f0f936a88e563449c4fd9ff5b4220ab1543ce8442d93bf173. 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/TCACK1503984.
Soe Tuul Juustes (feat. Sepo Seeman & Aleksander Seeman)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa720f6ec1ee4f741ac879f4b251336a7db437bf9b048154f84642cbd5fa1d55. 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/TCACK1503985.
Võit Nagu Valatud (feat. Sepo Seeman & Aleksander Seeman)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf00a78e12c5afd98e26816a6fb8663dddc8904454ab3645fb3e1e5f039d3b255. 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/TCACK1503986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd11df37cf21424d359a8fbf65835ffdac2514a17c08a24f8c0e30736101925e9. 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/TCACK1503987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03142aeba1a5feb9f8545c2e5216d52550d6607bfc406395e0a67a61678d6c8b. 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/TCACK1503992.
Kurat Me Jääme Hiljaks (feat. Jan Uuspõld)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ecef94a540b9b45aee962465f23e860252c7785d3e39735623352dafda4e99. 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/TCACK1503993.
Eesti Kuningriik (feat. Jaanus Nõgisto & Tõun)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b4ee515526a43b4d1e9b802ea1bc82d1e49f44d4ea93121c848dde4f3dab593. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/TCACK1503999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc94241a3d0ca46fbf4936b9ec93a11b05aac271f3b537bdaa4fabe3f87a9e17. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TCACK1504004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x253825b4b3772a53c55deec3d7e42c45fb184f9a737791ea14851f09f7bf4656. 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/TCACK1504005.
Vale Mees (feat. Kihnu Virve Pereansambel & Genka)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe69b5806e03323dcb002479b71527c47d3e6db5ee8c58ca545b8a547ebb41cd9. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/TCACK1504008.
Tõusud Ja Tormiveed (feat. Ivo Linna & Robert Linna)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f89c752e9d7849a9cc3ad5fa2619ef1b8c6d8aaa75c8c862b779127d563cccc. 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/TCACK1504012.
Kuuskümmend Viis (feat. Ivo Linna & Robert Linna)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79131080225b94c0a50b7bebb58ef600a6abe772e57980e262e0693df20431e4. 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/TCACK1504014.
Kergotamine / Seenelaul (feat. Jalmar Vabarna, Zetod & Aapo Ilves)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00dec325ee38f375099c9562bb2dc3b5f7e28c9f31ec8e55c69e0910d1441464. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/TCACK1503990.
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
Ootab Veel Palju Ilusaid Maid (feat. Karl Erik Taukar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32cd4aacf7a16416ab39312af8dde6862060cd04f9b4e7a4b9aaa6647bd7f9b0. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/TCACK1503988.
Tee Midagi (feat. Jalmar Vabarna, Zetod & Aapo Ilves)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ae395e56737855f77ba094cb7b9ad12b2364c12b3969ea2c9b5465decd176f. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/TCACK1503991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ff7452683d5a6803468ee8d0b9f3df49c9f52a2d1324fdfddfe2f97811554c. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/TCACK1503995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfec426d61bb17dcc5ac033ff1d944680b539d8fb6533015503245da5ec8cbc6b. Chain 2 (Bitcoin): anchored in block 960419 (2026-07-31T15:20:33Z), 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/TCACK1503996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7004994b81bb4fecbcf2009b68837c66b74c73a6037156b776694241d790760. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/TCACK1504001.