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 0xd1b2a6c528409eca2800027a629245ce8ef752ec356084c0f968cba3174ac14d. 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/9f0aa830-1db2-4f14-bd6a-e97a222787f8.json and https://artists.proofprofile.net/proofs/artist/9f0aa830-1db2-4f14-bd6a-e97a222787f8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Daug Kas Tau Sako (feat. Vaidas Baumila)
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 0xf0137162f42429772bfb96b00d72e6423d3c01d430005728c7738020449a3f82. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/TCACA1477692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f9dc48eafff9a53bacb48853fa8d33fcc4285a95ba21928e27c2f78dbb83929. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/TCACA1477694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3132df9790b8999c4133cc87cef991190ff233fa14f56b02e55f8d710f65bb35. 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/TCACA1477695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda57522f06eb26db4e0c58d4fa48a643843eec0d03939884f6849588fa99e9f. 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/TCACA1477698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed4ca192fc03075ab3d045c2c76e929215099bde3c68ff5edc555f3c8132e05. 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/TCACA1477701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x253e7bbdb82947339cd47b688c8c3967a6e2562b51785eeee3abb076f0bacd5e. 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/TCACA1477702.
Dulkiu Spindesys (Muzika Sokio Spektakliui)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953a82b56990d537c6bfa17795f7d678170d4a03b488274d87f5b94e0af0e573. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/TCABE1279123.
Visi Kauno Žalgirio Fanai !!! (& Fc "Green Death")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e62f411d82ded6e0cee79ebb48e785a8f5c4e6e2bdb161753bea883cf34d9a. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/TCABE1279162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7f165d8349e681f6be35b182b9998a8b44a141a4c90f9200de782c39875cf40. 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/TCACA1448707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f39091b424548f2f10cc477722db5a5f760fa4a664cf675e9eb843fd5ef9c47. 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/TCACA1448713.
Mano Vienatve (Soul Edit) [feat. Vaidas Baumila]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x393fd6a14ff8ae6dce3a7d13eae91aa0b4980205248db0b3b7a431884dddd09e. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/TCACA1448720.
Tu Taip Toli (Acoustic Version) [feat. Dagna]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb64cdd60d4acb08ce2935834d4ac90e37b79aded51efec1c44ff4a4fabf42dec. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/TCACA1448722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2da211330bc63aba977a136062e68346afba09f5e62552b1466c87ce4de10ca. 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/TCACA1448728.
Laiko Masina (Vandenyno Selekcija) [feat. Monika Linkyte]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7089874cf283c44a406f27b368127ca6c28189f6db6cde52c7d9321ee7d0c200. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/TCACA1448737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12515343029a06947338b3827e250f2811f5229fcfc7ca97154c3bad57fb0f06. 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/TCADA1786262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bef366d0994a99c5577686413461226c7d7a200bdc3e813f45a8990203a3c6f. 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/TCADR1836300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa8a16469019e98c37eb9a12b128a466aa5e00e1a439227b35dc82c9d9fbf42. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/TCAEB1972638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4090dcb741babe2db50389fa810b5dfd3140a3206cfd35a29a31784fb9086a5. 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/TCAEB1972759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f5d356358ccf0150b27f6a7c105f8ede0b6642257cbe5395adce0bd0439e30. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/TCAHM2309931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb393a1f12f6696098156bc99acadca2f11f590c68ca8296350d4a47afc6231d5. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/TCAIZ2458904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x444d4c2f75d47fd62536df8dcecec37d5b488c7a62e563fe249e8e2a24a12a89. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/TCAIZ2458997.