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 0x26d0c125b0305b26cdffe4170b6e7d452afaba26654912990f05b0d940b30d6a. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f7d036a1-780a-4d40-9ac8-17c969130815.json and https://artists.proofprofile.net/proofs/artist/f7d036a1-780a-4d40-9ac8-17c969130815.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 0x52289f6d8bfb326b9292e2331a40e222720696ffbdadaf18196bfddd9149aef2. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-21T16:30:05Z), 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/TCACO1651128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa62e919412e467e3d17d6779bd2d33b8bcada9518132fc3d00cc0938ceca96. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/TCACO1651132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d0a96319c2df402b957d185e9eb1cc8fd84c3f9f72654ab7fdb6fa27bced50. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/TCACO1651134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb02b7239394749bf3aa91c2551f725a0c098934d07d8f8fac2961d3ab142c49c. 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/TCACO1651137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1d29b2295ba1fa7831ed52163b57c329964e519c83332e67dfbdbbbbe4e0395. 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/TCACO1651158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd17e8096601ebe8f9120669a10d6d5670c22e52e40a5a19c437434c86ea26fa7. 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/TCACO1651138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b2012f23c3103c4a9b6f5e62c66df5ef37c1a27c1585beb25cf9221756740b. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/TCACO1651140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbff858d22efe77133d3d91fffbac4854ff55b90745df8515705f8f4052476e7f. 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/TCACO1651145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37524dcf37c856604e90e05ebfe19eafbbbcb5bbb5f3fcf97f1f2c1b7f49c226. 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/TCACO1651146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd57ae5411e36ef2eab9e722bc8d405663085b55f4f85a156c4087f4ff3b474. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCACO1651147.
Tu Presencia (Espontaneo) [En Vivo] [feat. Barak]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x557b12b86f158c89bdbe5a03c4ce57d584b66f5d3c37b9f2298116298f26a49e. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/TCACO1651585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0991ae8478f6ca8bd4f23b8d633321c3bd2412aa8578e371f383e4c24461220d. Chain 2 (Bitcoin): anchored in block 957012 (2026-07-21T21:36:41Z), 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/TCACO1651148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25bf4170aaef4f8e2bd269aef02680e6a057150881d837bb7a35c6b343791d6d. 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/TCACO1651149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d6bd2ffe76eecb469c5458ac300798070165e8f64f8beff0772a6069127da21. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCACO1651152.
Nadie Me Ama Mas Que Tu (feat. Carolina Ponciano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd9b4f03b61592b844c71504227c7e9f60af3a37561e454c15bda44fab1c31e7. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/TCACO1651144.
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 0xb9cce25b61733bb8479a3b5726805c6d2e18cb73bf187ea83b520ffc9bee6bd5. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/TCACO1651161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c9303f126b2ef203feffbf267c3678f4ec3d0cfd7c5af3fec1b747b047013e. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:38:53Z), 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/TCACT1698054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b637a9ad45e7c8b2221c5a9bdd592e59698c03c7180b9746c609d767c66dd6c. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/TCAEE1962678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8153c77cf09bbe5f3114ededf9efc093c374074c1393a7ef5430417260fcd62c. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/TCAEE1963586.
Lugar De Rompimiento (FLeiva Music Drill Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea045f2125779331d64ff6285f0092519ea14c4e6a14bb1182a96fa7c66855c8. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZRP52204203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15137d8acec9b2b1c40b4e430a30ee495a429c4777cfc46709e6e84268175fa0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZES82357818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfceee2c0835425c2dc7fffae2311f3a59702d3ab9d42d14175f436249d641ac. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZES62594129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e619fbc237988ea8c319cf2bfa873b12845df0c39c908756b42683367c8337. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QT6E52560770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x339d8f9f055087395632e3cc0a228ca7f6eea4f1596799dd68e7b145661e4495. 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/TCADU1828747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c5e224586a8866e039fa590f1d6e3ed7de25269027e7babab466695be0ef78. 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/QZES92152736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaedf3c4eaa26f0720db4a5bbb6e20f21a575482b24f7f9f09898afe6b7f2a413. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/TCAEN1994631.