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 0xdc2d6a1ff41e908274fb7f3502c78ee8f49dd7b884913c6cba0006a7f2735541. 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/fba974e4-c661-47df-9bcf-a9f737b509c4.json and https://artists.proofprofile.net/proofs/artist/fba974e4-c661-47df-9bcf-a9f737b509c4.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 0xb1a8414d1ca42593ec6a98f9f569703ffd7d3d8790153ff825c96df65a5ed348. Chain 2 (Bitcoin): anchored in block 957522 (2026-07-11T04:46:56Z), 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/QMARG1950058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x670621da2ae7e6c9975241ce06d033d957de0f1d6e6bdd15115ba15f6c9f5535. 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/ESA012095076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ae997d40965346e49053685b5ea85c90ae0174c1e1e7baf231462c63e09168. 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/ZZOPM2105612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade34713e671fc4497684d5a84ea8f58c59a9dc42476aa06a6f46a0a715e8f35. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ZZOPM2238206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80bf7b30284b8d4b64c0fae46e0477e8e59fb4a154ffa3e14d96c60fc07c983e. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:07:22Z), 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/BK4DA2300395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a834d4bc8d39bd5535cef1017bd23d2a0229907207aaa8b89f53c425d5492d. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/ZZOPM2223461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd65089da6abee8e1ec1b47517910e1f242d845a9d16f2c45fec41b9fa42b32ef. Chain 2 (Bitcoin): anchored in block 958369 (2026-07-17T08:01:54Z), 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/ZZOPM2228150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2634aa037fc52cf78175eae92ba53febb17b1f4ae0a2847f9698751145e25560. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:20:52Z), 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/BK4DA2300397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2609b364f129edf56f48ca16d68ed82e917be1fa319fd28dee509f38d2234877. 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/BK4DA2204225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6552f6b18b474730d93ba10a6e9ce00e4d8e1688ba39cc436d6dbf5ecc1d11c0. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/BK4DA2413745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bdf5e6eacbc55f6b818fdd22fb185f532803ce10eb407467974a7f69e8db7e3. 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/BK4DA2427702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6552f6b18b474730d93ba10a6e9ce00e4d8e1688ba39cc436d6dbf5ecc1d11c0. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:34:03Z), 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/BK4DA2413745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a99e09242a66ac8b5f1370aa9b97f442165769340167f0a0802578e49b87fd3. 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/BK4DA2506203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6552f6b18b474730d93ba10a6e9ce00e4d8e1688ba39cc436d6dbf5ecc1d11c0. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:10:20Z), 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/BK4DA2413745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99102e37d8520256d9d57ec9f11f5495b964e9254df35022efefd124a275c779. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:24:52Z), 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/BK4DA2511194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38317d1c80c26947526c7669fe6298b8b613efb4e65f80cc02d5ad70cd82a125. 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/ES5152500037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d4db708f28d22c7f8d147b4f892515483dcc0869500e579e547c7a1dae16def. 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/ES5152400410.
Wonder (feat. GOMZ) - 1016 En Directo: Fin De Gira
1016 En Directo: Fin De Gira (1016 En Directo: Fin De Gira En El Sant Jordi Club 2019)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ad0d4d5daf42a4c5df31e0c64b053377c58c48b0831590127bc8684c3bd681d. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/ES5702000980.
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