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 0xe5c7c34ed6b89295180c782334e5d842ab54ed47db626e1f466e475234c86655. 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/c69b81a2-855f-48d2-9f8b-251123ea0204.json and https://artists.proofprofile.net/proofs/artist/c69b81a2-855f-48d2-9f8b-251123ea0204.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Rezo Para La Tierra (Jungle Kitchen Remix)
Rezo Para La Tierra - Jungle Kitchen Remix
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 0x01c260ddb3301217f779269ca0ee56c5e77ca2079344957f93f66034dc23540e. 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/QZ5FN2423218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80bbb0597d1b4137ca5f8d0b9fd8cac9b8e5496ba0955a2a6039dd8373932d53. 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/QZFYX2147970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed105dcb78a95625a3a2ccda8536b2249bd627aad69e9ef72231ebeec1523ffe. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/QZ5FN2423126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a33d86441d9e6b06167dd4bef312e4ca93da927fa8101a06ba8c5251fd1d083. 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/QZTV32455876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadef8d42d599027cfcc5bd37eeb57b61598b27683387c3f7c0ef0b6d0c64a19c. 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/CA5KR2198860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadef8d42d599027cfcc5bd37eeb57b61598b27683387c3f7c0ef0b6d0c64a19c. 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/CA5KR2198860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b28bdd1ee0669d2d183ed775db84e1ed009a9479ad4aaf4607b9e2884887f12. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/SE6A92182505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a33d86441d9e6b06167dd4bef312e4ca93da927fa8101a06ba8c5251fd1d083. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/QZTV32455876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3516f8c0f737dec45f2aac4beaf88ebfff042e27a89b265bd25bc04b9238d590. 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/CA5KR2147230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba6a1993a9ff7e094fc2ee419aee79cfda7ea1442c5fb656109f304000fe4fe. 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/CA5KR2147231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0162c8ca9fda3e9f082895870f9fae5ebcf8a62b365d6cde94e05a568a538297. 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/CA5KR2145944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4882d4b06e377b75be52bac3235d5dfffb42c7e37f121a57edd7920790ecd8e4. 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/CA5KR2147079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x161ea9ffec442a2c70a690f41bb5470d58fd664406a089d35fc5e77113a1e612. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/CA5KR2147232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x819f24a04e10b75b8abaeedafe246fadbdb72590d14430d04df9e47dfd852bb5. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/CA5KR2147233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52941745c8ff4712341374f1dea148ef609fc88a35fce1116340275570fb0b3e. 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/CA5KR2147234.
Hymn of the Dreamers - Joaquín Cornejo remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdea44fc52dcfb99b85e417582ccf8458f674f12b01b1e39d7ea42925ca35864. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/CA5KR2147235.