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 0xd4079aa137f355faa0e300354883c37d7c4cc1ef947c0543b96929462e86f88f. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ead5e10d-d990-4604-9544-124234f7e941.json and https://artists.proofprofile.net/proofs/artist/ead5e10d-d990-4604-9544-124234f7e941.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 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 0xc86510e4f9b5558560638d81f4ed9580a9dfc22d9827595731ff01d2d1d5dbfb. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/MX1091010175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5497039b992eda8a624c4fcc3b6bb2f9bb1b40b5eca0f01d0fb619989c62ab9c. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/MX1091010178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x751c211450b2d9fd528c403c1964c91c807f837b58ee6e4c606b07422583f83c. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/USGH80712030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd2270c39d89e3d5dce112c04916c7dcffaf979892b8e5c29321fe4bc9088ca7. 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/ESAAI0213252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df50db585236f8e6c36f590282c91c9bd9e4615da85594c3701b70c9ef61489. 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/ESAAI0213273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e939616c24823a38cd1754810d9b2c2debfeeab36e84df6280a8b8bc9ec169. 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/ES6100678276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad0d8cda415c115da82accbf7bc1ae41ff7ca842019fb3f0c575f62b6bf8666e. 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/ESA031431437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1610320ed51dda95ef81180dd2fe6198405c864e8e42406d863ad48f33cf3dd6. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/ES7630601660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x773de27139c45d5177c8ec4cf36029a868880a5e3dfe6187650153ec74f4b974. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/QMBZ91323272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaba84bfb86ae2bccb009c060d77c8f00cb8940a9f98669f5b5bc05641a750eac. 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/PEMQ11406009.
Este Árbol Que Sembramos (with Vicente Feliú) - Remasterizado
Este Árbol Que Sembramos (Remasterizado)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac35795f899ad4dd54eb4e91a759d9b92f5c2dcf1e8fbab7e2206929c8aa9870. 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/ES5021602504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x686f84f71c1d0651570a08451994d39b55f0b9d0c8a22fe3095fa0aa7d62c527. 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/ES6100678057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dbe514c2eb0a309c6da903eee0b0b84125e1c3e145019d98f9950b320bd496d. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/GBMEZ1545072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ed04c593bf68a95777ab140711e9b3b1cd06719caff090e6bec43529b5ca2f7. 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/ES7630601709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed85cc25f724333e8b2bc95c019f98b0cbf32b9e12019068722a16454337cd6f. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QMDA61316569.