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 0xa51a753703176567178b8476e0dc1cd66a82cd7932a9cc71d15df99c7c08e53a. 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/3b4db355-aa1e-4703-959d-877ca92765ad.json and https://artists.proofprofile.net/proofs/artist/3b4db355-aa1e-4703-959d-877ca92765ad.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 0x2d4fef5ac41388df5940b6e10aa6181a9a42919b14662d15f635fc3198499f0a. 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/USDY41925867.
Si Jesús Está a Mi Lado (En Vivo) (feat. Alejandro Ceberio)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec4f7b7f3a1ccc38619cb83f9f091037bcaa469b18968bdeb17957afa5d18eac. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/AR5KS1900002.
Cerquita de Ti (En Vivo) (feat. El Turco Oliva)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00704678d63eacf5f8be1885dcfe283447e93b39c525e766e6f14daf71e43d50. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/AR5KS1900007.
Dale la Mano al Papi (En Vivo) (feat. Rubinho Da Silva)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d2cab8e7418d3142e97e7197e9f0b58534846066b29f13d566a75716495cb9. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/AR5KS1900008.
Mi Vitamina (En Vivo) (feat. Magui Olave)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x793298ef66ebb510ba508dc190909553f782ae8ed1e11ab0f705f9bfb1e2827b. 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/AR5KS1900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe582b5147e081cb80cdf3507685da94c162df32cda5dc9663e12826185e5b99a. 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/AR5KS1900014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb726986af60c666cdd83f0311a31ccd76d09d2caf5f8139d2d56a87f1216798f. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/AR5KS1900016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ded7f1f0b9986bb5ae018a6032a37b9251823347ae87372e9383ade360c21a6. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/ARAAS2100121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1770c79e9795021f045991a0a5848c657f13df633f676f8ecb972fcf283276f5. 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/ARAAS2100122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe2e42df79219a375d4ccbb33065e67ac16b131bdc792b62f4aca2f41248ba5. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ARAAS2300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee4628ecda6859914f402f4af88724c62c330d30c5e5cc0fb58d16f39f11ab8f. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/ARAAS2300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e708557d70b24e090657c0d62a39da01b3bbb8bc8a2b4c42bdc06756a400b4. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/AR7PP2500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5507baa8318a00112eb31e021dfea36e1ceb51f2ce3d26b7fc8dba5e90f31be3. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/AR7PP2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x196246835d33bc94577cb13cc2b3e13f61835e26c41c334bbc4f8074711ebf23. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/AR7PP2500001.