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 0x7b8b4e414db3612f2d91a754db5871f1e39143d4971faa305f8f01391d0611f2. 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/94635bff-47fb-4066-8bcc-ff4ec834a3f1.json and https://artists.proofprofile.net/proofs/artist/94635bff-47fb-4066-8bcc-ff4ec834a3f1.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 0x5b037b9ccc57556f573b0c1f52d552f8628bb9d287dee375ee8102da743a7717. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USHM22280884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a0c5e435c7b7822f5482949ae65391803c10769a866e0403869286d019d8aa. 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/QMSAV1100863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf806358c69447dea9a6646ac102ed77d94b82097efe3dbfcb23f25bcab0b5d1c. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QMSAV1100867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60764cccdc36e56ffd57a34154d813226b8fe4258f349eb14ba66d4907793ee9. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/QMSAV1101352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc47dc44c03c2f2e7052ce8d339993ed5993d82f94ddb91219bbbaf1e9c94cacf. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/QMSAV1101353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x416fc1f13ddc880755ab779bb789909be743c8580e54a5047709e413b335f9ed. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QMSAV1101789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8ed062bc630fcff3543795533df27e1de06cbec8bb08e6b09f5a7d152ad774c. 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/USDY42275243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc43641d743f8310fe3751086c20a4db9ebae50a38fcd30bc65424eac8d9f585c. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USDY42275175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb62d8465e650fd21828d9a9c3e4c09c41411687a539d80c8dea5c7f55580c626. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/USL4Q2202602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed4936baa61e7b6d30ddcf212e0e170f04383f82b8a1dd6590c339a4bcd58855. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USHM82451291.
Popurri Sabrosón / La Empaliza / El Regalito / El Relojito
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e26a615717cf0192baed04974a18e3b8e14f20cadedef38cb4365c50f62d8c2. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:31:36Z), 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/USL4Q2536061.