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 0xb599f203494da4dc74420c8fdac7df7b952cace721a9821d8376b8d10da01e84. Chain 2 (Bitcoin): anchored in block 953670 (2026-06-14T18:07:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/593be172-9314-49df-be64-c6ea6477babf.json and https://artists.proofprofile.net/proofs/artist/593be172-9314-49df-be64-c6ea6477babf.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 0xd6e28e08536347b8cd873515027bbce48d9ce5d14a7a20a2e44af11f09270282. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/MX2832310937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e0502aec8ee6d75ba6d39ad8215bc6076633284427387114c6043a73666e1ba. 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/MX2832310939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x357b2cc175b5147e15b2eb1eee802a38c3b2583a90e7f0f726ddc07cafc98d20. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/MX2832310941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce30eaa9b0740d14fce4156e23086b0bd0ff4e4fc5a46b0a8d13f700955dea6d. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/MX2832310943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4889fb0ef168bc8e9d7d482756cccc5df635362e5593792565cd80540e222012. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/MX2832310945.
Déjame Hablarte de Cristo (Remasterizado)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a36be239b92a24092147312649fb35e4564389d4259e33d8a11a14f0962668. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/MX2832524350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda82ce9c941e167811af19f028cd2db2f7c9a90dd3f5545da5a0fb96aa204bbe. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/MX2832524351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c0cd6072d6888d6ffc25a3e0fa38c62db3f3114f399723c843f4c74ee0bd41. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/MX2832524352.
Déjame Hablarte de Cristo - Remasterizado
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8888927f53247d150b65ca9dfed4dad780b5c6c8d1faa059552bbe3ec65a45f. 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/MX2832524359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d5b1e8f65f26985555b650bdc1ca0508677e6829c19e776303169da13ab19df. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/MX2832524353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ac00b364bd00cc0126796a1825b4c74fd8aecc05387d34b9865e73a23bcf513. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/MX2832524358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd75adef61b7ebd8de82469256f407f912f5bb1c19cd20c5501842b7096d02378. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/MX2832524354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a9c1506c824564fe01b9be47b37b6decf32e8751a97e2fc7b47e39a49f56f7f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/MX2832524355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb71c3546515047573fa3b84d9df92a0a29240ccdf3f5a39554464df5331cdfb. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/GX4R52497617.
Aquel Que la Buena Obra Empezó / He Who Began a Good Work in You