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 0xede6561f604c839dc936a5c07788b3164ba2f50fea6689ceaabc2032f946024e. Chain 2 (Bitcoin): anchored in block 953660 (2026-06-14T17:20:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5339ec71-a7d5-42bc-b4a4-2f1892a3e75f.json and https://artists.proofprofile.net/proofs/artist/5339ec71-a7d5-42bc-b4a4-2f1892a3e75f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Coño Men 2 (Remix) [feat. Lapiz Conciente]
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 0x18a1480040faf8ad18ee4a41e9cc4e9d3de7143361ffe02dad128a26df011bc7. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZMR82200690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x801f86b2bb63017d7295ece8543ee53aa7cc860c8275a196882421ba47989646. 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/QZMR82501332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7afbac8db3409f46fe64358eeec78b572e6634bc34d7d2cb58f147fe44583a37. 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/QMBZ91708712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdca9fbbed07f5c829d79913ef22d560b591019dc8701b8ee06d0c30f4429675. 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/US6R21457251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc38df45e96794ad3e9a1006d5421e294952a3e032e5b9a62254999562bbee249. 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/USJ3V0798075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf009efbc0770c332d5aa39e18a19be44bfa658368f3efb32c41c8f5463548ae0. 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/QMHUY1650649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x197b7305b2067d405ee876e924d8c35462bb315ecbb0b531bfa35267adff9f07. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/USLZJ1983284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x138f5f4fd18324aed559d0ef6afe4827b4f434dc9064f05373ebdfd04f80e089. 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/BK4DA2321996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3114e154cc2d44382b5e18158605c558f607a4bcb85b8ab1ea13cf1e3838c93. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZMR82200490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae75f698f37cc07fc850ab2563904f913d07807b50795d2527ee9cfdec697ea4. 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/QZMR82200438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80d8a071626422afaa99166d940643484046180e7882fc04fca4185ee31946a2. 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/ITWTB2401390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee691d5319d7d130ad0f37816004a17ae49d51098998d1498c61ccc683ff6934. 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/QMJMT2003073.