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 0x43f429068f9dda9c463d435b88b17984a59e1699c15cc543e287055c21e8547f. 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/f4d0c661-f8a0-4c3f-a3f0-cd6917341d52.json and https://artists.proofprofile.net/proofs/artist/f4d0c661-f8a0-4c3f-a3f0-cd6917341d52.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 0xd7b660da530647cf1d0de0c8c04b4ad07f8182679c7d5038a49bce9b882261c9. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/PENMS2402292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7b660da530647cf1d0de0c8c04b4ad07f8182679c7d5038a49bce9b882261c9. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/PENMS2402292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e7fe673004693468b4dd8b316e2df8c88f2a8ee6685f0dee4d506843319d214. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/PENMS2402240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e7fe673004693468b4dd8b316e2df8c88f2a8ee6685f0dee4d506843319d214. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/PENMS2402240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x691406be99e57ae27d4ec11df89a6aa7b7bafa2778f3eed73285fde2835f8a03. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/PENMS2402199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x691406be99e57ae27d4ec11df89a6aa7b7bafa2778f3eed73285fde2835f8a03. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/PENMS2402199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcefbe96a817394a529809314df9ac5375e78500cc0fe1924cfcee12d508e1862. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/PENMS2402234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc571df317431ce8ee6ba907a81af91727a10d1c629ecf824dc552459a49cd422. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/PENMS2402283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ee55e667899660f87e19e9761785d4a5f5be51720d8b269c4c48dbe903b546. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/PENMS2402232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcefbe96a817394a529809314df9ac5375e78500cc0fe1924cfcee12d508e1862. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/PENMS2402234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc571df317431ce8ee6ba907a81af91727a10d1c629ecf824dc552459a49cd422. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/PENMS2402283.
Mix Dejar De Amarte, Sentada En Un Bar - EN VIVO
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9889137df5f19773e058788c406c044067ca5e12bd1485a656005f77b54d39f. 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/PENMS2402334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc752dc7610ca85cdd553abe3e2c3437124c190a50bb295ce2aa3ae909fa264fa. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/PENMS2402359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6016a2c870e597f11f1d2a95c5af74f622fbd8a5e02df94f8458dd2656f70eba. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/PENMS2501562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbcf1a29679ae49e3e533f33fe2fcfa96335f992a17ffb8daa40f3a89de11333. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZWDD2555721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6014735b1e0af11bf874614f47ac93dfa51846564317f66862e7a34cf9517dc. 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/QZWDD2599947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2de8f7453635ac0527e0d8e9eabefb75c22dff98701168a7d1d931d101101efc. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T04:30:07Z), 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/QZWDE2575906.