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 0xed448600a4eed03513fb29b6e811f71636df6704fdc43f8f90840bb1e1c6c45f. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/41c9ca56-8df9-47a9-b3e9-3d9519902f38.json and https://artists.proofprofile.net/proofs/artist/41c9ca56-8df9-47a9-b3e9-3d9519902f38.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Popurrí: Me Va Mejor Con el Alcohol / Sobrio
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 0x7b58992d15375708a2c1d4dc79cd8119975dac96d15584b8b053ec285b20fe04. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/USHM22470917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc777de6e355f13712dae876e88fbe160546a5ac867cc29422b1bf0ba61cf98. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T03:30:51Z), 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/USHM22470918.
Popurrí: Niña Hermosa / Recibi Tu Carta / Vuelve Vida Mia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88552fb9eac51794a301042ee9b1952be97075e26ab216dc00a934f27a5b89b6. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/USHM22470919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc971a8da22d1f177ad6bf671b404bf8c1a4cbf0c1c9c072e907464730daf9b. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/USHM22470920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ee559a4b18ca63a8865e6d0d6c661df50382ad27929e508c29310c3092df37. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T10:30:41Z), 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/USHM22470922.
Popurrí: Recuerdos de Amor / Para Que Lastimarme
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf6382bbc83c2213b7c65651d58598d096117430390690c5d8a4ff99dc16aba. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:32:56Z), 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/USHM22470923.
Popurrí: Suena Tu Telefono / Ultimamente
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a7a4265676d0cdc7b22d477805a4bcdc0006585e70fc1b88a2fb5284ed9673d. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:56:20Z), 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/USHM22470924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca95b8d04ec943d5caa37a68cdbfa88801c45b1c656beb218b8407fecab99615. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USHM22470925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a5363a0e6aa472238b7206df8eb60227cb806e11027d28a72f7dc1ef9d55830. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:51:57Z), 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/USHM22470926.