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 0xa53f0b9e1adb6559806d6a76faa3d91757a30423d2dac0702f0287b2f2fc1bad. Chain 2 (Bitcoin): anchored in block 953598 (2026-06-14T06:40:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0ce271fd-2a0d-418f-b4f0-26b7a8bb763a.json and https://artists.proofprofile.net/proofs/artist/0ce271fd-2a0d-418f-b4f0-26b7a8bb763a.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 0x8b9425f9ec9ca65f0583f70a115baa753bbc6fc22ce83736fde983f3292c59bc. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/SE6SA2179094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f70a673db70bbe50a987df312f6c49643acfe683c09ffe198b1286d03ff847. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/SE6SA2179096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68057156aa37fd5713128068a9af01b023fd3b3a548b09dc74ec5b07eb596f50. 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/SE6SA2179097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60d7b50eed42f7e91c96809be345e9b0b0d3a61c46f40a91ed4ed0d39e4baae7. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/SE6SA2179098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x968f75a9dd958bfd7be8f461b04e9a3c63afb6f082469b1ca3cfeafe4875fb1b. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/SE6SA2179101.
No te rindas Tu puedes (2022 Remastered Version)
Mira las aves como te alaban - 2022 Remastered Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40df004a3545b15e69244cb3d59978598c7abff19089e7691f31f3a1b8575b90. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/SE6I32253740.
Gracias por salvarme - 2022 Remastered Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a10826306c82a552392e65540867c4b969a2ccc9c6a687b4fbc7c4ab4b31c8. 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/SE6I32253741.
Mientras tenga voz quiero cantar - 2022 Remastered Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dde1b8ed3a9c334d06d8db3d93bf9914ddeb47877f0df7d4565aea5f3a10f4d. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/SE6I32253742.
Nunca desmayes en las pruebas - 2022 Remastered Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc462193bdc8ce3922f805a1b37b08a5ca440e64a793cf9b3003756d97030df3b. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/SE6I32253744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd431455ce558ed2e03c356233c588811ff80a697f9bb1322c5b094c3c1d41b6. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/SE6XW2232633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x790f04eca1fb0432d839ef3482b887162754cca4f0e1f07f8bd7fc9f9996920f. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/SE6XW2232637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf77e8ddb46209773a18666785b10d1ab79930ccf4859281bc72cd743d387cf88. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/SE6QE2357017.