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 0xf9fda2c2b02324fa6fd6674c9b0ae04318a60f17d9eb6366f3179e22000a3b70. 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/19308ff4-798c-4f40-92aa-8d49572c6c4b.json and https://artists.proofprofile.net/proofs/artist/19308ff4-798c-4f40-92aa-8d49572c6c4b.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce25c6a605b669be26bb723533cf2de80d4baa45def4d3fa33b0e1e7cb73009c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USUM71616255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6c853d5abc15855dafc1a21963c09a6b88debc27c1590aad15d65ff9ca8a66. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUM71820175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x995becd5cabd66d4598b050370c603d234a864026c3bc3c69f8ba0ccc82ea955. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CYA221800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1add8400e6cfc7e13a82c4e2e25abe8f52278a134455155260ce7d9292cd7c3. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZVR22300346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6c853d5abc15855dafc1a21963c09a6b88debc27c1590aad15d65ff9ca8a66. 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/USUM71820175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce25c6a605b669be26bb723533cf2de80d4baa45def4d3fa33b0e1e7cb73009c. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/USUM71616255.
Momma Always Told Me (feat. Stanaj & Yung Bae) - Matoma Remix
Momma Always Told Me (feat. Stanaj & Yung Bae) [Matoma Remixes]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef4e8b9fba6d1beef194e970e6a5b9366ceafecd11da443da0c5c88cacb209e0. 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/USQX92100919.
Momma Always Told Me (feat. Stanaj & Yung Bae) - Matoma Funk Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x932371b6cb7976ca6c7e2adea44b03de489a226558eb10bde3170cfc7e83f807. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USQX92100920.
Momma Always Told Me (feat. Stanaj & Yung Bae)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x492f0f88190102fb18b1cafd06d5774d65f0c6c596410eb90cef20a728525070. 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/USQX92005527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca44abb552f944ad8b76f7dd10fb244112298dc2c4c51b7cb3d6f941deb80bc. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZVR22400186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b05b4a08430bed6ca5f526e00ac1e7d430a48767a6426ef8978b4faa5e2fbb5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZVR22300275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53561c71e42dfa924c70bed1ef7b5638eaf1292a0966c206b75ee9f66d0de2a4. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USUG12102027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52df54172d303676e0416aef3f43ecf5a1c7789569fc17036d0dad7345998fc8. 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/USUG12102033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb46f2b49cc4b14a10eefc84dbace9e369b3b98d123d5dcba69097f18b60f76. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USUG12003290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca44abb552f944ad8b76f7dd10fb244112298dc2c4c51b7cb3d6f941deb80bc. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZVR22400186.
Deep House Top 1000, Vol. 1 - Armada Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x995becd5cabd66d4598b050370c603d234a864026c3bc3c69f8ba0ccc82ea955. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CYA221800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc76450a0a82d109acd35c580ddd32a2456d10a30b5e15d418ffc7c1b6debd7. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/USUG12106666.
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