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 0x3cd2acc4b9af1f0e00750fde53dfac4d5e1ac7a6380a71520926c44871288dc2. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/99a4d61b-5854-4be1-a828-cc6dcd64054b.json and https://artists.proofprofile.net/proofs/artist/99a4d61b-5854-4be1-a828-cc6dcd64054b.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 0x8b51319f9f63cb22ebbac7dba60967e72c0f853c3557c2f27fd9e0f297166d0e. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:37:28Z), 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/USGV61010311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x275637afe23088dc335544cf08d587365b8a410cb4d1fb47ba4acc82495ec54f. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:24:02Z), 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/USGV61010527.
Trill Entertainment Presents: Trill Fam - Respect Is A Must
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71fb36e7e994d3fc35f159a7627325b77b337acbc115a5b647e8a7e029112249. 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/USAT21601511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cf5a40c397a910473d0fbcf2a323df26be3870d649ef64dffaded63f676b232. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-21T08:35:25Z), 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/USAT21601514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f98efa4f63a73097c2089bc3369cb380764cdb7b3fd582ca7a9148f1f073ba2. 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/USAT21601519.
Y'all Ain't Us (feat. Foxx, Shell, Lil Trill, Wankaego & Webbie)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf095136868e5b93fc15baae4d851178932926f04a8c5d8f7e333e00d0b1a5b8a. 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/USAT21601520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19a2ef9c5977d12fe0213a80af81722e3d71f6335d4f8495988e7a04bf7cf08. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/USEA21000139.
Better Not Fight (feat. Foxx, Webbie & Lil Trill)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f590a75f951c2cad7da0b18a0265fb1e971003de39f72223f6ca176839b55c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USEA21000142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30e74b45b7ea54cd16ecba01b6f374e8c931f9dfd7029c34e37b8f57d19c32ed. 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/USEA21000147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19a2ef9c5977d12fe0213a80af81722e3d71f6335d4f8495988e7a04bf7cf08. 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/USEA21000139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f590a75f951c2cad7da0b18a0265fb1e971003de39f72223f6ca176839b55c. 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/USEA21000142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30e74b45b7ea54cd16ecba01b6f374e8c931f9dfd7029c34e37b8f57d19c32ed. 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/USEA21000147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2500c6c8f870877b71518fe620b4f098df5381e398efe88154690628be9ea81. 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/USUYG1057245.
Turn The Beat Up (feat. Foxx, Lil Trill, Lil Phat & Webbie)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc0c19e52a1176a7a37e5921eaedf4d003fb02a74cd70afac4fdd277ffd1506f. 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/USEA21000165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf377a7d0c6623eb8ddeb1c7aa1057d14604ee37ae98be8e448fa13d7c9c839. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USAT21600589.
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