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 0x37750e9ddc0aea46ec169d7555cbbd531d3207f84a0ffce2b28a3e4916139185. 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/771df5a6-680b-4d7e-8a44-3dbb2ec098b9.json and https://artists.proofprofile.net/proofs/artist/771df5a6-680b-4d7e-8a44-3dbb2ec098b9.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 0xdf147636db48b0cdf2afe08b3615726f26bd505d2917bfb49c09ab068e94d583. 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/US5ED2303057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89c38e48141efc81fae5d474b7adab7d742d7bbe95d5fadc66e210be020fe0be. 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/US5ED2406616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b3d90f29313bdcdd723192137c8f32fe0a3ee1c3319e2dc00ed29f4db01089d. 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/US5ED2304211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3acdbdd5ca739873d1f41f29ab6bea46f29d0a7301350f38c86e05c00bb05124. 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/US5ED2305018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a551f69285669cdfd5f3e35a6f35c4dbb27fc6c7dd98bb64d157f6494dac37e. 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/US5ED2305019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b3d90f29313bdcdd723192137c8f32fe0a3ee1c3319e2dc00ed29f4db01089d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/US5ED2304211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c5cd0a83a068487519244739eb2fd50d81239233c3c4d23c7bd86cb2f8ce955. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/US5ED2303496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ca4e8737bb53099747148fca3110c87d259855c1380b65ceaee635feba6ec5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US5ED2304210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe78216b96b57658fcc5426ddec36b6c0b3532e1124c9e5a10460f042b1501e44. 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/US5ED2304212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ca4e8737bb53099747148fca3110c87d259855c1380b65ceaee635feba6ec5. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/US5ED2304210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c5cd0a83a068487519244739eb2fd50d81239233c3c4d23c7bd86cb2f8ce955. 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/US5ED2303496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x216136620296da0f3ade3327c2cc65a8a7291d47edb44cbff9247dbc0c2851aa. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USUYG1430705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x146c8b1bcf442abaff1b6adc0524954c10fbf16bef9d4fd70d575e9b6720b58d. 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/US5ED2202497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb8bc9ee63f93db8f8f99527f79dd3764be6c516b0796926e578109cf6dae4d4. 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/USA2P2408874.
Is It You (feat. Ivory Scott, Cristina Mackey & King Sis)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1639533b7e2f5581eb8d702bf571462c72c0bda54a396c9f8caf96a40228e9a2. 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/USUYG1501540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ca514578f34d240c57565d73af1ff2f2bb62967b7c42ae44e520ed5d1056b8. 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/USUYG1501545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1639533b7e2f5581eb8d702bf571462c72c0bda54a396c9f8caf96a40228e9a2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USUYG1501540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ca514578f34d240c57565d73af1ff2f2bb62967b7c42ae44e520ed5d1056b8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USUYG1501545.