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 0xadb381db5173509e8600664b79d5b862e528a64fc7ba7e4b4dffa8af388dd7f7. 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/1fba8bb8-fad9-4317-bcf3-ef29bdbbefd9.json and https://artists.proofprofile.net/proofs/artist/1fba8bb8-fad9-4317-bcf3-ef29bdbbefd9.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 0x58be4dee3bd226ccd0d214e8bee166b637a914ebb92174f3da38158a5923a675. 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/USRC11701744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x557f4cd0685d7760c5eb462cd2f1f637a08acb33fb2f1b4649f9e94cf0ea3fce. 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/USRC11701746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x369771596f596af469bb4859f93fdec347b1872d9ec93a5d6658be4a947e455c. 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/USRC11701390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6322ae5cc1dd7d1e6274befbcb384338df898a8ad22d81c7e93f6d09f1a25e78. 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/USRC11701706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b5059d30057934f3574b91083e112a56d27636f16f6911278293f3050f18ba0. 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/USRC11701748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa59e13e7c8a25dcd09a76c4d8f008e75af8aabe40c56c60b83800a44d227c436. 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/USRC11701750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55ed8b64a11f96ca9cc9d7377e536bd32812d14432a8e854dceef6e4d74accd9. 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/USRC11701386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27cd3fed361bbea20353bcbceda6a0e90e7ebe43a0bffd41fd54702c3c082ad1. 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/USRC11701509.
Ea$TSideGho$T (feat. MD$, A$AP Ant & A$AP Nast)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45d921b350192299a717769e7576669e69458ffab3c0a5d3213f1cece84718a7. 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/USRC11701753.
A Glorious Death (feat. Flatbush ZOMBiES)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dea4513bf25751f9d9a450d6e668f9e82e0eb8e427e18600a8bf2778523a656. 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/USRC11701755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70ae4b090240c5270ec8e15a05d4aefb1b9343b3e523dcf8dea907b44b139f2e. 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/USRC11701757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33aedf28b0c66bda8d7e43ae5e60677d1a1d51ced666f6cf394a0a593e6282b5. 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/USRC11701759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x794ac4b981d9472f96fb0a2f5456b8a57b83b2798445139118bd97681d93f2f8. 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/USRC11701708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d4ecc3772962fe82d8790c04c1fc2ac5b554ea8306a4bb7c67dd8d76c985fd4. 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/USRC11701761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecb1e09d1dd2b57ba9a6dd4bb84240992cc7894e318a129c2edced55d94ad783. 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/USRC12103092.
Crazy Brazy (feat. A$AP Rocky, A$AP Twelvyy & Key!)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b4a54784340630a1cdad95623434681ef0440a9a2b9726f27a2c32295cd668. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USRC11602362.
Young N***a Living (feat. A$AP Ferg, A$AP Ant & A$AP Twelvyy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa61f1285d43743f42a8e7490aec0ab076b192647d944e4d847a237e29d166da4. 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/USRC11602546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b674048051437cba300f97bbe322d74817d12a4afafe8e7d043bb83be826d2. 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/USRC11400284.
Hella Hoes (feat. A$AP Rocky, A$AP Ferg, A$AP Nast & A$AP Twelvyy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc372f34921357b5013084b0ec215872a2f7dc486d8fe1e7b4462fe4093384009. 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/USRC11401052.
Feels So Good (feat. A$AP Rocky, A$AP Ferg, A$AP Nast & A$AP Twelvyy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a12e23efc636d3b955ebc5c549435d2f32ae923d4e4c56fde19858abf51bbee. 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/USRC11702027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89b42a4f0ff0fe0bce0d588fd0b7e2dec57a3d5295ea2f24298bebe900203623. 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/CA5KR2231833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd68a14169c56c464f787696e9f397735c36c31543bc4720ef18f8a6425cd5bec. 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/BCEEG2100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f041054614b25adacef281e08dbdb5164db401a56e00bd4c6fe4cab29018da. 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/QZFYY2022931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff38ecec3e841006f1b3606d58735a32b0c5dc18eb26540679bb243216d90353. 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/QZNWX2043351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d66c24d33e8768024a2176048d18740db5db03db36de6dc0b31eeb1b645af49. 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/QZNWX2043355.
You Take the Credit, We'll Take the Check
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb94b14ee9364993ea3647d2b50385d355218f1f19efb1910b7a6f410a28c9e1. 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/QM6N22249688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f9e4045d6155335ae51bd8e96b7136cd2e6e20767d8fdcfdd9e891715a00da. 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/QZK6P2199246.