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 0x2b38851760e509989a6b97d397c58bc3db0cd7d3c79267f6cc6e552fc44ecdc7. 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/e5642f70-779a-4c3e-af62-77a4eccc1532.json and https://artists.proofprofile.net/proofs/artist/e5642f70-779a-4c3e-af62-77a4eccc1532.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 0xf6dbc6426164cfe4e0e9d7375d63334f34785d48ddbda19964dc98d9d26915be. 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/NLQ8D2201411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe93173d5f340b3c334cc0f2e06ac062619fee8d95020db2c8614553106a82615. 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/GX38U2483581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc590b6c076f9600d2538d8401e35186d103b53b43574256fbd5e814d11680de. 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/QZK6P2519449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd838a9057da518bb093f3b33c679710ad9f9d62c07a4a8a9d41dd9977a111202. 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/NLQ8D2500094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x113d641d79590eecc61d1f1730fc0303266f122a7cfee9a54744858c7f89ba1d. 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/QZ5FN2511564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67810b3a853673ce3970077c61267def7182184f21fdc908849756761a6f77c0. 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/QZ5FN2511587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57734e477f1f83a00d7654c9c7acbabadaf930834243bf51d85bc6d296e119b4. 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/US38Y2429693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc00655e272329de60ca02db045e00e12d167fbabe2477d4ead800e5e1bad1ca9. 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/QZWFW2413628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81842a32a2894968632951b56bf9b80429272cb18b3c400e242cabc6dbe28b3c. 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/QZWFW2416417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631dbe342db963cc537bd9f04bd816800a3b4eac181e3826145d46a9fb1a5cc0. 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/NLQ8D2400372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631dbe342db963cc537bd9f04bd816800a3b4eac181e3826145d46a9fb1a5cc0. 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/NLQ8D2400372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e1f5578c78e2061edb0312ba5541c5eddf30f4a2860d8c016ac8b7be610797b. 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/NLQ8D2400116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee01433d88b6c830f42e78fe671024f767c59ca2ab86caabf986d1f5d73ddf5. 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/NLQ8D2300700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x877b0de43d2944037e6fc91d4f7f21eaccd03d14c41604a89f47a2125b3fe481. 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/NLQ8D2300561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69b4a07f4631e5de5f61e9ff3e88dd184d7b5871feb15dff41cfdc442679f08c. 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/CA5KR2321727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x878a9aa0a010fe986de8df47894601ab546947e5d6c29ec04336275eacba2826. 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/USA2P2236064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x632b8dbbe13de159a596faedc7f3afb36c1f38a0f73c8c79f23f85420e605908. 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/CA5KR2216846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d350f44cd0994b91ca83844932472bcb7df23ac0f72443dca45f2cc0346a6e9. 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/CA5KR0042844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa89617129afbda9bb1458cb4eebd395acb573f76277cac9ff4d177df643ba414. 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/GBKQU2159902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34fe54b6f0b76f2b22b15f37abbade70c8c587488f4d34242975e46e10206fc5. 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/CAQOI2504135.
The Way, The Truth, The Life (Seven Glow Mashup)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfedd8516bb02db395e7955a3ee5697e4e9d58528bddeeffac8a1f1fa887cbf24. 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/GBKQU2585770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c8bc326c6bd2cea3e95c0365c66b805fde3b6554502919af420c696d49e059b. 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/QZTLA2532348.