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 0x8b0a2eacd364bede82fba4448c014cec91f266693fabc66471dc401fdb914594. Chain 2 (Bitcoin): anchored in block 954513 (2026-06-20T06:31:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9cee609e-6be3-4fc9-b975-1247fd4462f1.json and https://artists.proofprofile.net/proofs/artist/9cee609e-6be3-4fc9-b975-1247fd4462f1.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 0xd3f82749182b1a3072fa78f0096835e425dc99f80b2862eead808a37464b47ee. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/QZWV32387073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42933e233f651319dd15178b86f986f266e0198a0a60cb606412405134cf632b. 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/QZWV32387074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75bacb5f9b875d713521adb0f7bd3a8ee94be7672d36be2d5dd3f290b6e56dc7. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/QZWV32387082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda2067e4fd7092ec5d2c2f274d99c509588146e09cdfc1387927fdb2e882d116. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZWV32387096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232a8c70dcae38c7eb91940c662e33dcf2f6d46dad040e263d77b344e4636bc5. 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/QZGLM2552601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2550f8cc00949f040a46cce09df934ea7f857b71af3caf7565abfa4f1c311430. 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/QZWDD2374779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ee4c69293576a5648205aabfda4a4b27364c7ec1f45c6d8549ef7914727074. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/QZTRX2374387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf3a0211b1da55950043d0e45b61d4f66747f15614faa6bec0f9593b26d236e6. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/QZWV32499338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08531146e2168b52388b567ad0a4cda515351a26ebf8670a044e1e99b8d99c73. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZWV32499341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2104df917f94fed559d827b76cab60074ae39394d1d5541eda2f86555c48bd8. 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/QZWV32499353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3107d832cce0866da2dc95ec821c9f81fd6fc02a6489318a54de5f20627b73c. 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/QZWDD2421524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a05c0bafa475263cfbcfe3f16082bd6c466755cb944b0af88ee0a5794e7b065. 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/QZWDD2422122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x146d1099076037273175c182d6322e681d024afd53faa9c4a2e37c434a6e79f8. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/QZWDD2422124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb6d8e7cdef52a58522f27edb59fee882ec838d79f515ef66a742b58d04f80a1. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/ZBI3J2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x542a2935fa8f82295b1becefc12eeb0eceb7e5d0aec576adf60640afe5b21268. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/QZW9L2359407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb58653407cca2c34877910d10b98534826b825e69e88e093b13c93b99ca957de. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/QZW9L2359408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x213f882ce325e035f00ab6001a5fbcc3f68407f45a712511526d313642efdba1. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZW9L2359410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b6f55d60c57862cc69a98b5d20db1be9cc577369218139becf07b478535c5bc. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/QZWDE2328309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9872f89620034c3731a5fb05e35d64eb756b4cd2ab1fc0ef96feb1ad42a698cb. 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/ZA7YK2400006.
Soft Life (feat. Dj Carter BW, Sbuxo, Pharoah & Serenita)