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 0x8f27eb8bde574f11028ac721a4679f062f03561b5dc46d88e77ededf85b3eae5. 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/a487640f-db83-4af7-94b9-6a6f5164e281.json and https://artists.proofprofile.net/proofs/artist/a487640f-db83-4af7-94b9-6a6f5164e281.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 0x63b0f13f1e5a3d2dcb3721317ef7b9ec5f3123bb5f7cca63c3e9bbf16cb1d7b1. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/US5ED2303059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9cf6dd93d418c9a22167591abd98134eba3548e7d69c2bd3c66ace2698ac901. 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/US5ED1900186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53a79d27f4b55f3838bb9e57d1660d8e9e670533f43c89be77fc2fe7568c8908. 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/US5ED2201902.
Don't Delete The Kisses (Jelani Blackman Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe388fab9dd8b059d4b345d318e379788f7cfde025fa2ba5d21e978bda9769c8a. 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/GBK3W1800718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f2390c73199f1d7ed8cd7a293868cbcefc79dc759a17ac8a77464ebcce233a. 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/GB7QY1500567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb4ffb522ffed80740e843419060cd9acde2489ad3cb2dd54983f2c45c28e72. 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/GBUM72304806.
Broke My Heart (feat. Mallrat & Jelani Blackman)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcefd107e7cd25417eb6e5a53144e7e21d199403f31df5d9234c2bd329c5a5c7. 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/QZUCN2200922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10a2f2e98493430a70c8a94290f15602ab486eee3d701de6d9a9e312d53eaacf. 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/CAN112301084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10a2f2e98493430a70c8a94290f15602ab486eee3d701de6d9a9e312d53eaacf. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/CAN112301084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10a2f2e98493430a70c8a94290f15602ab486eee3d701de6d9a9e312d53eaacf. 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/CAN112301084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55b7c9f9190937ffb48d4a161aaf4165c161b51bf12a7a404fc19d7b18845dfc. 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/US5ED2303947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b2f96bc37aa9acf54e00d706819c515225ab614584be338ddde9b7a64619370. 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/ZA0W02300129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b80a6f5d4456a7b91a834b228548b7e5cf6e9baa12c12bb96b82fe3f28cc15. 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/GBPVV2300676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd838ab0f5a34db216d95cf5c3c15f6318c013ae363ac8f3cd168020ccc6d7c77. 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/GXF9Q2413611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc61536aa39d0eb2463882f8443f4a1801b079980b9572205b8f0b2d147f9e70. 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/GBMA22392378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x007ca1bdad8abe24bb051a788c40f835ae2862c20b76541d6aa5119e96e5c173. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/GBKPL1821941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88572362d6768d373a643d63cc2e4cd2e7e0895dfd94b9ca6b21dd0019cbddb1. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/GBKPL1821942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x638ac44ede149e69b0b4e5804dbc2502ac1b3e8ad0265af25e3bd31f234f3d37. 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/US5ED2201667.