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 0xb1ebb0cfc26b8208e0f079f0b953f7d51bedfbf6febf2ec3092ea351bce7921a. 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/484c74fc-2182-4cfe-8371-498583e6f843.json and https://artists.proofprofile.net/proofs/artist/484c74fc-2182-4cfe-8371-498583e6f843.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 0xb5d4ee5315af2388026183c20a6d93edbb8a2049c2826a6e4e3b4f42586bf8a3. 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/QMBZ92069621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc14957e7cee23308b4cc34d618846a595eef3657c1b82986341a5af608967bda. 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/SE6I31936048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc07a26e0cb3a30b3b349130fdfd0a340159cb966092e7b34fca9dca8c0e00563. 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/SE5BU2131482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf45898e69c5d6d43ebc0c8a461e98b24e25bc0a690b6b64891ad3228f0e44fcf. 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/SEBGA2100191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a0c96b9cdd7ca8d9bc7d4d11239c3288636ecfb5e3086ff4cadd7e84c692f9d. 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/SE5BU2477452.
ANC (Ain’t No Cap) [feat. DnoteOnDaBeat]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ede7cc7e7a934ad97979373cf4712d8a6e69fe2615e6d102fe34caea05e3a6. 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/SEPQA2200309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84df840a089d298155d961c3576a9910e78160b4b8866585cfe7612f57fd5e90. 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/SEBGA2100089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4194a7b4a98b84547e6db74d7452889a02f93d3a2aee0ccaf5b102cad939d4ec. 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/UKXN22096348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c107607285fac09242033b600b595dbf3474fecbcb65c7d10fc5989f0db2bc. 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/SE5751982252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ecc72114b5ad8ebda410613aa0d0d76b77a3c0cb9617e38ce61ed4c84c7964. 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/NL1AP1951517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27ba19af451132bb6b124db3138fc17c9cc0074f5c7409828d08ae43b757fa62. 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/SE6I31933223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f570578d29bf268e5a414ee3d3b2ef1fe4a5f3fc34988e00c8fae44b951892b. 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/SE6A92010961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd830883f3b6c612897e3b3729e19479026036be70e566df559308d02b9cf5f57. 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/SE6A92010962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc905540092f371a4a9333caa0d2196bef81a513b05afd982a43ebee8c94953e9. 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/SE5752023077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95b0f2bc084bc424857f4bbe8465995b002bf10b00d102c61de6ca3f9cbb57e5. 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/SE5BU2018496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5216555a4f766d04f0cd7e7ef42e1551c553cd6cd04dd9e17eb26061e4ecaf7. 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/SE6A92010963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa68849f683c5ab9c08b193062bbcb58766c8ed4d59704f1381a93f812516b29e. 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/SE6A92010964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e654c6c1fa4b47084d9ed7d0847d333b48a0a3b3788415dcc207fdefd8d7ebb. 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/SE6I32099993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ecc72114b5ad8ebda410613aa0d0d76b77a3c0cb9617e38ce61ed4c84c7964. 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/NL1AP1951517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5639c84e0c541a088ea04e5d03725fb7274e513a5faf7ada01fb3074b1613723. 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/GBMA22055953.