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 0x6f84ca2956db6111a6b19668160e2978c488e0c598593d361105cd449161d7a1. 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/a2934ea3-2b0b-4181-a4fb-8089eba2573c.json and https://artists.proofprofile.net/proofs/artist/a2934ea3-2b0b-4181-a4fb-8089eba2573c.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 0xf2ad306a7383126eba901f96627b2629f7bc9bfc2aa2e4fc40bba141f92eb52d. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T16:46:31Z), 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/TCJPJ1987626.
With U (feat. sheidA, Lil Cotetsu & SUICIDE RYUSEI)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab2d8d5db0c8c05906ce98130435a568125c9ca08e9baf66a557e6ac8abb1ac5. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/TCJPT2205318.
addiction (feat. Awasetsu Mona & TAHITI)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da427001f56ca248ac2ae02d0bd43f559f06336de3078e6f8d90f00713021d8. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCJPT2279397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59082aa465c9a8d1e24ed480bd2acd32b0f134da7632f9fb4ab2e68d95d4114f. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/TCJPT2286960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81060269ccf909fdf30017ed1f2828a14fdd7706324d5a55c55ad42c3da62375. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCJPV2347363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08deb0acf5a5003ac6d30684914afb555392ff8037b27e56e6341336d3aef93. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/TCJPX2314308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976d1cdf9cfe0662a8a61a8fb4cc195b17078290fde46e6618133032588e136d. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/TCJPX2314309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce716dea539edd07a4285a7a0d98d8e87544eb0f466729007b743294e968264. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCJPC2457757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953e6a62a3931dfef995fba6c016c5138170d6784577fcd8a23a239c87a75426. 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/FR9W12033191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae7b65c972c6ba415de9a02fc5ddbd4e4523b2d8a996bc198806c553186439b2. 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/JPY202000022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c3d1288892022b0bdfb7349e6ee9724badd232aca348c247e8f9407d0e0555a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR9W12114618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3e58f70f4269580d9ec424a133638a7feed534c88319db5a603f508da6ca778. 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/FR9W12100280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15333d2f10b35eef3dceee74dbb21534f5937e6f643d60e2a0bab6fd5b1f0b1c. 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/JPY202000115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdab34e836c609e5247c1ba584dc7326189f8b85e3c460c4f9353e56146b7960e. 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/TCJPM2044219.