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 0x28b7820159799ed6071dd7c2fe471e30a84feff49314cbdc87bc4c16758df99b. 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/edd336fd-9cc7-4440-9ccc-8230781efdf6.json and https://artists.proofprofile.net/proofs/artist/edd336fd-9cc7-4440-9ccc-8230781efdf6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
What Are You Waiting For (Spark & Shade Remix)
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 0xb155c236e80f3fc266b23e74477cac413e4754ad24ac710b70f6daeec9bbe5fd. 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/NLE802200268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x086c80c47c4b03cb07b919b29e210f19738a791b4afa6f34ae8fe1d4bd98dd2b. 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/NLQ8D2200370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18043d1c5fa15e06e196fb744ae37aa4fe5d09d1982e1bc510110fd95c368b90. 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/GBKQU2144439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2419226ec4150629bdf4f677030e13b9a0a587157662a13928665474420778b. 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/GBKQU2144440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf02e91d89832c6f9bf5f9e228a2993934d9660d399c45900d159d00d33ded43. 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/NLQ8D2201419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78b03857f4fe903409df18a3579c69c040d18361f901c66bcdd1938b4b0866b8. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/NLQ8D2201420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b7200995e1b76717a850c26b1602e5a657480e25ec557ccaf89377f093a2928. 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/NLT2H2100167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b06e84ffaa5d5c6a08e182c10f9d2c05b0ca5369e4c25c5b57fd4c5b5b0b3e. 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/QM6MZ2290017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa094672604bb079d6b4e5e7c28e0b194dd79b88ac1982eefb2468dcbff703a8f. 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/NLH2L2200509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb712c7103b2c852443668ad9506570e3abffb5ae5f119ee2ba3c313da26a555e. 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/NLH2L2200355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c3f554a811684e79ec64df3b2c61d132ae016551415acf6c97d5ed83ed3a44. 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/NLUW21900873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66a66a918098af64e1b22cd235d6c44522bb15178493e6377edef395d1b1c43. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/NLUW21900874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb155c236e80f3fc266b23e74477cac413e4754ad24ac710b70f6daeec9bbe5fd. 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/NLE802200268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a355290d242202ce6a4da85d2a246bbe2cb3e988758fe2523bfe573e7b7c618. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/NLE802200269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb82bbd73226b68ac177704bae683167fa6b99fa0f6e42bc1e7058e7507d28d9b. 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/QZQGX2100001.
10 Years Of Suanda Music - Mixed by Aimoon
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdff3c81b7eb6183fd46b93fbb3cca2c5fb9a4076e32567f497976fbd3ee30e5e. 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/GBLV62315281.