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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f017bf2cdacb549f962c29d2962a43d3a84cada50decdbefa3704bb40b978d7. 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/076c7325-908f-48db-bbf4-69316ec86bdd.json and https://artists.proofprofile.net/proofs/artist/076c7325-908f-48db-bbf4-69316ec86bdd.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x112aed434a7d9a006b524e36c0c38019a07dd44369bf6e6eb1fe7104d7bb27d0. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPV752307744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3917650701979938ecb8286a5afa1e64610d715c797bd34072e0e7bdec487495. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/JPV752307917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7882e389b659724d248701a71b2e7db9754a7fde6cde0a9a27c7b29031be632. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/JPV752308052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d6b48f2bf9e7aea97dcb9fff1bbdd6318e8a477a54606ed8a888d4b77299bd2. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPV752308051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec4866570dc56c41da7e60772bcdebe78dbc36fbc6cedec38144785354c87ab. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/JPV752408340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1674ee6597a229c5b62186c40bf5293e634a034c44468d741566dd89a0d71897. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:42:18Z), 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/JPV752408339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f98c751c4e772a0513912b9a539e5d351bca148b90b36e9654fb69dc1b39b8. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:25:37Z), 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/JPV752408343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc64055239559aef32ce640e09ef4330ec9ac9f88e48fb4ac554054b8ad17cad. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/JPV752408593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9057a69d8812f0e196f807eddea31bf3ac88889013c7cf0f8aab79f1f4fb4179. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPV752408899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e1c51045613db9e67e166461debed3f89801752d3a6ecbc60a22f1586f207e8. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/JPV752409128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8239c820cbd384d1b565d8b5c0628b2bd467c67dcbc846b3213d4c42417bb31. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPV752409129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75e593ca812f162de285613d4ae6b6ad09cb2602509362d4e7dc932a793ed287. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/JPV752409630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec5e8ffab131a10ecb95e25f0024681f5cfb5ca95f6c70872f1a751ed9b180d1. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/JPV752409631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0948811005a330fed55311eda3ece7c678b690dfe3b89d92f4399c1e9f45b53e. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/JPV752409632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb8ec054c85f4da4130e8f8399f8ba42dea0bc51dd293eef3dc1b0878eb30a2. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:27:42Z), 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/JPV752409634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cf6cae945b72af8cecdcc7c976ed3c150450c486c600599879385ecea52f34b. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/JPV752409635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ae872d1d28ed889c00754f2815d61a1b2ec9140137de0759415b4e4745572d. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/JPV752409636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbb889639c56fc2c6c801aa31d9f34725c372d3d13f997b058e9801910e17a32. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:46:29Z), 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/JPV752409637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb75690dada6551e4b2b34cce89aa8c37de5a160d23b2023ae86101e3e1ddc4f. 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/JPV752409638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90bdb1530fd6fcc9ae37e69a4d2b66094906780756925832fb78b79139b57b75. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:41:41Z), 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/JPV752409639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x614fa1b7b9b35df05218a39dc0c584dc80473b5b762a3701870e0fe129cade70. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/JPV752409640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c8fc68cb797902bfd034bd7258ae23d0cec51aea6534fad98beb25627fcc61. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:33:11Z), 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/JPV752409641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc793c2ff339440c59a802f3d079b91cc9f5b9a0d0b9e00b7e78635ceb6959425. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:03:49Z), 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/JPV752510091.