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 0x04d9fa0f57b0ff5354d927d6859b80d1077e9b1a899bac2647867cb78019add0. 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/fcd5d838-8b3b-4f20-a3a4-48aa8d96cfe1.json and https://artists.proofprofile.net/proofs/artist/fcd5d838-8b3b-4f20-a3a4-48aa8d96cfe1.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 0x6977af293bfaa5ce9e111dab708671bd31e045b090b4b7e458ce5cbc92483ff2. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T08:37:45Z), 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/GBWUL2259086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec47208d8828d81b619198379f0035a47f3586e8cf8000507272ed888e8570e3. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/QZWDD2267591.
You'll Never Be A Rockstar (That's Okay)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98552234a72df00eb617b336449faeb61a22155e649cf58f6a33cbef33d31602. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZWDD2267631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02f5de40be6a95f6eb2d7311a3e663ab2b4d796b42876852449015761e9ee95b. 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/QZWDD2267653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad6ca4eb6d93614bc0b51cc55f29a0d6802f69ff63631adfc68d26a52bcebcc1. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZWDD2267665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf369f2ebcb8eba85c2727e11a45b59e9b19401ec1e93e7e74f36b4ffbe435a08. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZ5FN2355725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e1d853a0c48a9bf6ed85501833d298bdd60e91acdee827659ce0eeb840c760. 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/QZWDD2385872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe3b08b7244296e869e6b0d33ec264d2d0d67221cbd747f48e84fd85cf067413. Chain 2 (Bitcoin): anchored in block 957552 (2026-07-11T10:04:42Z), 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/QZWV32373985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd716b21216f159acadbe1f6f498d61f07137930c744cbe0debe57a002ccf82dd. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/QZZ8B2340044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x762cf81ca6dcf2a338bdb27701cc3a03d089719054241f021b671a51e927c568. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/GBRKQ2416019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe04c8b9eeaac4eabb8e78255aab4c385b7c8e0a48c914e3dcabc1ec9712ce200. 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/GBRKQ2416024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fe1f0c7cc6447eb28830c302f06c665ef1046fb84ed7c323c43cdf956046e6e. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/GBRKQ2416031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14254f9922bd317b897da9284702317f7a33144c6cb77f5ae02ab116329375ce. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/GBRKQ2416043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefaaa7eb748fc5762e76dffc78ee1027084bc87814e799e4b6bc52c26c779e11. 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/GBRKQ2416047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e255af57337b709b17da7a45808b3fc5afae70455c82ac71d3ef52aacbe3fe. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/QZWV32435174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba6272bdbd519efe17a150f73ae38f532bdf7285f2ccc1e8ebe454a611e7ca78. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZWV32435177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x966d0b0a5942a5921d8820ab1c5223b7324ee05d15902c9970b5a745b78a953f. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZWV32435183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe61849dce44c47c01941e730fbd37e32d2be65cb678bbe90ef34c75a65f062aa. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZWV32435197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8712a159629d48c4706587b1b4a9f58737eac61ffcb1a1c33cd1a4ae61eb400. 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/QZWV32435202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93caf95359a2fcc6c85b3cdbb3585879d28c24df9408d6a99d224975f2192f8a. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/QZWV32435207.
I Hope I Never See Your Face Again (shhh)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bc79989d7598f20f958813777db57e017cd8636b6257297e3ebe35a61d902d3. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/QZWV32435212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda22d2dd0d6266a106f18289eacef4670497c57ec29a3c058feb555474089121. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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/QZZ8A2415928.