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 0xd09cdc5dd2f064ce320d24acd01a8436313dd7e48ed09c8c7488cecc8cdbe377. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/438ada1d-9d87-4dae-8972-30ba9da368eb.json and https://artists.proofprofile.net/proofs/artist/438ada1d-9d87-4dae-8972-30ba9da368eb.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 0xa5b78a626db671300718fedaba8c2a341ef115465bca14bb5433d3c7db942438. 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/UKZGC2404186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c707139f0c0a1ac492516d355f83db8309d0a811e757821e85fbd3bd3267cf2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/UKZGC2403252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84caec69cd16be5b8945a06dea7fe77098cfa699efadcc2800ab7149a9605b70. 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/UKZGC2403251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84caec69cd16be5b8945a06dea7fe77098cfa699efadcc2800ab7149a9605b70. 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/UKZGC2403251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c707139f0c0a1ac492516d355f83db8309d0a811e757821e85fbd3bd3267cf2. 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/UKZGC2403252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e187be6f380d8407ccdec8059d9970b718884ced90818bd9803a6c60df7a4ba. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZMHN2254506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe68d2ee6f35e10ef70d662389a26644df1a49107bef6f05a4fcccf4ef2b1fc5b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZKDK2217190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1d0a5d47de1d48fc942178df6e6fc403b76f5b350eea37b1b386aba4acc90f3. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM42K2277294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ac94529dd4219ee720a03bbf216470ac6269a47defb273653c405585c31c01f. 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/UKZGC2503774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb92faa9d3e1633a825665ca1e24d248829bc0f45779aafa170ecb781483ea292. 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/QZVEM2562201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bac7c6c5af59e017e0c367608686cf083e0b935431fe07921c4886365448509. 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/UKZGC2410799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac286c4f1e9ca72e2948dfafa5fef8501cbe7bf293a4e9fc2f90902d020df0e8. 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/QZNN32310392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc9c13ea4365c2c6837028ea6de42867cff9893e14889c69ebffef0339e8ff25. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM42K2287691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b97eb7e9a41df3eea49279ce0bf3227fd95f10320ce0b31145d3e6bdf8c4fcf. 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/QZS632110743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda881d5fa5e88973f67b5ec266b8c2a4687520141eb374f359d509a3f3780f49. 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/QZMHL2018375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d331f408296f23cdf8e1b8e5c47190b2fbf341791d50038f32ddc23f5dc9ea5. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/QM42K2019345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x825d67d7c307ee50fb525f02da78b56928a780757e06f5e179ce7e045b784062. 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/QM42K2086379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x742b9b473fdabd649c3d39f1d617ce940b555e000122de384b05ca6146c89932. 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/QZMEP2138594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f3b6519dbee3ab89e76f166d86eba08406cba75445c6a53fcf7143b068657a. 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/UKZGC2404710.