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 0xf4e05196f443230269f84f73e05c8aa3647830e1530ae71c9764f07dff63ce48. Chain 2 (Bitcoin): anchored in block 954062 (2026-06-17T07:39:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/45904e5a-97fd-4e87-bae5-6e00a4275fe0.json and https://artists.proofprofile.net/proofs/artist/45904e5a-97fd-4e87-bae5-6e00a4275fe0.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 0x349b996402ca074e7041d3207456274a5cc257d30a4a062e4701b049ad0d67bf. 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/CH6542227973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xead2953ff27ce6c828afe6bca4f9e889e13017862eb637dc0373abea912b30ca. 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/CH6542227982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb3f707f351650907e4c30dc78ff514858ab4a245746379b7d5708b82f775c6. 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/CH6542227983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340e3f488a05a247a27580620fcb4fbcf83cde78fb0ff45f69a02825c2c2c06d. 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/CH6542227985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d7fd188e713a16154f4f5b0d5e2b9bb7612bc9f035bfa1bb26429e6a734e4f. 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/CH6542227741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb86bf4cc11cfd7076ba4586ccc57e2157c91c5d24142c8e744691e6391945a70. 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/CH6542227742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e3d787640659ae220898b7d61c3c484f8696a44a25151ed03efa7d43b4783f. 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/CH6542227751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0390d58f7a09df25b1827eaa36f5b30922376a34106dbc8432ffc18b73627c32. 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/CH6542227752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x477c3f113bb2833fa0018263c31d8aeaa4035c02ca2dd27c8a690f1aa912e46e. 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/CH6542227753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6aeb2b49f18560270cf262a9d27e5772a0cbe967b9c3d13d9ce92302c61b168. 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/CH6542227754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2604db3ace6384060e1eb4a46e472dbe24cab34dc3161f8e90fba60a53ab64fc. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/CH6542227980.
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 0x8121c9efe2c40edcae20396545bfcdd0733f7cb99f30e651851456d4f701df38. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/CH6542227981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d85adfcf57036a91ed9373d32533946c29472cf2bde97ed5c228674278477d. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/CH6542227984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14c044d8793f2bbf3fc1775093d246edcb8525e00e529e395934bd6e8b24b46d. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/CH6542227986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e9c426bdfbc338268919045fb6ea8148c036d1a1be639444a35ccbc402210e. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/CH6542227743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x844031acc6325d34ad1915417144c315fde75012131076b5f57a3e2e50ce581a. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/CH6542227750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x689564262ed4d2ab1f012ccaf5447f61fe98855d58b2749ffe78721774899feb. 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/QM7281950207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e697cdf0eee93b170a5da8db01573bc928c27e80b04c7e0502549c68bc030d4. 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/QM7281950208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa43cb816e70b0b29d0363e83d2cefed9693d27745c45a463f9f626b560ae874a. 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/QM7281950211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7606f3275fb780a0c121cb1d2681bc9c9b18c6d9fd294633e2532238adb9d719. 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/QM7281950213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d77d0d70007760b1155f6fd8183c6d23fb7fd51cc93581d35935c620419771d. 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/QM7281950214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca6af06654f4a97bd2c5b1e092e525d47475d07ef3ebf89f83f8ebdff2eb1826. 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/QM7281950217.
Endless Discussion Towards Meaningless Consensus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x034465ac11dd38a57d2fccfb27ab5d941ff20303550c6462dd196731320ee079. 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/QM7281950218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f4ff2db907915ac745360454d800c61f51ac41f7d9bccb4773bdc0328b5b94. 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/QM7281950220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89b2eea5e43cb821e45fb1e363ac985915584a3069c8f0326b615fe2f534a9ce. Chain 2 (Bitcoin): anchored in block 957249 (2026-07-09T02:31:37Z), 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/QM7281950221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef2ba83fa0ff25aa3ea2897ab9e917f398e53cf235f1ee062c86747b05836f7f. 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/QM7281950222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x635d6a74f305798c32071b73abbc8102d8371420b36edd5ef0d9e71d3e87a0bf. 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/QM7281950223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e8a5bef43429f7ae8fbce775c60825fd03ff9763099bb8ec0376abd97fa1f3. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/QM7281950205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaa41253ea5a4c7f9306aeb021006080b452e70e3962da34145f6690f547780f. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/QM7281950206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d2e2a87b07741b98767c5b75ed03f9dd16e1cd317e3aa5c602fa3b78b34a6b. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/QM7281950209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x314bf0237bd544e142fe6d4bfa8e904e3171d9a987bc2bb88bd1893cdfb7904e. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QM7281950210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x939cf146454fdcac1063997d7584801a04152eafb2c5663b558fad0f2ad27f27. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QM7281950212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ce9b448df144a28ea533519453f95e1150416a32199b21302951a63fe0d5f1. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QM7281950215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe71c02ec06c2712b760d8582fc44ac29c67d111917e7360ca3f99cfc5d20064c. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/QM7281950216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4288b98c9513da97ca232bada6c26ce212afbc519add3d646e08aecb08c4ec7. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QM7281950219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc7364407f04af639f8ac560da2f04840aa433b881f7339989f5315ae0ee19c. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/QM7281950224.