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 0xcd4082103b98b39d0d0c793efd06607ac10d7d76836489c454741115cd1a9e5e. 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/b32f52ce-644b-440c-acc9-6775cf2c1957.json and https://artists.proofprofile.net/proofs/artist/b32f52ce-644b-440c-acc9-6775cf2c1957.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 0x481eafbd8d50f254e327fefd963ca8853a82d5566634f920bd1845363a06a72e. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/US5262023567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37db87846df7b90b0bc7ea775e676e9bcdf1a1971e21c6e6a6c7aac51bf6d0a3. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:01:50Z), 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/US5262023569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45adab366054166d84809eb3d3bb8777a78afd58dd6a1a701ff4bb704a9c48a4. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/US5262023570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x432fdaa1faf042efb70e84c5c23277cea6114e655be44b800e9eec930eaac3bd. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/US5262023571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8681617f2f5430fc66f4525e64449224cf66f60c592e3d9d56523b90943c855b. 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/US5262023573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf7ca43d7225e063de236cf67a78ed09c2947c1e6043dc2e7f7ddfc2909444c0. 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/US5262124463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1abc17ec514b6461ba3560f6a18a27d2eb6deec6a3f19a77d87a1b92276e6ee4. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/US5262023885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4898257758340c63cd8cc5bab6142bda3da3959265f60f2b5a3db43e9322c3e5. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/US5262224559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d6e8348b10d6c5f8254cb2f96cb4e10c1a50a5164a80e90daf7ab0510e8647. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/US5262023528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a984474ecacb7ed36adb4a5cc82da3050b0efe12382cb2c3e8ab2c0986528f3. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:08:00Z), 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/TCAEA1826690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8aa3f54736439ffa47f983df8777047bccfaa34eb735a539d24382f4446c7ba. 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/TCAEB1964350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb29a1ef7c9a9b53d62c387029edf8b15d40d0b71ddeb002a140a799139ad5368. 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/US5262023566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x481eafbd8d50f254e327fefd963ca8853a82d5566634f920bd1845363a06a72e. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/US5262023567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c729be91329cbc410f0968c15ec3e1bf2f414548ac7781e8fed3abb0d6801d. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:41:21Z), 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/US5262023568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45adab366054166d84809eb3d3bb8777a78afd58dd6a1a701ff4bb704a9c48a4. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/US5262023570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x432fdaa1faf042efb70e84c5c23277cea6114e655be44b800e9eec930eaac3bd. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T22:40:02Z), 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/US5262023571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf7ca43d7225e063de236cf67a78ed09c2947c1e6043dc2e7f7ddfc2909444c0. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/US5262124463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1abc17ec514b6461ba3560f6a18a27d2eb6deec6a3f19a77d87a1b92276e6ee4. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/US5262023885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4898257758340c63cd8cc5bab6142bda3da3959265f60f2b5a3db43e9322c3e5. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/US5262224559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c2c918c7866f8e6378e63afb5f815e8ba2e826fd6224259f15597a38ffd40d. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/US5262325481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5091a29ba0bd9dbfd306a930c4f1993d8d67d41bdc4273e396ddcb73fe3f74a. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:47:23Z), 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/US5262325485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd836047fda11f9b389b58d3d47f55a630f3d093b992ffeb6361da1fbdfd1cc20. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/US5262325486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c5f112747d5662a408e4e29553f188fa65ef499bdf88ef5f0ad1d635a1c369f. 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/US5262325490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc513c0bc84b108fadbefd20d19cc38692f4c7e0e6a4ada1e748f1e5dddb4a365. Chain 2 (Bitcoin): anchored in block 957695 (2026-07-12T11:16:12Z), 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/US5262325482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5091a29ba0bd9dbfd306a930c4f1993d8d67d41bdc4273e396ddcb73fe3f74a. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/US5262325485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd836047fda11f9b389b58d3d47f55a630f3d093b992ffeb6361da1fbdfd1cc20. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/US5262325486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eab815b2ced5211c5fff4a159d2986658338307c6a95c8f763e09b644432ea4. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/US5262325487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c533fc95e3c194e92e9e6be193b3573f57b5193aabc0dd218b24f5504138fa. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:32:35Z), 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/US5262325488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x849c1d86530a1168fa87edde87593789d50edca0654d028d13bf4b58eae91b4f. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:42:04Z), 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/US5262325489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93480ea627d950c07cedfdcf848b9fc335ef205b65809936d034da20e8f20b7a. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/US5262325491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2261b9ecc9195c2802c227d8726b0e1a4c8b2082fc5166d3b997329dd93073ba. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/US5262325492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ec685038713ccb3a3626eceb06c3b72604bee5215b12817b430d47a8771e90. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/TCAKB2512579.