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 0x85bad097c6f5072f9416647592576239485fc3e574c8be0f5d7d0a8ee89837e3. 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/00cd10dc-8491-44e6-982f-1792d240b0ae.json and https://artists.proofprofile.net/proofs/artist/00cd10dc-8491-44e6-982f-1792d240b0ae.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 0xcd19d0483a93b2e314d62260c2e8c2c9bde2de97a18ae5a3aa7ced1e9d699bc6. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/BC7V52400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2dabe72608ed886995c5498a7bb29e14ebf6b81e88de693fc76e39720824903. 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/BC7V52300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2611747693da31b79bdd961ab40fdd7bf315ab84f3cb14620ad16a7ead113667. 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/BC7V52300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d55cf476a2d623a4eaecf1618160dbf9a474f7cf3d3ce79f6d598c581970cc2. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/BC7V52300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d91e45f39fe94fa2d026bac9f5d910e2c78aaed4abe11f03aea00ccec14cf0d. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/BC7V52300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5946f143d2b2c1f66632d0473a6088131d7f16be66201d73c7798aea55bd16e8. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/BC7V52300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe51fa185d3082f58e3a7b298e026dccead771aebf7a88b44a3cc14adff21a0cb. 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/BC7V52300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bfdef2cbef708cc0b72bd7b25910af2f4550c7f0ac117f93b755be099fcc0f2. 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/BC7V52300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef0f09b1dc59df747d6e556febbbfe7e9f80c4a296bdfefb72762ab8db04975f. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/BC7V52300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43955b9818c66b8229e178d8900e69fba1d216c28571b4404475b1ed7282460a. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/BC7V52300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0efcf2406c75142911c0ad11b7c80c89fc0b7bb316e92ff1bfdc81e62af3d081. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/BC7V52300013.
Ruas Desertas - Luz do Mundo (Prod. Jovem Dney)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5248fb9be550a045b7b41bc7635bd7c835cc4b2c476013476533f3661b987d3f. 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/BC7V52300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c6e6729ac72b2f2fe4009012ecaf93d98ddda7b62e1a8aac3713d374edb7bf. 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/BC7V52300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71120c36091ea5a063ae82e8bd20c3aff9e3e485039aa70fd6fed822fe5c108f. 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/GBMA22442520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6645730c3f494993f3a662bd4784f6159df4a1292aeed3a93347a76a6e89a80b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BC7V52300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7930349a44584d3958f34c39d078646ded29c6b08513dc232bb6284a36c16a7. 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/QZZEB2303012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd78cdbf8cbb1d37687e1e4340046b45d68bb03cb5467ed11c1b9415034ef333c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZZEB2303138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d1b4e210b520f738f2af40d87225b0779f575c724bfe08bbf55e463da80b3e. 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/QZZEB2303140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb8d5fb94a94381e863cd2a7189c0035e3ec74a7f66e29ea6b36d121e5052a7a. 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/QZZEB2303176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b8800e03ca6a14b8e9be4b517db540e13fb0240a3338f73c26c3ac6e27bd216. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/QZZEB2303183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1726209d4072a9023f96ad400ae424653a85e6b7b3b523de9ab9eb4e5a4a7751. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/QZZEB2303185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f7652f04ec6247a5d2d2a731af8ffc70039348a9fc59850ae6885f4630d190. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/QZZEB2303192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba51ba3ebd869fc60e9bb79d9e22fca0015807deea7d1e6dd39e945ac5c093c7. 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/QZZEB2303248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0514be99b4d6cafc012782d20a085bd53b4a2eebe4a734d67ddaed3f166813a1. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/QZZEB2303262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3521e2f784cf3b326f9a3c05f5ed189d80592da6ecbe95fee4ebe7d19fbbcdf. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZZEB2303270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x787d5af4719fc5bea0e28f0fe572f0400704f0af591df822d362803cacfc0643. 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/QZZEB2303277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e3998c1077647218fb6ada3ab0dd67e0cfe78df29b49995bcce6c8c491f148. Chain 2 (Bitcoin): anchored in block 956995 (2026-07-07T04:27:57Z), 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/QZZEB2303280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c5730443c05c250da8ae90211b98610002d50a6cea53b2346c0474bd03e103. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/QZZEB2303286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b4ec5c9e5da2d4399e81d6e7f8a43e04dfe3adb1e9af50653ef7b87eca16c6. 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/QZZEB2303289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd3ad2b99e4edf618145b14392ad78a5cb6566bf1fc2ec8d4ff72dadbd7c540. 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/QZZEB2303292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f303ad57b3533eef4a290f903a43f816e8b1791a18be9b5eed522df0d5eeb3c. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZZEB2303294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0922ebcd374847b44610b68d8d8a9c3c69ccbbd9e5cbb2e8ee7aa448bc650db8. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/QZZEB2303296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95e1c7fac3a0b089a97710a797b64b9857fdf676675fd512f76de92a247d2952. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/QZZEB2303301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3cd75787b3129489f95ba8f5442f824bfae28ebc17297b14ccc7a6f33d07e0f. 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/QZZEB2303302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e59b6c3af2a959d7ed83726abf3ff066ee5e73a82e3e6940edfe4250724a0c. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/QZZEB2303304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x415eeb0f8f01d2cdeb4fbe4cdf1ee346d987eade1fc746b1439f8b8c84f6210d. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/QZZEB2303305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f704d37015004a196fff46a4d5a9720081628256fcdf1b7d21d138dae6e9ce3. 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/BK18N2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d8abb746a31d1b6bd15c4fdf751d53dae6bd2f932a406967df1a07be470935. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/BK18N2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dadf8f7e3b49b026e69e58297bc767decd1125979e511c2e3976b34c968ef6d. 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/BK18N2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc386d60e25ee2c55ed4492e2de41a3b10db731c73edd81ef69330cb479600dfd. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/BK18N2400009.