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 0xd56f0d7d7a825430e3d41ad40a7b2f458f74bb925d7237d15dac07769b538a91. 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/39b944e9-1df7-4761-bf11-172b1d09733b.json and https://artists.proofprofile.net/proofs/artist/39b944e9-1df7-4761-bf11-172b1d09733b.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 0xdca295d039041b81a7017ab242a3f16cae9c3bd95d5cbebffa40746e88f35750. 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/DEPI82322672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b06281db950ab6906b3c38955597aa91449fa108376543bb2dd20916322a88. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/DEYQ92200238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc69e267fc4cba7d43570e03529ac192848dfcba07f75ffb8ba7352112fb669dc. 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/GX8KD2420812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17292f4fccdee94e32a358d32c8985e52dbd2e616d0d94a48cf51d6f2f49bd7d. 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/DEYQ92400309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93421e42270a1f1eb405e3c954e91066b44572ed474d0585cb20b686c4ff4b87. 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/DEZ922400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd8651e91398f646e218241afb8b38bf051cc24af13f7fef16ebf87cf919b613. 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/DEZ922400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98f264faf37b4d5ac8d3a9178acb5010b66e1a183634202efbf78a7f4ea1cb36. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/DEYQ92300281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8915ac288b54b77cf80a364d03ac2dcfec86ca0c35fcf8931779574656ccfba1. 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/DEZ922300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8cee4075b25b34dad91c1d13482c7e061bbbeb651b89ea86cbefad7e1195bac. 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/GX8LE2271710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ece0f6f146e41a0e606ba9234614168c4f6b89dc4da49079b610add6a59802. 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/QMDA62235582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a540cec82eabfa2e94fc813303a2af0fd40874ee0feb60d20a1db711db3f12. 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/QMDA62216043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x743f0c959b2f5345e1e2692f70d3c4227c3fc73565363a873aed4dbe710332dd. 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/DEYQ92200227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ff892c5db92ccb017f7588658e3fbcbf34a1e3c03cf18807373debf8e293cd. 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/DEYQ92200225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4952ad6221f2613d139564e894d24dbc3bde2b19ce06445b85521f7877de3282. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/DEZ922130021.
Enjoy the Silence - Caleidescope Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b81a732dc8fdde616539c6cdde87df177341387104c9390241a1c0106bde67. 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/DEL712010129.
Enjoy the Silence - Calmani & Grey Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf40654b572499c33f15b4e1f4d490e728cdbcef6bfc6a12ea59cb09f99373adc. 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/DEL712010130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae85c4f33255000f09eaf4ecf31a2b3cee2d33e5037374db48ba11e801858b3a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEL712010132.
Boys of Summer - Belthauser & Prdnt Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9722831555aad14368aabe860e83c918dfb50e9c2f06f61d23963f74235ddd9. 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/FRX201832079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd40ece36207095d3018befc6927ee9fdd8ee3e16c82c1055b19acf8f22a8d0af. 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/FR59R1880221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33db841cbe5eeabcf6169cd5a70a9ea03cf73c49a78d9e5d30a549fe5571929e. 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/FR59R1824672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x081cc0c7282fa03365bddb01f275e802d70e3ca94438227a5c4fcd64bab14fd6. 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/FR2X41840443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3255b7f05c63f6effd05f72d12753f70343c6e518cafa45d5d9370eb07e965fa. 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/FRX201787116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x055186de240fd44b940d4797f1925a66ea1468c34c08882dacd1affe48723137. 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/FRX201787117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d747d936634dc26e84ccebd418ce77afecaa57abbc0b58e66aa19d5aa21b96. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/FR2X41791253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc18601836703da8b654e91eff6955afc6b47ba4e4c4b7b07d7bce98a6253281a. 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/FR2X41791254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe67dbb678c2683d88305ba001365e2658cfc82cf74a943fbe121b8cd509c05c6. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/FR2X41791255.