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 0x1f7d144e4387b4c359e617b8984ed73ba49fd17de8d2af609f7af225fda9a6fb. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1cfe0e20-0f03-4d62-af24-aaa2325408e3.json and https://artists.proofprofile.net/proofs/artist/1cfe0e20-0f03-4d62-af24-aaa2325408e3.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 0x13aa23c7f2b6fe5d15047ef02a5774318c7b79e1986296aabdf469cd1025d557. 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/USJX42400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15fc19f5815078ac80bfd3de7f2bf341614d38d09db5b93ea35b8bae7902e631. 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/USJX42400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13db0c47ecbb4d8d4e7e596a9a918e3888d93341c5a1ffc7a706283aacacb068. 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/USJX42400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c72bd5ae9bafddc2c7a7ebdbaed6a8678e6a9a71fb98ee9dbfd5fb723a7b28. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USJX42400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f1d183ec216594064646f453b765a93c23b77502f313917896b38379a3f4fd9. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/USJX42400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d5109d6a5d3285934946dadc0800c542dff5a6fe57b61e8f3247e82e4e43ae. 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/USJX42400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2649214f144023905baa5103857a99c2f6348d2758405534bdb400b8e936387. 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/USYBL2401419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9558dd0b167bb2d72ac86c5df317351868a85bcdcd79a8fccd8d783cd0e4175e. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/USYBL2401420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x724d15c3968c07fd488b058fe1b910411dd9751f4645975ac3cc8814e6f456a1. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/USYBL2401422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61fed4ef029c71a7dc3bf47638a76936bb31982832347e6663a70aae8db3b4d9. 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/NL1MT2100120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x311105a6ad962552d62c814280c079a5ab2119b674a738693a81acaaca2b205d. 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/NL1MT2100122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdaa0c5b99b30d257294fa6134c430ab92aef2ad8de03446fc499f9a726138ed. 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/NL1MT2100123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c712aa459095f2fff9f0338084cd46e1eaa69069526a581e9c35d60b55d261c. 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/NL1MT2100125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96a340d0fc30dcb516eec12f28593707e5370b4137281fdccdc5cf4a489a68a. 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/BEZ351700090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef29096e37aad7f7292d238c1aa117c16b9ecba79cb1a71252a9cf01671ca72f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BEZ351700091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a50e9caa91f1c9d5b4789e50a396edc3dbc8eb88f28f1025beecb7ad998df1c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BEZ351700092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff160ef37f6bb12f1b2a8ab5ae2a48fe19675e06fb174c35d05f7bd10915f14. 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/BEZ351700093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9174a350098f2819014a221e39bfbb2ea54394a6bcc68222e3f49228f2d41c48. 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/BEZ351700094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc153951eeaea115862ad43620583df8b4889d77b5198173d48cd4dab075d0103. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BEZ351700095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b7129ec681cadaaf5e788f33bd889c6aab10d5666ef65b21fbae4075b3c44b. 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/BEZ351700096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e184a528486d35c3fb7a33301dba1d5818a293cee225d2bee58a4b0f8e68ad4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BEZ351700097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65780d7bd4432ca8c1524ecf2e5df02da1c9d7a0ca75b1a7cf4226a6792f0f68. 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/BEZ351700098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f22819796976bfe2431dd4e1b817f77bc065925aa6cf27dcc415fdafce6345f. 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/BEZ351700099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40433d6e9cb2b66ddab4a51787b7040dfb640259a677eb6f7ee1fddff508688b. 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/BEZ351700100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x954720084488b35a16985acef250fac74e31693e2006b4169129145dc70c2e71. 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/BEZ351800088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ddd9844e5cd80b56234686df9fa1f4338f8dfdd249815152950100ed2e4a77f. 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/BEZ351800091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef50f4310c52ac8def39bab1acf6fdf0c72b8f4482d1fd97c2e2554a5a799e72. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/BEZ351800086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16831829b4119f8615e1a6222a69ffd567a4d453ceca36667b04e1dcb70cac72. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/BEZ351800087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc562d23a469a23d0d0beb96544806225c9c1dd4d93c3b0f0bc6e70092165c4a5. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/BEZ351800089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ebe506a74a713df5296e863c2833eba02b0a09230e904b41556adb68df84978. 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/BEZ351800090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad3c2dccf3dfeefc31b02ac095aced483bec78f8f717efeb3eab2e7860ef38d. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USYBL2300728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c7a8379df3f477300f38a00ec3f1fb86f2927f64ac3427baf231ac432c618ac. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USYBL2300732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a9830fa387d48c3bda4c60b0dfd4e184eb990d98923f2f8b1658069c65e0bcc. 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/USYBL2300734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d1019ea325786c8d69779c6094fac1e59efc348bc01febacc29f5c285321a83. 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/USYBL2300735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276838704be752377336787825379cdeee71e95697a65adcaf2e5fff9be7d78e. 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/USYBL2300738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fe06b082bb2b618ff945726cfefc7eca6f5e6f1e6041a7abb811777fc9979c1. 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/USYBL2300643.