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 0xbf24289a84503de300e9d43eea8cfbfac1dfe5f7f28f13edc18b9099837e1586. 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/992b2b93-8c0b-4bda-bc48-b2f1a350aa69.json and https://artists.proofprofile.net/proofs/artist/992b2b93-8c0b-4bda-bc48-b2f1a350aa69.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 0x287938f200c751c92f9d109185366120e31a147cae971016a4db846e8a5c6a39. 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/QZES92186611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff2644897b2aacca507f7bf1d46dac693f84c95f113e68f1e665815b011c52d. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:18:32Z), 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/CH7811104997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11334db7fe5d2e12592d6f09784eca0f68f9b8d5a71b19f0267ac5500cb52ea0. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/CH7811104998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed003b38a964100b515a5d83b96dd647ace272adbeed0d0fdcfcff5a4767b15c. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/CH7811105006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed003b38a964100b515a5d83b96dd647ace272adbeed0d0fdcfcff5a4767b15c. 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/CH7811105006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aed55e957da5802ea83e10511ecb04af0c46789b0782aff1a3e49b3c5747c04. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CH7811105007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x936a39f59b6bef44b5f3fd4d6202056a4faa19a302b881995cf44dc019167fc3. Chain 2 (Bitcoin): anchored in block 958498 (2026-07-18T04:54:58Z), 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/CH7811105315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8472580f35ef9786a6b5afdd0ef1f082f11d8f81a500f1cf4d665f07638a5972. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/CH7811105316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ada305db03742c95233f13e51b17d167e0f747b39e47be69a1a4d3a90e425d. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZHNB2280382.
Seen It All (feat. Spinabenz & Lil Poppa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a4b6016cf9cbc6ffc72c9751d64c1a6e3dd2bbc646dd4a4f9227cca4252c9e. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/CH7811107292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a4b6016cf9cbc6ffc72c9751d64c1a6e3dd2bbc646dd4a4f9227cca4252c9e. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/CH7811107292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa6255b62529568b05454245864a6e8ca9fd186b244aa0035c343ca0170d2cab. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/CH7811107298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b0c1994f871a56b55f0235bd7043cb0ff9bc972aa09e0ef9dbe4ff2ce5d7529. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/CH7811107887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce8c115f39baeecbbc4db5a96cc99a4efc2840a36f495450023ce7e582c3c744. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CH7811107886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b0c1994f871a56b55f0235bd7043cb0ff9bc972aa09e0ef9dbe4ff2ce5d7529. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/CH7811107887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb33bd65949cfc743214de111b15734de4f9411dd2fc7da5fba16754319d000bc. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:18:45Z), 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/QZWFH2334605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90fa1d6c79117ffad54314d0273eac4e492f66b0f5d37ff26e82ef70ea5be9b2. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZZ7S2444955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x902cc1dc3e4d41d2a0ee3cc031f3640ae24df127de1d1eaca771a563c6381f2d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZZ7S2444958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ed8fc6fba8487efad5acb672acbb3b2d3d4d7332e1b8b72498efc66ae333546. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZHN82549072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd02361ad884a13fe60ad562a2010ce88494d8dc1f3235b5694ffc1563217427d. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZHN82549074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7854d0cd24bc218b9a0790e38a339acf1ab0de5d2eeddcfe41ed43c1f4faf04e. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/QZHN82549076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5351c7e6e232bd0daf9315479108f082252ff8632200eabdc5371ece733c1961. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZHN82549077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc49507bd8ea801b479f15ede710d8d4763b3390d52c8556218a8840c22263242. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZHN82549078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75047d23e0074ef93c07513357e161382e53814d69bc99985b768a98ea403e59. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZHN82549079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f3bd5e84f8b9dd5ce4c20f1d00e4c55f875eeaa8ac5a52664a5af5e4175718. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZHN82549080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da62afcad3ed90313f3606cfb545dc19ef04f5f53e8c1c25b77060497a08ca3. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZHN82549081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f3e186d5c41e2b0eee23744dc811c12ca86732e5b08320ed29b873ec32f870. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZHN82549083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ed8fc6fba8487efad5acb672acbb3b2d3d4d7332e1b8b72498efc66ae333546. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZHN82549072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf5202c1eed6f8c299e59e561da371c98f12d45c19bc9057af7fd59c343eb3d. 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/QZRD92201814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a1bc41e08c34dd4e23807c6d297c4db790c1f0a2a1f5aaf4fb83cfa7c7d6163. 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/CH7811105254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a1bc41e08c34dd4e23807c6d297c4db790c1f0a2a1f5aaf4fb83cfa7c7d6163. 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/CH7811105254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f80a2585ba928ddaa9e57608d6179a1a875e99121941ac8327c0ed10a601042. 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/QZL382252487.