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 0x7dbe0e46f1e983b3a4738a459c263a0a60a29686f06087ce2d87279c31f87e26. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2ca321b7-9441-4399-8a47-05a7ff6fe5ba.json and https://artists.proofprofile.net/proofs/artist/2ca321b7-9441-4399-8a47-05a7ff6fe5ba.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 0x01b7efdb6f93d4f0128c03c30248cfcb4bec1d9f2be46d319c14ea5b0608c132. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BXLKS2000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c55aba2933d18f09eb25077a31c5e9c0afb51dbfe614050c2b507792f6a07c9. 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/BCAKH2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2feb728fef9766281b61941a276e11aee5ad1ccfa705a1422e30f3a53cf76e3f. 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/BXCTR1900142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb9d60b29384972040f77e6b631cfc1e97fac2a59aacb6a5545fbeea2bb7a042. 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/QZ5AB1891206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x877bd92d6a2e5ae146c5bf086121a2ac8d481b918fcb8aeb3b6a2a7bb13b7b9e. 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/USL4Q2446080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x978eea65759dea89204b32bd505490530b32eb6d34e42a751a3afaf1de5aaa30. 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/BCAKH2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x929be03a243c0ff0872a304173f4a54aa4e50b0291cd2b38e3540b4fbd45d79a. 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/BCAKH2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9140c95b4342678e7882413f02557a1750b7d255bf4e6b93b93e091eafe4b6ec. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QM6MZ2010638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71302fb669d33024213d6496ab32e0cd59d51f7d81ea59fab958d99848decbdd. 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/BXCTR1800026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ec9c3657b475bad976e8a12e042517d264a9c8a7c5044e31a4cf799a2757b0. 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/BRQIZ1420893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe904505ba181c407b6255ec45bbe94a79a9b13595b40b969df341a3c2a1db5d5. 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/BRQTZ1810291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b2d2110eff154d8a157bbe131f10d6119881d2ec78be808d6e41781ada9d37. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZ5TB1997223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0532313933ffb269dfca821f5d7e26aa3d29b588d1639999a836ce50df42029c. 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/QZ5AB1755404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e6def78d28951303d118a0d36803b32ef4646ad146bd5d1e3f63e528a1fd927. 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/QZ5AB1818439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x438bed39bedf76ff5ae2568e5b550bcd36219408c39179416c8e2864977f6719. 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/QZ5AB1894948.
Bella Ciao (feat. Andre Sarate & Adolfo Celdran)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62af3bb66a74d22a5fa32c8733c93811ae1d1301ddf40525cea9a0e2ca21d784. 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/NLZ541800564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ae125642dcc84ed75f329ae9849a06f06d158947ab66aee9b9524f34fc03f3. 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/BXHBP1800027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da5994cab22ebc25da4ff575dad952dbf05f287374dcd2a6ba456fc319decd1. 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/BXHBP1800029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f1da15067f012c98a79b6035c8c1f1c892e2bf7464e6c621ca80967b3562c11. 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/BXHBP1800030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa14efb7c520026412533f60b5375a0d0a903c2472e49114f33b5606f5b0191f. 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/BRU5R1800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fc421200d79e5a83f816c9736eabb8d9d18d1c07da735290c35e3fed0ae89b9. 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/BRU5R1800008.
Sentença - Voltech, Eternal Soul & Deep Motion Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x408e85d43a7134d077096a6edd3f6808a0a117eec2c3da0542141ef180084efc. 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/BRU5R1800009.
Sentença - Guz Zanotto & André Sarate Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d20f079a987f54bc3bfd9e15feda2cd7bdd6eda6a19e1becb60c89167ef259. 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/BRU5R1800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa58b968d4749257610afd8412409f216557c84c5c69bf1e6916fd59f4521ba3e. 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/QZGLS1984980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e293998a201ab82d813de48717a19a9f6afa6acb7b8be4f74264e27326e36d. 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/QZGLS1984982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1435a87fee9e621ceba2882dc7cf61a5cb6ab11ed96a11ff232a2ccfa3002c96. 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/BRU5R2200033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2701c9c5ac01ca2f4007b31f4cd14fbbdb8e8e6d4729f08f28bc6dfffdd9ab28. 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/BRU5R2200036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2718c033589d9fdf77d9302e48e32a4ba6ed2b9c79186386a3c6471ef1442e1c. 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/BRU5R2200034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c6a30d07e4904672aef543adb85d348d21bacc5c3a08900ba954f384c677723. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/BRU5R2200035.