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 0xe397ac4d3773e9a3c0ace827335efc8c778893beb2dd4c010e6a8ab33e36bf0b. 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/a860918c-4292-4f9c-93d8-501b581f1c83.json and https://artists.proofprofile.net/proofs/artist/a860918c-4292-4f9c-93d8-501b581f1c83.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 0x6f04a1cf321c7a0c93c6da8cd45aeb5811854a81445b5ae96483025dc919f381. 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/QZMER2023439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66699130714de303e242cfd4a646a8516a7f92fcd6ff7f08f5b9737cad71a6a4. 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/QZNWV2014517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac3c68cb7ba3dbe47b3f26a675518fd87f860618a753756aa89a68477b81dc1. Chain 2 (Bitcoin): anchored in block 957833 (2026-07-13T09:36:32Z), 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/QZFZ22195919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17aa11ae903fd6c39fffc08bb6017f3c9aee594431ce5aa0347cbb9f42daa5f8. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZFZ22195921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd62a593b7daa665d8d291708579b1da397bad09d915904dee67ca78968860bd7. 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/QZPLS2179546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b2c180b0048603bb5bf73b4f5b59dd899e2e5b492c5dfbcecbc38132a6a6dc. 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/FR9W12148007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f798aa777c4eee98a05a9416a60303af2b352af7d664afbbb86708f3a56438e. 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/FR9W12148004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1918e702aa5e4770c8f9898d97e9e84c4bf3b87e5eae6d91c225076b72d659b. 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/FR9W12148005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc04192bfb6b71c97d036e9c68a144a3f8c6daa8cbe960a3070fee3b716ab6bde. 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/FR9W12148006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b2c180b0048603bb5bf73b4f5b59dd899e2e5b492c5dfbcecbc38132a6a6dc. 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/FR9W12148007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c8125ca3f8a0c3772e09b6257b8fed18346088baed7f77379f498167de635a1. 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/FR9W12148008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa9f856ff823af44fffaaed88e28820cedb51965b40719fe991e411ed6496ca9. 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/FR9W12148009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8cb0e8c755e7a208522285973cbf5c876310f3bca3d175d0fb23298d4820408. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/FRR642200843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b5da6bb67674362b0b4d7983e6348bc7f32595947b143c04535c37015bb0579. 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/FR9W12304306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa48956e4c367b28fa3259f21f7cc17212157d10f68a84139e9bb6fedcccb8cd9. 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/FR9W12304309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6eb15d96e57f6febad102ed0cf6e272ced1b97538ef8e2b72da6578e3dc4418. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:16:25Z), 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/FR9W12524995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc914e5a07c19382209d4c3d25a5db1c1917189c1c923104a5b37635b0b823ca6. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/FR9W12439584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x447f689a91f308c35aab414ed6853e515be1860f3187e424313870ab96b557c1. Chain 2 (Bitcoin): anchored in block 959018 (2026-07-21T16:51:18Z), 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/FR9W12455416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1027023dff81104a50bf861ebc761388e70bb8de5557090623a2ec47e5dbf9aa. 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/FR9W12439585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa1d419c1606aff02ca9f4c3d2cc0ac4fba89c99ca371e4e03ceb5d59b6c83ea. 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/FR9W12523140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d86902dbee595b6e0343f4ccc42600e053103b4bda9207a652d27193cc54bc. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:22:01Z), 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/FR9W12523141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b1d42a1e261692ea6c43aeb87089d1f622c89a4286b246fdefc8de316e539c5. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/FR9W12538815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451970082a9d5e5c161e5926d8ef65f92831398b499c47186298fe9c2598da33. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FR9W12538816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa01790d44f4c8257efba4a11b5255448c0c6101277d49cde545063cba6e308. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FR9W12538817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d437a7a31c699121b6656eaf2e440da28e1798d33bb95f4482707ab9a5847d. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:30:29Z), 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/FR9W12538818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc99ea6c7f890f65541ec8e2a3097d545a1cebbe6bed4e880630d923577cec266. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/FR9W12538819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34fc43019bd14b12662801c6bc82d6bc23ddffbc2535e3beb52f12f97aec9f7d. 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/FRR642201708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da4167dd7e8f4c84624fd7ab0be63e98990d8e7664e555c3999cf22e0c58d34. 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/FR9W12362805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da4167dd7e8f4c84624fd7ab0be63e98990d8e7664e555c3999cf22e0c58d34. 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/FR9W12362805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40bd4a6236e0722cdcf4f8f02b0fbb78f9c0e8713fe2e73fdd7a7b787bda49b6. 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/FR9W12215742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40bd4a6236e0722cdcf4f8f02b0fbb78f9c0e8713fe2e73fdd7a7b787bda49b6. 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/FR9W12215742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff01659ba7ba0449b0e13391916efaf2b3a583ba4709eaff09c562d18763cf2. 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/QZTBC2327752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8299f9712919e5ac656a40e46e4181d476c15f571d2d4558b77cb0667491d633. 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/FR9W12354264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea4806008a51d43ebd588e0c9ea336951c927a154ab7e49887cce775ad3ecd45. 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/QZNWT2319494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7430f40af75b0b1607ee20d95a65293ee6879b6c30681e6b9265443ff84188ce. 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/QZK6P2146162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2f68259aa3d6f374a9671d49e4cabd328b85029c3a70e27fc264a6a527298fb. 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/QZHN52288822.