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 0x7f09ffc59cf577c83f15a7e13cd64e3b8b5f265ecdcccd1e3c61219381704a96. Chain 2 (Bitcoin): anchored in block 953654 (2026-06-14T16:26:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/480a80c8-a525-4814-b875-549a3b3d6062.json and https://artists.proofprofile.net/proofs/artist/480a80c8-a525-4814-b875-549a3b3d6062.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 0x6f565fc86d563660fbec75baccaa59948564618bb524ba7ac0a20e9058772f0a. 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/SE6XX2265400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f171084c8a8b967638988f5235795ecb6906ac723081266888291ed35dcc226. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/CA5KR2123100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3310274b65fc407ef63cea851cc1bb176cb05b4d89074558fc71f2271a900082. 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/CA5KR2319615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d42cb49b298ffe73387d0de8d0c204748d75d4100fd5aafb84414afa6640fd0. 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/CA5KR2319616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ed129826878aa9eb90610f40678c3ed935bb86dc7338e46c36eae1962ad067. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/CA5KR2319618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd074b5d84aedc09a035d58ca71c04e90ba7154117e086d32929805e334c8f70d. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/CA5KR2273077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd02be9d939be5cae0b99e5bbc930fb40cdac85734dfc42d9a32234241edcb9b. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/CA5KR2160469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b75b6ac88a9a7067eb211ec60d188ea10bb63092f0885f28d98bac7ae0c51ec. 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/CA5KR2063765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa08d6dd65b34dfd8f3fcd861ed00fb0956247bfd28f69b12072c542c32662a4a. 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/CA5KR2011895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62dc57ba869f1bab998ffb3d841971099d47e85452cd9e942279854edb579427. Chain 2 (Bitcoin): anchored in block 960407 (2026-07-31T13:26:30Z), 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/CA5KR1937727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3706122f585db12eaca1f14c2d6321b898600d514fa18d91c21ca4068c20d8ba. 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/CA5KR1830447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x922f66a94cb0ff4dc7597e4d751d4fd3bf78a9f0a14ba40d1463e779c9bdd97b. 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/CA5KR2407929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6e6674ef9a441b64a2f5b0fcc032a51d8263ae7591d2468b069328d7e6b332. 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/CA5KR2407935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82e8b2f32a1098eb1e300ebf8b7bcf4de2286567d2f1c4294ff8100e14e44521. 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/CA5KR2407936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe63abe18b1560eaa53a70a169c3f90b2ac273b1fe58474f8bf7d55871b0987b. 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/CA5KR2407938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x788d7fc7cd867b710d24ba40530ba6587cca636c18b8976f1d824d06de121a8e. 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/CA5KR2407939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeefbb38ec91087a544bb4ee8667f15cfbb14e8c8ea13eea13bac09ec6afda03a. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/CA5KR2407940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f55ddfa7598539e813c5f709cf978ba98fa0c01e3842331c340309e8d864d54. 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/CA5KR2407949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc21da03169794315cd03d3c982e9d9f974b56b21e5d122e7133fc4568451be0d. 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/CA5KR2069746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad58eb7521b3cc59f3e3b9f1ea9551c8396e6f027ce3d5d4fb0880592a4f3d9c. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/CA5KR2069751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa1bab4ea328218202f897ed399bbf60cc9c2fe49721d54f2edab297d9b845cb. 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/CA5KR2069757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34418bf552912d3fb423c30cadfb24def5b76da13cc50215b7fee0a282c97404. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/CA5KR2069759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6cf1c49a0bdce09ebacec313e94ee1d4b283e3b7e2f260a19e62e251957cc9a. 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/CA5KR2134857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfaba5c4aa99a28b0e4ee316e612b286a42a32b38b5d57a13452f230d5ff19d9. 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/CA5KR2134858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19d80d7939eb00eb4768eb4bebebb61045157318f4928166c1f925c2fa30683a. 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/CA5KR2134859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6dbbe1874e8850034f88f392bbed3989f2c45d7ce18c9a047689d7e26b3df6a. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/CA5KR2134860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x396c70918559f60c14826c24c68ccd188ef4f6a5e4c6112dc01befa5a342885e. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/CA5KR2134861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d327fc6044a2a36580a65ef831de9affda4bb83b8202a3be231e142ac55edb0. 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/CA5KR2145933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd97be1c286645ff6ae2ce1eb0eb6920e56d109703cd8ea28dcdad8e9a6297681. Chain 2 (Bitcoin): anchored in block 957057 (2026-07-07T15:21:38Z), 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/CA5KR2145934.
Thong song - Bretho Rodriguez & David Figueira Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af1915344db00ea1c929e3b76f2315b4a7b42ebf957fe9f8591f78a26c20db8. 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/CA5KR2145935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a9b6e0f2b8f816af2901df874b39ab580ca43fb2231dcecb303eecd2a48281. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/CA5KR2439881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad8b90e07468790e3fae42309fbf279a67738e8e8464e12e393951205c6c73e. 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/CA5KR2309940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d262fb33e14c2028bed7e31772867389ad3dc9ee2b889a43b52af86b707eac4. Chain 2 (Bitcoin): anchored in block 960407 (2026-07-31T13:26:30Z), 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/CA5KR2309941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8108d29d9369d5a917d595b38435cd75c15f5405f60713a99c9178e5fcc58446. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/CA5KR2309949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45417db24c7f166bfc99582fdbcba54326e3cc9080b4301c5f75b4437cd29556. 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/CA5KR2172743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45dda23010e3573dd9b5319385720a1f3d8d2e40af3ae1b83d52a059d9de0745. 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/CA5KR2202202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe15ef6b2cdfaf16c45dd35b0c0f44cd7ad8edf612827a08456c7c92d6d46fda0. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/CA5KR2455626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1691320976cf5b7fc176a54321473a7068f188e113bd1e1e49ca36bff0ba94f4. Chain 2 (Bitcoin): anchored in block 960306 (2026-07-30T20:23:53Z), 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/QZG2X2417397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e13bb82f9634a5fd1ab18e8567fca80bc52bffda36aef77bfdc03afd824678. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/QZG2X2407138.