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 0x75a1ade4ce74c84f394710a8cd7b456722945cecc049b0dd0e2c0aaa1b5f2d7b. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/07613dd4-4f79-4bb2-91e2-9f795798e6b1.json and https://artists.proofprofile.net/proofs/artist/07613dd4-4f79-4bb2-91e2-9f795798e6b1.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 0x499f473e8c56dc8eab5d1a77a001c9b1b69cb41790ff3a8db35d8402fbd03e83. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZTB42230830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc375a0f7be11b10b53fc6f61042eac49e642d1ec174bf55a49920eee21f03b2b. 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/QZTB32275848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b0f07bc9469d9bc8b8dd582da12fb9433605930d4718c3fb8c65b2046cea96. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZTB42232057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f1a9b56b1ccbdd3ed156b171fff63a2c87a67e77aa9aac26fc492bfea27785c. 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/QZTB42278061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a82a4b528119e5f18df1b445f0e58c517b29dc7463f648ab9e5edb094d200ee. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZTB42278059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3129fd15b4758ad5841dfb862cd9d6fac2ec5d7c5783349be1e1d6bf8a88c754. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZTB42277451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a2b8128399d3e47455c503c52263199604ed3892a40dcc95e4b188ce3d2254f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZTB52205048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7285f4809d8c7a84c3cac77e44aa8cf0316441351a06d6cb3ee382184c4d664. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QZTB52205074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a88646e3aa8345a2c496bc75ece4365294a2e2224edfc06abee245cf33f3b54. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:25:09Z), 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/QZTB62237579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6b2657b7c0a27a96bde2c24de2b92f6318264a1d7dab078f5169e4c363ba1c9. 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/QZHN42358408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacaa37a25f820e2ba55bf1aacf6a1a9ea8568b5845e973dbcf877dd32d27dc16. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZHNC2397286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92d468175d7cbf3123b981928c82f21f89ec5896aa761190af6a62a35fd6dee9. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZK6M2306788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa9ab16071c97a2ce5f0f1b1528b14e6711be3f912a1950d2fe2857b03756119. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZK6L2340697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68106ed9015cb357555eb01fa31c0b02b11907e36c276a5798427c1dd1edd736. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZK6L2340698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e68b16acfad393ee0a5b7c20ff9e2b3cb078abc11f97b97e765e448ddcb8764. 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/QZK6L2340699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcceaf5429798239506b77920731cc673cc105060e02b8b8fa975728bf620a0ea. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:55:49Z), 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/QZK6L2340700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d59ed724b781d30c35951ae5b6ee7ece9e89b8ae519127e4178d34df686b26. 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/QZK6L2340701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9190aa1ea6b9b2cc221e1302c3724fb0e564b1261f60487d38881e88fd591d65. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:38:15Z), 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/QZTAU2343018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db046de395dd781b4cdc8743050d4a85d6ea14fe18896cc29babfe50f26ca1a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZTAU2344366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x863d251901e9649c9ca8d9d0a6e3133aa1106448c55630a0ddbbf59170f132d6. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/QZTAU2344377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c87e813696df24e5fdde675071d322b02ccb26df949054f2a868d9fcbeebe1c. 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/QZTAY2359670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc00dc421bd6d6b53631c10909860dfc555a28f19307775ee03588cd4b8df42f2. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZTAY2370394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3506196c19c410dea065ffd7490f885032ed98090416906fbfae61a089c21a8. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZTAU2344364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9eaad9083a63ad60ae52b12bc8b40371a53286cfdbfb39b477fb194b1c417c7. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/QZTB72359158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42124a1d3939361e2dc54f003cbc3e51ea8173a698c9a21ee01ea59d8bc24205. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZWFM2314197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64026c0fb5d1b62d6fb6ff0641d05fff4f6862a9a08a70b00bc45552d94a42f2. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZWFN2391753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d5797753f0285820d7bf6f9732216e7ddfa427d94dae81d1e07e471058804d0. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/QZWFN2390024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59db770baefce4960bc17805e191285df608d887bb86fd0af847a78a763e631e. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QZWFN2391750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7e5fcb2decb93ca9b3ba73f574d23d37709f41d36cd0ec379e697ad6158b85a. 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/QZDA72400149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb1c744e31bf17818dc7eb915d9e5d82c2b99a6a0df76cb17f4510eec685dbe. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/QZES82498459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x575b2f0ac4b92bd4bf29bffc5cd6effaa6bbbb7ac31e7bc27482ccbb4ed6f837. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QZHN32431548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f2ea72a593a8f795922e507f519ec982901f027a825b2eb2a682c0b2e20991. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZK6F2436592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc68e17a2c8076948eae46f36a3cc3000edb08982ae9d5c41f464851c4dbfc91. 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/QZNWQ2446380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65d8bfaeb2ab1341618eda34823f35492ac281f83f61ea5466cbb2559ca6ad0b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZNWQ2460479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88882636c008ec6f34c4158d4f04b6d30d4e6406270f636441c3376765ff5725. 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/QZNWQ2463424.