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 0x5a5c95e61324e409982176841a8896d2ea1e7960ccf0df12ffcb702c91a1148d. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e94ab2ee-7abf-4a5c-a213-7ab5f2ccf47a.json and https://artists.proofprofile.net/proofs/artist/e94ab2ee-7abf-4a5c-a213-7ab5f2ccf47a.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 0x52ccd81bc1a57760bbe928d00354fa6cfae03c648e4af195e766f8a70dbc4e45. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/RUA1H1785276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8538a12d68f5bf87a84a3dda193e4d311aa079c136b01effb8eb4c3dfd3dfec0. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:39:31Z), 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/TCAEP2099725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89922d8092a360a8da0e7fc9cc4982888981bb0095496b2e0f8dfd0b4aee7d3c. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/TCAER2041677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d44bf494de933120aa91cf1c2c9c708246696541754ee44a23db40644bf9238. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:07:49Z), 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/TCAFF2028395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1dbf118cc75e40d59a1692bbc5882c19a12a00853605961b616025aaa9e749. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/TCAFF2032711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b0783cfa1200703a0b3044d945759f541f84ec47fdf9d20b0955ff9239e0780. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:42:04Z), 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/TCAFF2032674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x425ad41ef0c9a02256a1d66d3362e03a5852babf16fdbf494139b3333dc6fea2. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T03:00:48Z), 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/TCAFF2032719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd81c0e134e3c823f9ba754fafdaa20f3e2c6f6159b983cfc8d2119af08e85a. 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/TCAFH2061515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc925cc10d533b2a2f995e940bbe35d9b169f6321850353856e65a31fa3af7bdb. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T06:46:32Z), 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/TCAFF2028668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ceba800359c968e32ec1c92ff58cae568ea46256f9071acab8db44306a948b1. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCAGG2294171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e8ac3ba3a2208e8f3e266f7e31a45431def0d2b0d07398e72582b909ae690d. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:55:10Z), 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/TCAGM2282358.
Llego El Rey Tu Papá Esta De Vuelta (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6bbd91418519a95064512f23a367a2ea7a1022ca2603c84edb83603997a26a3. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T09:09:07Z), 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/TCAGD2249812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8740a771d8f534eb96e959f5bcea59015bd673c4aced72cfb43328f2c1925eee. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/TCAGD2249803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc930ffc31d1b59a0759dd3eed8f89e74af5ee108a019d8fbc32744345ec571f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCAGD2249825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5300929ef7436976ef5eeb069b36cc314934758ea13b4334934e4d6f457373bd. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:20:12Z), 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/TCAGY2370359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2aa4c85f2e4c2c8e35132e075b1e1906d4e9e059c70bc7ac4165f62c37bd859. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCAGW2341820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bf383b6f61889b40368acfeee0c90bb4fcf76941b95c41e6873da868723fefd. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/TCAGZ2335334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c4306fa9575bbb91b87da49dcf88bb09239c54a67e5bd38de741b631147e346. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCAGQ2209842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe19f79055de4507ac11a9f3027f981f8edcfb6c515e74ca1bffb4e2ebe1b2329. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/TCAGM2265699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37eb4af773282b7b6ce8e533be5901574b7f34965ffe7e21f3d2225ec0cf9964. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T05:19:41Z), 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/TCAGS2215933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20d0b07b3903c846d85f1c1a4b3260ba18f38b4ea49e0fca67e9702bc9ad2f3b. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:01:39Z), 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/TCAHF2328153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c4bc3322d46b5313faa6c29f69fc4eccfb428399d2bb969dd7c8341aea21795. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T08:26:38Z), 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/TCAHY2479755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e576b2646da57fb05f1630eb7bdc103905a7f9a6a85d5e5a1da2210d79d7268. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/AEA2W2455450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x883d934784a88f4874089447d5259250fd94a2f52debe72d8db82e3f833e8614. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/AEA2W2455452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82a9ea597515f7d272934ef2216347f13a91c49f84f5b1686c6ea65088609765. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/AEA2W2455454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe959437ebfa6f31a6023be63ecbfad3389e66dec0ecd6ec0b32bf8ccf150b18d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/AEA2W2455455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fc1bb220adc7cdd56ea7d8b3bf7ef8dfdcb9a847bde159e30f2d96b3b6dfb94. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:04:05Z), 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/AEA2W2455456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a392bd8970b1f1b0dd1d0950e9c16d4209dc5a6b98c9bf5c4e1fab9fb7d7a83. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/AEA2W2455457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e64a1aa9d61f662dcf939da21260300ea5787ba5ee7ff9798bf22a9382cdd96. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/TCAHE2342052.