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 0x45729b709a7fa9d3516ff65c340d0a89b1a022b3c22d890a0fea79a07c312e22. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c4715bfa-b350-4bdd-8cfa-e7b02cb2995d.json and https://artists.proofprofile.net/proofs/artist/c4715bfa-b350-4bdd-8cfa-e7b02cb2995d.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 0xc8eb7cd5ca66b6235ad3c6699a4898779b8d9cc9e6a706f6b20e8499446f5566. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/TCACH1559151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94622e92075d04a7ae3ac2f8c049321a3f1fee2f949ecaf14d4a4dd6b20f3385. 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/TCACH1559157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x634b2ab3762cf1470dfe68edf236c1720393672ce2b7f513fe819eccdb5f1421. 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/TCACH1559165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272e96494b8cb89d52fc6f6bd9356054704241961547712939b00424f8b6c767. 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/TCACH1559166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7f82de8dc695848ca51d909f4f4017326e57a8733e3718143410f561f75236e. 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/TCACH1559167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b5bc90407b0f78131e62c29913f82adc30f1b89c088b9a22aa3cadd8c808c87. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/TCACH1559155.
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 0xc920cbd414fb1d14919c65327c67ec1b6f5faedc02e6fadf020514fcc36b8699. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/TCACH1559150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x182a2922a6f67f2c7d943e522f04a7ec632b2f951d3134710722391faaf8b34b. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/TCACH1559152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e38fe015274052678837bad3772fb31fc4dc23417fab296690bf61a0bee813. 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/TCACH1559153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ee51b0f1fdd89052cc4f241f85aaa37d576b0be547bf2a4a8504227e70c8b6. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/TCACH1559154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b2a6aa3c7417b634b1285a9a63122ba4340c75f3738467f620bf0b4b0a7b06. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/TCACH1559156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc1a9d5259eef6f6b2a902a08ca2abcc9555e603bc2cf800704189f3b6e66d62. 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/TCACH1559158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b77a9a0c98afd9ccd415ad34e871d58528d09733d33ba44889d52a03b860623. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/TCACH1559159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb73c90f713890315ab6ac692f31590fe88e228db16cf8dd6706444900e10531a. 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/TCACH1559160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d1d292e9e00009532edd4caea1b38027db2b3e5d75e5bea7c4ef0339115ff8. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/TCACH1559161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x234e1d77b061a6e01cfae10b385b463ccfc7744e5b8dbaea1dfbf04e923f926f. 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/TCACH1559162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8708ea6c4a73073a3360c874c3c1bd9a4883ed4ea4d04d2ca35a13be6389331. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/TCACH1559163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dd4f60d92f3f2886c57a305e07358365c6e1751dc0ead7a01003add61a44fe8. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/TCACH1559164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24282b561573a6e90b81ff29c0b905cb872eb156996e2b4df4b9e52917582edf. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/TCACH1559168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0520ffc53a5bfd72450db703410b81c72b6ab4e793ace4092dd7c4a113b5404c. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/TCACH1559169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a28db14a2038549a85e583d9ac3efd145e8b412764fffef69d0a3cdf82012aa. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/TCACH1559170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe75b0911d21f17580ed09a101357cdea950eb7ca529e1aad1e8b9058576182d7. 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/TCACR1610087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e788c77361fd174b6b64a602a7e09474bfff8ffe667063ea5d66a2331d9bd9b. 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/TCACR1610090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6282a15eeda788e4416bda57f649e02b6ca48776e4f132cf1008633fb26c03e9. 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/TCACR1610094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10da0bb58f8e6637ab961d2b0147bb1754e517bd2044302ac4980d52667e96b4. 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/TCACR1610095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0d6422c4fcf9402097fdb87f6800d0e96a074b268d14024ed894785ee7a86fd. 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/TCACR1610096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1015c89f300e04bde52d590d0b4cd5bd5c64375f00c1bffd0c76042e8f551137. 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/TCACR1610100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0da4f2e648a2f7295dbc453d31d195f02b1bd1372fc4ecb1d3aa77aea3c13726. 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/TCACR1610102.
Zadrak, Mezak y Abednego (feat. Manny Montes & Redimi2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb9797baae8b1ca63879c7230a5ecca49e6078408483fa781a34a6542d7fe79. 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/TCACR1610112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3fa25707a4b37919983a6c1c83394d0e519be9e25d276bb9b08887ab84ff71e. 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/TCACR1610125.