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 0xa587110bb5d5e2865f3102fecfd82c1370e4767a4d5d8d1391deb977c767ec91. 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/c6a912a3-b5da-4863-aaac-76b04f67febe.json and https://artists.proofprofile.net/proofs/artist/c6a912a3-b5da-4863-aaac-76b04f67febe.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 0xac594125e2c49b4bc29334427abeabb487fb851065ccae1c881d2604e3466902. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZDA81802060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0182364f6adb056b90892e1e018c80c56e24c84e13f64ff754553f985560512. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QZK6Q1959247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c0b8d90a1ddbe7d08e0e5d9475b10e6be08111d40d23c5835c139198a9f9284. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZDA81802059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x135fcab3140915210e20bf67c9ad9311edb8dd9135518644a6a7ffeb4219fc87. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZDA81802117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00090371694c61293f11613e79ad795f490b7933749295ec2bdc0209e3330ea0. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/QZDA81801994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dec158320a2cbfbd4cd86bbe9f0b642504e4d07a2192e2e2f4f28bfa50c91e6. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZDA81802191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4446c17f90d3d84fe991ce83500735c77d61e1be8a62036c7add3b7336fb1be. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBSMU4269547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x403e517a3b163db6e9d28d8949fd9e9511622a878a601a65b66450609b474c0d. 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/QZDA71817731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5495cf1ecf13b990f40b3e8ec2c3222aea017d7f746a39dc6a8403722c05e1b1. 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/QZDA81807821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3d0a90437e788481c9a6c27c2f9a341a648df949baa2187d4c4cde284425a91. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZARB1885307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b5eec62bd49d28fb14069257052ef50a361b901ec36a121e759351b39fceafd. 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/QZ4JJ1978712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf2828c5734073a156d6277a5c0adca772ec7c6a156ae52f83937db7c1c67e82. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/QZES71964180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5215df2fdda5c67c67f964628fc7ed9999af2669b5ffa4b477678eeba8a42988. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/QZHN91949550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf075a412cbe6ee3d657ade22bbce0fcebe7c11385407a58415920b680844901. 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/QZFYX2030704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07f41a0db515c2aea7bc1b407e98aa709544372cb7cd56a90818c82e5b718a7e. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZFYZ2014881.
Rain (Deep Space Robots Dark Matter Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eacb633a3c37fe693e10ca113db340065a6a685819a924c8d89c814c2f463a5. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZK6F2017202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x593f68b100147e24c4afda31a663bee2cc7dfd9550ed17b0173c0cdd2362fa60. 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/QZES82100584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb34504239270e04d9eb125e3229a72768d0040597bc8a181443594ed3cb48a8. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTAS2179463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3501f11efb3c2c7c4d2f17cd2a862793ea702a26c1463b6468a812b9e3d8ba75. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZFZ22249582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74bf749aa66d16ea3f1b9cc91a05c31bd149dc976101c335315786fe5a36536d. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/QZHN92244701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf80e44f9c30a145eca28f4847ee0de1f0e02e4dbf7a3e4f8745fbfe162feeb1e. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/QZK6J2275254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc98f8a3d0d7c1c1684f4d9ce542ad3bac93c02ec55194f32a2a0c97347dc83f7. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/QZNWZ2268111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f08d13c1f5df4c516a139ce883c9de19d9ac4fb32f6b8e543029d7fa8a67a0. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZHN82307442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x042285e67bdcb03dcebc5cda7827db4fd3666cd81a7eea3c503ada5ccd02af13. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T20:44:14Z), 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/QZTB42394311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b811556f65a8121c520ba6795874378faea666afe09bdc0a72f2111e63515a. 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/QZK6K2404852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd11ab51942507c923b905566e3e2a4174f28a079e1feb1661ebedb4482f0d4b2. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/QZPLS2440271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x935cd9ec08b37ebabf2830192b9eb620aae759cea3d16d6e3b19a1b5a661d0ff. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T05:30:12Z), 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/QZZ7M2558744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x727b61c40ae414d63d791331287af63578b898703356b262af58167d5c0f7425. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZZ7M2558745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57854299ba93c45a6b7662b9c7e70adf543a73a1383b7081107753aacc7e2363. 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/QZZ7M2558746.