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 0x00b0abca2f930eff4d3965519fa9d731874e7e68fb9b550bfeac32f8ec70ce10. 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/b3d16663-9a29-46f2-89cc-b1adb6067604.json and https://artists.proofprofile.net/proofs/artist/b3d16663-9a29-46f2-89cc-b1adb6067604.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 0x19a9b9014f92bd2709e8c92b146ee3f28c283ffcbc0f508376866e6e8a33e104. 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/AUVTM1900015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0522e42660c040c317cb7ba41a0ce5016ff8e85fddc4e176fe8080421cfa2ef7. 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/AUVTM1900018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee5a49266ac0fdfd6e56a9a1775fc9945bafc023c5320548dd547919816365e2. 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/AUVTM1800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e2da32355523bf05f6458827c5272bb5ab9b03c228010c4e2e53909c2882a6a. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/AUVTM1800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6d8b7a1a654f04bc7a28d3d3667d9669b08d99e237521ec2a459ebdd730578. 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/AUVTM1800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a0b9b55259eba9a28d674003ad1d524b08890a52b46cce20aa202960ef6387. 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/AUVTM1800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b0d78897eddf968f1f4e27df368f9643618f5a9b81c1e42b73756aabb776d80. 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/QZK6N2360418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9fe5b31e169eb5f194b74b7ae442c8cf7d7fa151332de49f590e6ca3b8fd5ae. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZFZ22112265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x409a60e73e56e4641b4e2858057f2097631ef2bee503b2b5904dd61e2e5b6d1e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZMEN2031711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cdd301a17dd16714e5d6ca7b48686d3a7d6fa942687256682079077fc810756. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZK6J2068440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b10e82b038658512e59a23f77f8466211dca7a794f782a944954f8aded087b9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZK6N2070653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4864c68454806e64c8c8c6e4044c7f3811c76182f01699be35ddcc81b3325c50. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZHNB2006060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8177b2466fe1bda3462efb5c6b62dd46b72cf84f85c56a430aa824e2ff08a826. 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/QM24S1914854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71464bf83ecafd6a9cbd60041427c5929953798817075465e23895ff411fd81a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QM6MZ1811270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9fe5b31e169eb5f194b74b7ae442c8cf7d7fa151332de49f590e6ca3b8fd5ae. 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/QZFZ22112265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb0cb33e83ebf15b57676302460d7178af42a218b491c4d5e2319abdb49a27bf. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZFZ52032871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10794dbcd5e8e3df1634019d5281ad2c7435e3d5deaffdbf4112fdc9a8cd546c. 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/QZFYZ2396924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3066de60e6831792754b6ca93a37f06094e030f4836ff27fc46dd16f1c047746. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZHNB2116843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b10e82b038658512e59a23f77f8466211dca7a794f782a944954f8aded087b9. 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/QZK6N2070653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4026b56afb60a6d3d8f4b1408f115c8adbc086e580d6ec6d090f2ffc51add3ab. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-21T17:29:10Z), 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/QZFZ52032873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x787b496642394bc72607717c7dc4878de8789aa45e6dc047322793127e3096dc. 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/QZFZ52032874.