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 0xeb186cacc2e4a4582677651267f4bdb44921c89a6307a55d8d7c269919498643. Chain 2 (Bitcoin): anchored in block 953620 (2026-06-14T09:36:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1d4ff725-e5ae-40ea-988f-94a763cbc6d8.json and https://artists.proofprofile.net/proofs/artist/1d4ff725-e5ae-40ea-988f-94a763cbc6d8.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 0x6e187df47d2421f17fdb9dbcda8db771b1bd527ce94b5bf9fb7b0040b6297767. 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/ARR6V2400048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ab743c77804f33de4d75cd723f85850afabe1f42a7041748b43846b67102e0. 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/ARR6V2400050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e2fee6694e27fb003df8497cd5a5e2c002cb8856083ced5c0f2dab4e5060b23. 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/ARR6V2400051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765a30cea05a4917b2b5dcab272c520afb1d1e86eab94a3e493b2ee177cac26d. 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/ARR6V2400052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fdb8c2f58e4a6fe4f0110c18e76f1e8000055e3f2388a19a3695eb84bd026ad. 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/ARR6V2400053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd420d3b40d2655716dc2552ed35c548480e19a97e9fca8d646d8deb8ee6446ba. 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/ARR6V2400054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8343afa93a698c72bf282c9085d8961ca9c6c109371384a533525b66a6fdec18. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ARR6V2400055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b107863463b5911abc9bb7fc6e9e9d57766adc007750483dff101473569b5f. 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/ARR6V2400056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ab743c77804f33de4d75cd723f85850afabe1f42a7041748b43846b67102e0. 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/ARR6V2400050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3907ece61f96e349094d0466b7bddd0b6675aa3d3272fc2e23fe18dc210e364. 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/QMFMG2305879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebff289dfd94e23ab91ba340ecb5e255f52caf60f690a5324abe79a4cd063a8a. 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/QMFMG2305882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8d296dc4ca291fe1db6faf73735020cd5d44ffd3158612d370c8bfb611a4292. 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/QM6N22355582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a98f11a4f6c3a014393314d9914f4f2e8f977ae8472b0da045cc3950a33f4c4. 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/QM6N22355583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05dd6af39aef9fc81edbf25309e01fe53f3463a4d91d7ce9921e1d29a7ee4dbd. 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/QM6N22355588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d0d756c123c242ed6d7b57ee8e7b00fc75706f6f4faa4f4f31b7b7a5808107c. 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/USDY42585108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7614b2baf63b878f10482630644c1bfbdd6b9615d1be2efe2bccb503f7edf86. 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/USDY42585109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6e912d915673eafba3958706e4cb8f5f895b6a0d140a9592489d958f877c27. 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/USDY42585110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0773eb4b459ce9ae7d18e3df865980cca0134563c9175a7c8842bcdb8792fa75. 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/USDY42585111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f67962359832fa9cdb1022c0b024bdbf1a8be5c3fdd2f0958632a2bf9b6d11. 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/USDY42585112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f5f1a12b60b03719febe04ac7fd1f5b2aad1491795c2056e3034ee686f45134. 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/USDY42585113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba063b62f79950bc59206edaccd48b9c5a4770ff40f5a16c9137c9906035d6ae. 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/USDY42585114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9505782da79b7007f977d2cbd36274ea88b29e22f3247978948af0bfb6fb2607. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USDY42585115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3015cd45915ea04e0871e59949447b7372c841ef3376829bffea0bf95b2b8511. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM7282532418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x389888d8649a7f8a7243faa1a06e5b8666345f6ecbc03539e345faf8bb574feb. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM7282532419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738d35802ddbb70474a862fdf85634890f1b1737568ee99a931ad79b80a71220. 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/QM7282532420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb15a3e92ed7f78995ee8453137e78c8c84d512b271fbdce79af081a0aa0ceb52. 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/QM7282532421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbecbde9a6bba3d1e3a37dc3cdfece71b3617e7da381cbdfb9476e34ab107a9de. 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/QM7282532422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x928639ca57799c23c55668e06bead434a2dcf6f243a8e6b6d97d5f858e35d8c1. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM7282532423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f5f1a12b60b03719febe04ac7fd1f5b2aad1491795c2056e3034ee686f45134. 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/USDY42585113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba063b62f79950bc59206edaccd48b9c5a4770ff40f5a16c9137c9906035d6ae. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USDY42585114.