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 0xfaa4d17d1809d37172df37d32a136cb958153a08d89dccafb27a21e88d3703d9. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/56f0e093-596e-4d60-a874-dc045d7f7f89.json and https://artists.proofprofile.net/proofs/artist/56f0e093-596e-4d60-a874-dc045d7f7f89.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 0xb29150d994d49370b65181f36a49b411d555eb6eca6a45e5e60cf5a3f3951b30. 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/GBKPL2290760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c82339330100ae7d766b8aa33fedded10705445925348acd88350e195eeb56. 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/GBKPL2209688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79928697428ab7d8112a0db6e7317a1d382dd78d6685fa404d4e07a68043ecd1. 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/QMFMF2201446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be471cd0d46d2fec53949fd24d16c5f3a4e0ffaa98817c7c953af24ddd6350e. 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/GBKPL2207899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x597c10dff603850e23c5a5565a99e991b8df48cf74ba37bd68c3b08ca7512d6e. 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/QM4TW2373852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fb120d073825f1c889268a45e38d2f46681c21733d8515649058cd783fa7d9d. 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/QMDA72227796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d3af56625d5d0b1f1e3de4e27c438ed61e8caae42c38f1e4a18b516e44fd981. 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/QM4TW2373853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x753753cc76a02907400bd78a6a25676fa4c128ca7eb05e8dc449449ffe962d53. 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/GBKPL2158314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa52f66b6f5ba485385b134b495a6d3c843ec2658b926334c4af13eb61d1d14. 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/GBKPL2166515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b62247692c3813683ac8c32cd42c848bc066dc319a3da9d7216c0489ba8263f. 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/GBKPL2166513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b160e17dc186497ad120a327f3e577fb75eb4279d0046b4e54a1a009b51a26. 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/GBKPL2166516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c6c4926b7d09c76f5d935ecc15e0fc58c5ac97bfcb3e559164fc2133f791179. 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/GBKPL2006467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eb14daf6b4a5af2304324773a0e0ec87cc814cf8032f2155898e5411b04648e. 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/GBKPL2163191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c8f0792a3eb5e349c750424fa12d11eb99b1fa1447535d16562f30060fd3da. 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/GBKPL2166514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe094abc8d0747c234c256f3f74b56b49c8df26ed8738e33ebde1816916a8bf58. 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/QM4TW2415844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fa166febd35a104739b0b97af6d8845be2cd8128221c95b5f2e6e045ddab721. 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/QM7282324038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69a063c5b000109afbfd8a6395dad3f62fb2ccdbbe551edccf323787ba18ae8f. 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/QM4TW2498204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0377ebf8659f40232c205e798e8ba5198076dce392b9c41000c415aa94a4f4b4. 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/QM4TW2498205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fa166febd35a104739b0b97af6d8845be2cd8128221c95b5f2e6e045ddab721. 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/QM7282324038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79928697428ab7d8112a0db6e7317a1d382dd78d6685fa404d4e07a68043ecd1. 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/QMFMF2201446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fb120d073825f1c889268a45e38d2f46681c21733d8515649058cd783fa7d9d. 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/QMDA72227796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c82339330100ae7d766b8aa33fedded10705445925348acd88350e195eeb56. 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/GBKPL2209688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb29150d994d49370b65181f36a49b411d555eb6eca6a45e5e60cf5a3f3951b30. 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/GBKPL2290760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb03cab7728d24c38d50aae2e82913b68e62780f7a1d00c1d327f864fdc8285. 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/GBKPL2284523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eb14daf6b4a5af2304324773a0e0ec87cc814cf8032f2155898e5411b04648e. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBKPL2163191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x753753cc76a02907400bd78a6a25676fa4c128ca7eb05e8dc449449ffe962d53. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/GBKPL2158314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7abf3dfa07078e9a8f8284f197cfd9792fa9b976b4b2f946207449e0f3609077. 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/GBKPL1935754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f5091af5db37e2f3f6a1552cdcb78c0b08a3670fc65cd9ed7ec18ce427a3442. 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/GBKPL2141616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6183b02fba16f87c5de4261accf3e455552a8b94e447113f0cf83f55f050d95d. 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/GBKPL2137643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c6c4926b7d09c76f5d935ecc15e0fc58c5ac97bfcb3e559164fc2133f791179. 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/GBKPL2006467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6681e053e2f4ce277af0f4bba2aa69fe8c2687c4dba5910f595bcb29f3f1feb5. 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/GBKPL2096877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d9a981e410800e2925ad8df9518a3d2c6a329f310ed6eafe247b95d4b1b7694. 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/GBKPL2082864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9982429b450453cae5f74d305e4aa1edf722a6edd59c148feeba8cab58ed8125. 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/GBKPL1959987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x379baeddb0ace01bc5c6db67d9ddeb3d4a3aea44345e0d82ec6100c77fe841a5. 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/GBKPL1951178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba8288e29410d66eaad22f84f39741085f7c06c0f92eaea65eecb91106361d2. 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/GBKPL1944412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa325d1e0b00960b1cbf31ad20433e971f66ac164342dff7d1cc2d6bb342345ba. 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/GBKPL1826078.