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 0xc9c066676d4ba2195c9b4f25dfac9a4fac77fed4a4d3d8c1062c7fb3a75fc8f8. 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/12168b18-8f8f-4a2b-8f21-195c008acc55.json and https://artists.proofprofile.net/proofs/artist/12168b18-8f8f-4a2b-8f21-195c008acc55.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 0xcb25843b8c1f50a45e8b4b485c7eb57dbd0062b3f0a3af0c8eef069175d1ed61. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/DEG931850966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb24aa833203366cb1c2491a6ac6274e0ab276c67270c739925d7b9813d788bb2. 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/DEG931901573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ff844dd2b8ae60331a729f8025116919cc2d1a570981d535651ee845ea481d. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/DEG931901575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8abe683d27ae02399e889ea5be893771e2798abd7c554a47652307e322233dd6. 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/GBRTB2000028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb4a2588d4ca542a16b2aefb8da1e23dc47ec36dbe10a0d3b78f022fdaa781b8. 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/GBRTB2000021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x406c7710a4630a666dbdd6401f96cd8e550ccbfe2f1ddd779d39b840167f0347. 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/GBRTB2000022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d4476e328a89d56b59a28d464d181ad7f217f9050a1cae7ba8f799d769de2b7. Chain 2 (Bitcoin): anchored in block 957012 (2026-07-07T08:27:05Z), 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/GBRTB2000023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ef967729e4b42ac383545a3acda6b1018a13c5853032b51f7b8407cb8e6a2cc. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/GBRTB2100034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81798937b69417080a77a744b7fbb9bc262db2c56b1c319cea29dbf8bf5952f2. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GBRTB2100024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f0d4cf4730bfd913915dc74f5fc8291fdc6f971e47b1342a60c3f6fa2003a4e. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/GBRTB2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed8c37910eb86f3abbb1872b7a9c6a128801446df4af9290eab7f20b277495fa. 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/GBRTB2200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ee3f686df0df9c01026effadc843f65beddc52a7bc408ac49f53d06dd33cd2. 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/GBRTB2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca73d507751a697bf2772afa33ba18e80475df2111211ee6e4540558b2af3aab. 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/GBRTB2200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a05829039c525833d31066cc0864d9dff1f204adf7e4c6aa698e249a2ed2dbe. 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/GBRTB2200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b9372e1ab061b061859881a49203bb6c643c5685f19dbc719657ab61169205d. 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/GBRTB2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x923b09fd79e07bb5ff713705dd02caa24a25d73cf4a5931d1443b90ac70a0e4f. 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/GBRTB2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba7e081ab2ba62a90d3c83bb42b6750fe132503641a4f68454c3e7657169aded. 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/GBRTB2200025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb34f68284320896759f4763b39516c3c2379c630c6d2652cab83c3c769d9c0a6. 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/GBRTB2200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed8c37910eb86f3abbb1872b7a9c6a128801446df4af9290eab7f20b277495fa. 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/GBRTB2200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ee3f686df0df9c01026effadc843f65beddc52a7bc408ac49f53d06dd33cd2. 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/GBRTB2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca73d507751a697bf2772afa33ba18e80475df2111211ee6e4540558b2af3aab. 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/GBRTB2200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a05829039c525833d31066cc0864d9dff1f204adf7e4c6aa698e249a2ed2dbe. 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/GBRTB2200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b9372e1ab061b061859881a49203bb6c643c5685f19dbc719657ab61169205d. 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/GBRTB2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x923b09fd79e07bb5ff713705dd02caa24a25d73cf4a5931d1443b90ac70a0e4f. 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/GBRTB2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb34f68284320896759f4763b39516c3c2379c630c6d2652cab83c3c769d9c0a6. 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/GBRTB2200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x339706dbda0aa5298386dbcace28ef062145056961a592bb6f3b777370f2798f. 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/GBRTB2300000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd3fd5f84f3b2ce7c68d24aeb141a2b5c26e3efec266474cc5b4b3203e918661. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/GBRTB2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b947f64ad49f72225101adb0bf34f691094702c2ed9064ddc44ce856018d90. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/DEG932404245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf46a9fa69a3448d680729ac890cc67bb66191277615faa2fea0a6a842f24ba75. 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/QM24S2300540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb959873c6500e2f36f010a89d9324d428d1d3a974f55a1dc7d5f4cdf41070901. 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/GBMVH2100750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb959873c6500e2f36f010a89d9324d428d1d3a974f55a1dc7d5f4cdf41070901. 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/GBMVH2100750.