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 0x9e4ebf8bc405fc96f54169767568bb7af2ec35ba55bc42fa0c3b9aeb6f34a396. 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/53269e56-1a6d-4ba8-8244-d22b08c3d2ba.json and https://artists.proofprofile.net/proofs/artist/53269e56-1a6d-4ba8-8244-d22b08c3d2ba.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 0x4c5cdc6cdfdbd96bd555002d9c1f8bb9e62b4641fd008bc37ea3425e23131761. 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/QMREU2101509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1f5bd18c2056828ab8bd3bc8b51d9e9cdbee74940145eaefeb7baee04c21c0. 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/QMREU2101479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa932ca8ce5f86718b836e4ab132efc4c2f841e542f00393401db33a8918ca680. 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/QMREU2101497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f82cb886624a58ec2c5595e21d9bf969ed8c4987c7d004bfec81711f3a66f3. 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/QMREU2101506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb50db286e0fd67135cf63ec782569e3ec5636edd6039f8792ef4fd36bdbd6a50. 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/QMREU2101491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa47679c594b4eaa34fb080e7cb662114e83c9903defaaa73002376770f6cceb7. 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/QMREU2101476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x981b2f8cf9a5f4e70feda5b87303b5f8519fe5bd141a71c4ee73deddadbca51f. 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/QMREU2101488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eaad201e345cdbc145b535743a9602b9f7f117b1fbd4ba081ab47400f8acfa0. 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/QMREU2101482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0983ca24379d6ae032ba03c94ab0c3659959fc08da424c52370264d6715d39d5. 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/QMREU2101494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b5f2c6c0df42a58ece7f44d98e19f33597fa627bc2dbd0514f1282a0185e856. 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/QMREU2101500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4cdebf50ace6fb79268008d2293ecdf31d6295bf00a9eef427077a072afd078. 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/QMREU2101503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba951cba8f486ac361053ce9ac1793b893af267c9dd9f405103f2a634079eafb. 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/QZS7J2339420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad861cf2efd3381bf81a599262c73f9cc2716348d260f717b8de4b8e1db504c0. 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/QZS7J2278954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b0ced0923a1cb878c066faabeb97046da6397275002af96f15f1c620d11ed1. 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/QZQAY2417673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd9efc53d7ef6ece218a1ef57f7b203f3fbe1316d55433b67e97c59a86524e6b. 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/QZQAY2462150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe71df52e7bb5e2199e1b1f17e4eaebf5faf6810d75c35647a9b152f06ee3d329. 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/QZS7J2380897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a27e2b9f27a486cb31ae93f127c1a7a3cf9da27e5e8453b53f7e4ae5db8d50d. 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/QZS7J2357720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23372110701fcb6708816eb0d605e64e729e12ce81b5032c4ae941f55eb58483. 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/QZS7J2302588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a27e2b9f27a486cb31ae93f127c1a7a3cf9da27e5e8453b53f7e4ae5db8d50d. 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/QZS7J2357720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd87668658a83798c90ca139147a1509464a38e352c3baf190c8e4d59f5c642d0. 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/GBWUL2317413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf61458544f3635a85012af9bacdfa8691df41f0f01dc073838aaad58cc2956f7. 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/QZSYP2300844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd5dbc3c1fd9a5023a3a3957c3301e38455ac664e3f55ca7d3a19309eded94d. 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/USACX2200638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39645f561d22769a8ba73c737151347340c90d26f04e99dc31d226d92d90b894. 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/QZS7J2221607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609380e41197d3e482ff6eb1bb0325670265350c52520309ba69aeab57a0ec65. 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/QZTLA2239473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b52488489e1bbbab1a122ed369f6726705adf6ecbdb1ad59511b364d697a9cf. 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/QZSYP2160038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd544d4cbfc6d0fc77e0188fe55cac27692c3697a03a1e3c0bd3913f437b13b40. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/QZS7J2125972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd8462641e4688f7ecec4c6f34ced6c90cd23d9895eb6bda4a8f134f07ee2e8. 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/QZHN72143051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x252a2324e58997b1186bbdf77066eecd4cfa44fc903826c809efad62550dc2c5. 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/USUYG1361326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b2ed496002809bcf38ee973a544e78f732bb048225e4ceef3f070bb7bdcc89b. 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/USUYG1352592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dcd5cb5de20e36756e6559980a9325a99d281245f70695fd09f1c0060e5c5eb. 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/USUYG1350938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764daf6301deb6aab900abb80602a56754e64daaf06d7812fd84e3117af43c48. 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/USUYG1336202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc2ee04b68ad091b6e07b7b31ae5bd500de10daa7b04d02f1df64c0c35bc5b9. 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/USUYG1329053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c228f4cdab9ce5250debe69ccc9510f0d24c743334cf81cad8a00de3b2449c. 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/USUYG1320705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd505c61bf359fe0ca6027b9df323d12dbb6d378205caee8bf92d1bf8361fa4. 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/TCAEE1989880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bf47f65f802eb6229faffca48df97efbbb7c04b53dd046b586cb2278cbb380f. 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/TCAEF1960120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a36a0e99b92fe8a11f87ef853abb1e55e7f55e7963a6ee8729e823c1b5c018b. 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/TCAEK1916355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaba7ca21d23b7a7ceb2da9304297920fe4563c5e13d15ec6cb8cd02c9a632e5. 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/TCAES2069506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f438e7f25658c2c8356b8b50d3eebcefe6a68f7cd33c7daefc7a30564827942. 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/TCAEF1960198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae9bae3962f55d47b07b81cd6714a2ad9ffec7ad62d0f7494459e94dd7e95900. 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/TCAEX2066049.