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 0xbb1f8f23f20466a4a0a7897a59f6d0d14e585293633a018c81a183fe436c1b15. 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/54e21dba-bf70-4c60-ae24-d38ee6285877.json and https://artists.proofprofile.net/proofs/artist/54e21dba-bf70-4c60-ae24-d38ee6285877.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 0x07e4be1a69fc9c42e6f9976e1cfe75ad61c4607bca0683b0b09ec6a6723e99f6. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/HUA611700229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x419cedb340a8b47568563ecff061ff8ada57506cea213a1f9102d0e8dd6d263d. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/HUA611700230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x638abae0a8fc5daf76588656ba6d06a3336c3bbddca65a59e8dd7d31589dac94. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/HUA611700232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c5d37b9f9912c21eb939db8d3ca3f253a479c269b4104ba2b685c3931141f3a. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/HUA611700233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce2b8ecb9268c10000d0528076613ece1398e6ab126613e584695307795b28a3. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:09:20Z), 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/HUA611802110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad21f396420d180680a81b702bd585b374efc7d03601913fa42bc176ec0e04b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/HUA611802123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf2272a42aeb4b79030a70a9a80a5556fb5f46508dd82095c6f1a1cc7baa5fb3. Chain 2 (Bitcoin): anchored in block 958143 (2026-07-15T10:15:04Z), 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/HUA611802124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x588e73b4c6a43cc836d8783634066035af680971de7dafb72ba92e93acbeb439. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:17:09Z), 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/HUA611802126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ed9b91df06d68e08652dc8dc9025c7c3a824c5eaa53a7362e88b7b54b2ca68. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/HUA612000327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1571594f2b92c869039ec56f7ecf97fb8ea8c3a017495930d06556fbf3e7ee8. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/HUA612000328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd92ee3fd36faa48b41240213e10ea4a8609056225982c1969d1e4018e7430b4. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/HUA612000335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d6eed248f1d3f880a1a467b24f9a90ee64356dd195280b140a992f9f4646b1a. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/HUA612101093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72e0e079fd1b2c7c6abcc409f25789b5b85c00c6fe45d3050c249c9d9d9fc7a9. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T17:28:49Z), 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/HUA612200941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfda20c91be905d6a354a3e583b5cf461621a3ed93493f772f22e03a2eb5d91c0. 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/HUA612300306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46fbed67e3abd8ff987b4b234985a23a9678e4cdebe2905e7be30f08391ebc9d. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/HUA612300376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f4576e22e5adf6fd9f15de497bc031b405a40f1b6d714ac57080278bfa3a6e5. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/HUA612402370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e9436ab9ab8efc5b7156b2fe76cc3da911e0166f65bceb9313e5dc4585052ae. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/HUA612502471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeebd6379036e4da9bc6a155bd79e35b82ccab14a067e3de30b3405934ff2a619. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/HUA612502490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d34d538e86bda21361cb5509b102bd165c070f2a8a8e44609411a85cddc847b. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/HUA612502491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66f73d1fcb4ce1fa99f60c7624bf636b6e560551808d45db6f80868649ba759f. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/HUA612502492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5aef2a4dc6c2eade137e8fcffda47bd6f1030d0d95ac1f9f6e9298ceee10f7a. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/HUA612502500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe509ce6be912379112521ad827da4df67e71c473d959bfb145d7f9fcae6a39a6. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/HUA612502503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f7b7edea8d4ce483f0e476e0ef450abc181e010af2e298b9ebc2a82b2565f32. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:29:56Z), 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/HUA612502504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8dd7550c4360bc71355303789f6982cccce9717d4482cb5af7a9a078d923e21. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T05:50:56Z), 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/HUA612503496.