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 0x1e35788096d85f8d645bc3fa1f2744dec64b2d6fcd8ec322b7ce7fb5d6e1bc34. 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/37d019c1-5461-456f-ab20-f9269e5ce4e4.json and https://artists.proofprofile.net/proofs/artist/37d019c1-5461-456f-ab20-f9269e5ce4e4.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 0xc9742a33e311d97438e7b8ae9b8663e3aba45afb399c6d8ea8922518a480102e. Chain 2 (Bitcoin): anchored in block 958678 (2026-07-19T05:59:57Z), 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/IT6OS1700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a312e86a063b6da9b8a5b58b7f5482a8747ce3bc0f218d7676227849f5584d. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/IT6OS1700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf37f4fb39f92ee99b0713f2bae24539b5514031ef51b56948fb56b813bf9ec34. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/IT6OS1600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9232a2035f2cebb2a00b30122441fa9afda5d11fe61f18c57da1ccfc0287f678. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/IT6OS1700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x673acf1ee4edaad8c49d2d53c0d09ac86c918233626e1b0348b1ed83c17d1ffa. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:49:49Z), 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/IT6OS1600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x330da371020d39f521ecfe74ff744087b4f2ba05d4367f00abcf411a87867c49. 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/IT6OS1700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd7f8a14fe272814461682e7d8277ba8c076b78c3de02536dbd05eb67d2e1d18. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/IT6OS1700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a5dd585e7cdae43bc6e22460ccb6e108d287979aca282cbc3dc92c6dbc1d713. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/IT6OS1900021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x943cd5de272dc23b6f1342d88b325fbaa2c2a5ee773e93ac0fdd6c0fec5cd09e. 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/IT7LD2402626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3db443dd411a7147c2c7df58d02226bfb27a1266ed1d2f4df09899987302045. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:50:04Z), 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/IT7LD2403200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3879d022afac5a5ef4f1345053311436f8a63f85eaa4fd0656ffb929c669fd7. 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/IT7LD2403202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59820acb0e982afe16f48bbcd333f498d872c93620895347d337618f8116908e. 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/IT7LD2403203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x943cd5de272dc23b6f1342d88b325fbaa2c2a5ee773e93ac0fdd6c0fec5cd09e. 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/IT7LD2402626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa43d203ddf2aac8103af520c47e3f78f091a770ad0c5de6c4113f881a56d290. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/IT7LD2403204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44eaaf3858e83ffbecd97d29f3699770280fb6f6d782aeabb101d787f651cc89. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/IT7LD2403205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2d83b41789b8adf208c42390931922a5f0f6a4616538b0b5c0925af2b8b7c2c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/IT7LD2403207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91aff064441128120d6fcf676e215929b340c31401c9ee5959248e29214111ab. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/IT7LD2403208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02308549e05be86f5b8a04e0e1b84abfbeaed644c3ddaa33612c0df63a96df93. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:52:50Z), 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/IT7LD2403209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29606f374a580ed78e9595a0491248cb087d3b7a20dc1e14bcd7f8cab8731a47. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/IT7LD2403210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a29e81a430687ac5871092222616f032b392eda71908c934d38aa215264448. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/IT7LD2403212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b6abf49f4292f9ac926106d94578098f89efa6fdc6b953496a7b268c4b2baa. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/IT7LD2403213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb8a3cc444db1c5c61a83aec01e5ea0f476557d69d58d99647a4a8d9ca07fa0. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:53:51Z), 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/IT7LD2403214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x943cd5de272dc23b6f1342d88b325fbaa2c2a5ee773e93ac0fdd6c0fec5cd09e. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/IT7LD2402626.