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 0x259d9686a9ab8d89d1a413e15c4a6d3fdec889b1fa1d251823029c113acdcb7c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5c007dd7-c402-4d3a-9f86-2a26a531f9d4.json and https://artists.proofprofile.net/proofs/artist/5c007dd7-c402-4d3a-9f86-2a26a531f9d4.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 0x94771a41706c00cde25d1268cf5fcdca0cdf156a73218cac879a1bf284bd11a5. 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/QZWFP2328284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x233c35c22d775aaf08bb1f2cada674cfdb65685a23fb37fa7d86ab6f072cffce. 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/QZTAS2269437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a00baf85389a92a1654c848fc94703720f0708c14aeb60cb16a253ae25a631. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZWFP2328286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ebca8844ed7e57b5d33f2f8927ab1a2b04485aa8796f73315b1fd07754a7e6. 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/QZFZ42332752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe13eae9904bb7ce993d9d9cb23cd7d71cea2f435e751a858983fdcda708f171. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZWFP2328288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ac037fc50d9a2ef97806ca67f5fbf7fb5a7208f672f5cc7b74c76d8fe874f3. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZHNB2319984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf35daaad7c034d6bfa9dd79337ec2ff66c24f1408e5aa3e673a197b54413a06f. 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/TCACN1676227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7469aa47a6f69da797a9c4daf716c290431bb2adb73421f5cb88f77435c2bc22. 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/TCACN1676242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3114ea77bf341b6c67c09674c7f1c77951d0a3333e52d1b2441154ba355436fb. 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/TCACN1676245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb271b99ac45c0091a0d14354622ab5cd772be7b80611441e548bb800be63da7. 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/TCACN1676248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee7148b8fe3ff81ee1ffde2580f6d84521877d9963ab9becde920ce9b7cc1d20. 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/TCACN1676250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aa0abec6718e3c849594d4b8e5be2afe04300da3a52775723ab306a61839273. 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/TCACN1676252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3745d35dec68505b211a7c2b0dcdd999d5c1ea0e2b303bacd7cf3535015b5d5d. 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/TCACN1676256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c04498fe30f6fc5557d7db7f4f853c46b35fb98a29f9017ad40cbb4b779c1f1. 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/TCACN1676257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf177414e57e9856531f6467fc23660fa1c81026788c7ea9fe2d20e2db77164. 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/TCADP1820665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc648624895c4a259073c2308d59fdedec7dbfd2a9d3863a002d6b4516f4045e9. 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/TCADP1820666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9bfcc4e4f5b976d1efe25e493d70c294a44c3f471652834cbdf710b4f843069. 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/TCADP1820667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa556cf361bb421c16dfb991af050ccd4d0a38b2e3b2e250d4bb110bd8ca24b92. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TCADP1820668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b60dbc107a0d6091a998a9f9dbca9e886662aded8966a39dd906cab3e8354f. 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/TCADP1820672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf544b205552d4dfca23fd7da050d2f214fe22e3fa89dda0a3bf0e709dbb2e558. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/TCADP1820675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74711379cdae9e91d8e06d486670c429d381bb956508648bce6da8ea8d175e69. 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/TCADP1820676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6b6e30172b1fd9d12937d16fd96dc4b2c305b126ca67541badc67c609e3f3b. 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/FRX282219950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48938b9458b2449000163ee1e7a46dea480591875b8db53f44ec2b91adb2ad1e. 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/FRX762102899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ae2b7414a3b028e8475e64887d738fbca572dc31d97418c93773097d9db6fe. 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/FR26V2093994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d8195d3e8606b8ec5a393e888e78ab50ff1e44218f570917c58248437357d9. 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/TCAEO1902572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f4a77f4cd9bce4427b9c9ed0adcdd7cd2df74809f14b347a26dcad2f962b0f9. 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/TCAEO1902773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a7df1f932747c5ebaf60bd9ca6804ed7321bae36ae74a8d6a16b004493c896. 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/TCAEO1902869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c71f2cab4742809aa144dbe6daa313fd0a3ceaf07985d1a4544b4f50cae7b18. 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/TCAEO1902871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a27abb7ed3f7f3e08c3eebe67c38ea40709339973b4795ea8a72f05e72404a8. 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/TCAEA1958216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4092dfa7ed72d2b797242e67699a047cdad5e232058e832beb6f5aabdd3e4cb5. 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/FR96X2509917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36db6decde2820619b1eadd6485000e9d576e01cccb3ee5eaa2df5d154f036c9. 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/TCADQ1830409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x233c35c22d775aaf08bb1f2cada674cfdb65685a23fb37fa7d86ab6f072cffce. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZTAS2269437.