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 0x0f93fa4916b5992c4ad8d2f6f698cfb1e587da395f9a5e71156d7069eb6b97e2. 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/d458029d-dee0-43d4-9367-8bca98f61e15.json and https://artists.proofprofile.net/proofs/artist/d458029d-dee0-43d4-9367-8bca98f61e15.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 0xd5cab18d767cbbaffda51ce959ac03a77639c66362aeb123f407cc8da24b036c. 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/NO60G1801035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fbe1dac61f905a8420e593ff48015dab2d3fcc7dc0c378c409e6c7c3e25a21a. 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/NO60G1801036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe289306b53d0586ec04bff8a8ddddca81609c846a7cee779553e57073fb908b1. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/NO60G1801034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2972c370a1dfba723aefd6907f2f79513310f77574a4fd59d9e220e8623e9fa9. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/NO60G1801038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf63bd8107563e86ed85034bee829372cf3809df12ad172693cb2b79d5715e42. 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/DEE862400925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0901a6bca41538c18cd0bfdbc9cc64c120ae98d60369f14efc69f6ed1b2e87d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GXGUF2500049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8014a20dcba6969350750452444ed7d9101917e0348a3c152b8474419cd75c7e. 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/GX3HH2587539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e56e8eaa23930e7ecbec293264d7a1bc078c11cb750710e0661972f7738af6. 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/DEPL52400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b3e4d8127866bd35059078680725bc6cb982da7cc09ff8a65e52da336e9fc7. 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/GX5MY2475203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca69a1c2358f1ec885f084d6628cc138b19d07dc0744cdeea50a9214cf6e7836. 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/GBKQU2405046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2800795e1ddd5f60a5674cbf7f3ca2746bd47299291c4673db9a5c0c9f67ca10. 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/NLT2H2200674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x387752426651794a8647cac374ea769a17c097357d94272fbf9f0351781012c1. 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/GB2LD2210362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca1441eed29c07737cff4334d894fc762693dd114ec36309d9b1abe789a45140. 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/QM4TX2200776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67bc50dfbf5a8e628e29efe3bd0b6ec106a18d0ee110619a978db195fa497db5. 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/USA2P2152091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9667b79916293037902a325edcbb14f78843a63c34c3b39b057d2f4183da4824. 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/USA2P2150394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aa52e0727cf5aedc27e5ae711d40f7ad47e6fd35e13f15e281e1f29a7254174. 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/NO60G1801031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f146398e3c81eed5cb9cedd4a6704750f289485a5bda409aec6107e6858c32. 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/NO60G1801023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7831c03b8ef29ef98d432ab6017dcab820054f13b50f85824b8324ea675f63e7. 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/NO60G1801022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88a5bb761ecec3526d76cff666461a335c6f559c7ebdbab5b2bff54bd57f3ff7. 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/GB2LD1900101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89cda72fca29ca1a822aa00f099397d6f182a33c5d45c96869f879ce9e908d95. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DESQ31900044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eb571934acadc58ff9d2d0e83efd97849dc73eaf217f8daa5e1ae830adc4eda. 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/NOEER1700021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77608cdc03ab75f8d73d962fbb5734ecaf6690425a7368f918cebc366847c0ad. 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/DEPI82303726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x391f504f3fd04ec396effa951cbf95f73cd4e69a78fbf0fc3f98865d35fd5d3d. 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/DESQ31800035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x423cf8deaecbc6da2885d35913f92fc36a993b1cb2c2e81fae848f2e8bc54187. 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/DESQ31800042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x028a4429588bbb8fbfe2cafecdc804aa4c62d89f5e54e6d99c97368cb551a86d. 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/DESQ31700033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd04733f933fc3ac092b6ebef23718bf8f78211264f129f69c9f66a5466f04a6. 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/DESQ31700032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f85f7458373b6ced7f84d5de2d77f9900f1c098ca436e6a215f5f15a74d1724. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/DESQ31800038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d6332d970da592a049d69fa7bafd57c85f972542205cb18fa0f5ad8c4d90e8. 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/TCAEN1971150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca9d51db3f0363665b1ebd647ddf8e90be8557d5d05db415a02e929e4c536cca. 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/NOHEK2308010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf597cc56777e3255d5a258e879ca648801a66b47ffd686376201fe91ae36110c. 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/GBMA21966433.