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 0xbf70852fbbdee63ecfff517dfa9a83b94ad9ff49e79bc14e61f1b8b2ff387df3. 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/fd897aae-7eb7-4557-8602-38708adec91e.json and https://artists.proofprofile.net/proofs/artist/fd897aae-7eb7-4557-8602-38708adec91e.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 0xdfd9aa25b7b2b6cceb486c1578fdaf63ff19454bfcc0542ea994de6e72273cca. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:33:35Z), 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/TCACW1752283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd00fb1aa953530c09648a56695919fe0451a6dd19e8f06140ffe76754600d60. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/TCACW1752285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b8e55637bdcde1285f65481a229ef28cdaa4527734c016b0d54dfe8b29fd1d. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/TCACW1752287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc662b3ff4e9c99ebced67ee8453bda1440859bd42dd45cad30b06c068c2eab8a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:40:11Z), 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/TCACW1752288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b3c784659e74c286b84e428c98bc690f42dbefbf6a0967d5bea93f0015755e. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:01:37Z), 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/TCADB1754092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3dd8889f942e4cbbd882c6929f1112ae326f6bac2b1088a347dd4d85ed8ea00. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCADB1754093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb883ef71a68de4c6ad4cfac37da78dad96cc87fcbdc6fd8b45bfa65a20b8021d. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/TCADB1754089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5783d9cb9dc26b58ca5b6f6ade575bc07dc7e0ba1db3168421f0208a1750270e. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/GBKPL1954246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a16651f976dc51e9821e9405d30023cf6525edd2b13f0b414549683f1307c55. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/GBKPL1954242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ffaf418e77e50ce22df869e899ba778576ffc5fc15dccc1c6facb3e8c74116. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GBKPL1954244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15ac12451b16378e5d32d8db6218f3c3b87c8cade379acf0cd38b2db454ed2f5. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GBKPL1954245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0488d95b4cb8178849dd7940e390b71d1373c114cdff59f764c9eacefc5b8867. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/GBKPL2004571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d05159fede6c6c6d2baade2645769c179cf800267ff0c5e36b1743935641c5. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GBKPL2034506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a7d6734a85b7c04af7161e36477333417223526b2946667f1e1f749cefb271. 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/GBKPL2034503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6524617ad043c382d089398bcabae1c542c90ab6f2b8f949f7fccbea3f548c0f. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T03:53:20Z), 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/GBKPL2034505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80127dea45df2d3beacda1d230b11838c7ab13dffa2e14c2713398371f060e4f. 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/QMDA62102008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26efeabb0d94da196fd067e90211607d3e13c0f3ab54fb5cd4f00bc6d50888b3. 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/QM6MZ2256305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c84e4ae61167e578934eabcd35362c47b6c7627b141fded363d04355bf7220f. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QM4TW2318381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74bd99166288b37e2925e89c6f56a6b03b241ab7fb26347363deb6b914deb953. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QM4TW2318391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc8d477bd25de1fa2a3869c0a23c34d57fa567f970a0c70e169c8bf4b0d57212. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QM4TW2318384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80127dea45df2d3beacda1d230b11838c7ab13dffa2e14c2713398371f060e4f. 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/QMDA62102008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x851962a48dd9881674390b05d59cf3683568af124cca85a5d21ae4cb056f83a2. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QM4TW2318407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a080bdedcd9f191e89d0446cd0c9dc897300da5312bd1cf3fa0b839a63151bd. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QM4TW2318408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a07afbaaaf7f955920e62512f0ee2ab9dfe3836176d5c2317014cbaee16b294. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:27:31Z), 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/QM4TW2318411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd5ef1150aaf6010c5a79d2a7e615ad524f181c29a1cbec4ef1be212b3b9244f. 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/QM4TW2318410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c84e4ae61167e578934eabcd35362c47b6c7627b141fded363d04355bf7220f. 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/QM4TW2318381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da0fa636c53e319271dfa1be1faa61a4f372256ad6b09e7c9d9f29454109b69. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:48:58Z), 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/QM4TW2318412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x090c0243eacd6994284207ffa7837bd5243b808d4bf1d91e28fb774f8f49a2aa. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:20:16Z), 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/QM4TW2318395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab2d60c44f1091f37b247f2fd46afe38052ff1bf8fbd33895380e8801e85cde3. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:01:03Z), 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/QM4TW2318388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9df8dcdf7e8c8b815341de406484c10c006a78d12083ca99cbb5f1c6c834fd7. 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/QM99V2302901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c16f97f4ef5621b4b2ea6db796fee53a39043187e09be8209f8207d9a456931. 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/USLD91730627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d533787a34990f9b020aa31de14bf257de6b54fe50fe08d7d6548dbfbd8e24. 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/USLD91730629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c16f97f4ef5621b4b2ea6db796fee53a39043187e09be8209f8207d9a456931. 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/USLD91730627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c3875a45492959c4a423eb8faa2512ed318cf6380ef86067c8b88982bfe8d7. 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/FR9O62000110.