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 0x9ad28fb78cba9436fc752cb89aba842e4301ef0a263ee8d450fee7557559ce08. 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/8432180d-a943-40f3-95b2-41b3c470201d.json and https://artists.proofprofile.net/proofs/artist/8432180d-a943-40f3-95b2-41b3c470201d.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 0x807721ff30e65f0e65073b22c532daf687265ea53f170f69a73da1350b47bf5b. 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/NLYK92400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3c7e73287fe0e52fd02156b44d41771e4a90bb0e66ba693af6ec029233931b6. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NLYK92300088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf425472f1ea189f0efe00ea3025b80cb596e2e8cee1a7cee56a1359604fd54ea. 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/NLYK92300075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x591b40d971000b6cf2ee9b4046f87a6c82f9cc088f5e26eb8cbf583724eb77de. 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/NLT2H2400363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe4fba83684961ee45752fa810ff2f0dd5e30175d54648c39be762a4194c6fa7. 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/NLYK92400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c3c5726ce1ff92d1a0bdfcd9b77bb489b18070d530d9138bd75c37bbece156. 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/NLT2H2400233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e9c7a517ea7d0accdcce7bb9dd07843bf37883fa8bd42dfc91f79b0a190d9a. 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/NLT2H2400176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99de0e8033033a2700bcca6a2bdba00082254847bc733cb6c48b388eefffd058. 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/NLYK92400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5efa1ffee6e71891a4c651fd0fcb4c4cf5057d5fa1341fc2963315d29f5829ea. 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/NLYK92300185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d612e8a77739c81ecc0fa8b1ce18cc2aac275d4018efd7e0d55044ef3ef5ec4. 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/NLYK92300183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d7d0bcde836f148030eaf04cf82eb5dd30334edfaa3673969f176e9c8e2b87. 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/NLYK92300179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb058129ee6b1610262cda5a221c7a62c1184b18b57d6caa6c8f93fa22f6570ad. 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/NLYK92300165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe8e5c5335a694d423924b79706be88f8b6b2f6e4d18434a5acc28ac049b4ea1. 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/NLYK92300134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d5c02a534bbb87486e04c7e7f1db01d00aa67c5e582bcfa937818ae45a33379. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NLT2H2300730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae406547818017fb565028e0e217a346132bf1dc8a087c0b29a77cbb1c0da55. 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/NLT2H2300572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11f9ce1427e68ac0b198c7f7e6433752c57a068b5eaf0af630eb7fb6746ac42b. 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/NLYK92300110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1ce4fb81c2bb12ac4e932400328ab2525194f4fbc2756abb98acf8f765014eb. 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/NLYK92300111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec2b8d7040adc3928dcf21ab6130ea94e6cb688f4554e39d754928af89353694. 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/NLYK92300046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4cb8a5b8693b0d0304e45a7fb7479d641541ab43093741fe89677776016d30c. 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/NLYK92300070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x754fba83cef0ab89023d9fc73cbb1fb70ad0e11453864843044dadb35e3ef33a. 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/NLT2H2201056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22cea911ff6f0fe8b7fe6cefc533d78d040de8151ccc57401fa1764c87faf871. 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/ES5052200474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa01179cbeead607bc1b49fb5862151bcd391a9ca25924d24a029613fa8a39785. 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/NLYK92400124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa8f59f880868828dfa15ff41569a4ef9fa6ffec68ff574e8f13303a19d48636. 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/NLYK92400119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d47db1448cb588d647777a65ec1ddf75ceb783180edeed33d3f975d232b735f. 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/NLT2H2400621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b32ada15aa9215454952127bd2568cc38d3e8e13285465ed9041860b39d425. 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/NLT2H2400556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x061508bfbd5cdfa508d30a8f1c2890c2699f115ae0c5c01224149de13febc5bb. 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/NLT2H2400471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76416ec28e4dd6650e866ea0611dac4dff99558c44b8b35e3e2455f07f5858cc. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NLYK92400069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c0f9ac47c7671d9b0f50ad203ac36ee59ce7c1b2d92beb066f27b5f5819092a. 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/NLYK92400138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800b4572416b9660f411b6442ffcc2857dca9ef8591c15e10f441b03fa4c3a53. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NLYK92400168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e851602e416193d9e71e2cfbecc315c94cc51c90643f2e966a61483fb24e636. 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/NLYK92500165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb620e272d980cf77cf3d0d4f00a7d00a8a8381ef2bec3ce0f4995b50220fa7b2. 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/NLYK92500129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x304fb4aa62290a15032dd67d283dc427db8d8a86119f47f2b4ed4e762a959ce8. 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/NLYK92500073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b7cc901fd770ce5d49a5624deeff11330217f0dd68402e65c0c9265c599611. 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/NLYK92500064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6c9b4430fc1b5f9cc4a69bbbf4bfc7e3c35ba8e5a7b04cf2953c3b15d3a9fa1. 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/NLYK92400331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x376f368669369334fd6be0b03523233bf7464c9abdae494f073a1b8a2a750471. 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/NLT2H2401521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea3dfd3428e5c0a23a898521a012b2d710edb03c8ecdb6ee12ce00f938d40ced. 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/NLYK92400290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x499fbf9b4fda881a3c5a61ac9d7f9207bb251ee92dcd6fa990a19b7d512038b0. 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/NLT2H2401354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x633bdc91d2da629b960881317b337b8cc070ca1afcb9714f6eda07f1c5aa4eb5. 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/NLYK92400240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61136f7743af4bd9845dbd20e7c176c541f132339907db937734dbcc97f157e9. 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/NLT2H2401219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6950adabfd5707f421351c0762769dbae89d892765eba8b27dbddd413f3cd36. 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/NLYK92400191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7540c0486b6bd0a4e7cb4cbf9af844017ee6a89f3ae600aded6420c01fe5d9a7. 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/NLT2H2401168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbdc22b1f73af55283bb7a4f8feb15135452845c680ba2af7ecb45cfd9c477f5. 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/NLYK92400154.