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 0x656a47c715b8102e390e0396694df185e72dc54a7897090de73de9222d7d80cd. 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/3b3a83ad-c3b6-47f6-8618-29dbd24c76f5.json and https://artists.proofprofile.net/proofs/artist/3b3a83ad-c3b6-47f6-8618-29dbd24c76f5.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 0xdb695347b6aa35f878e086aebbe13cabdeb8a5af38ef21a6e375038cc234cc50. 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/QZFYX2494537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b7338c5961a87715028a6281b58380e8d027e0b61e51f04071c67a156281fdf. 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/QZDA52412269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e4a83fa86ac7795f47ce0162cc68cd7ecfd871157163960a042ac41fbc0a6f9. 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/QZHN42224781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x163a034a90dac9ddf0be452f3a42f62098567b0fe0c1fd029103950b3e64795d. 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/QZRP42370704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec1085ea57d0abda05f4044d48df5f927d390390e6c8715a22df061c9185dd82. 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/QZHNC1964866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf014ef9909736998ba0949b052bf3a62c408437ba88efd17c789d6d4d06346f. 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/QZHNC1964867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce181014d23daa37118adc1ebabce68843af9649c3b14f63325ef7b2cc9d01d. 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/QZHNC1964868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef93325a9b37d482f1a6cbf2405959b36904f9a7d13778e61442c604aa89e95b. 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/QZHNC1964869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x656d9e28e706e8387b11667006bd76123778149e00341009790d6af9b30e4791. 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/QZHNC1964870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c9943353a241f0efddced0c93feec706512babc4f821418730ebf8f7197a722. 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/QZHNC1964871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5ccad173b25b1a02fd12819844761136bba9b03608f0d654a9a20f1e073818. 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/QZHNC1964872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a7f79b476f766cb7d888e25e6da96c441b41d437e3e461bc5ae49d8f735d73a. 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/QZHNC1964873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x081fe48f51fcd5a58df20ecf76fe417b977e4aefd8180a41cd9e9395a09f5e5b. 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/QZHNC1964874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63e6f5ed21c1c14effe9171cf9b82871370c2cfefb07dc7553dc550eae33af2d. 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/QZDA72483941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35314593ca199bf2d9ab87eca5fae72b7fa82f4f52813ee8b515d5efbb83cffd. 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/QZK6H2315713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca6a9172cf52d9baa70ac85a3070518181427baafcb4b9fa2fffaac2fb87da3. 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/QZHN72116401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x230bde1cde6d614ee7bc54be3d88663c11f33d003ef37716443b8634c8b56081. 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/QZ5FN2231811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7299966020842ee39ae50eb982473ba77c4e41e7335317555050b8d16322be. 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/GBRKQ2416069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d3b2962c65b6edd251124874fd6153fa729f8a93f714b9d5985eb70ab17319. 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/QZTAU2357550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdffe58196d51e2e61e5951686ce2b57f0a78bc2bc022e777a2f73e83526ac8f7. 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/QZPLR2265982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62463adf94da07eedd0b3233a3cbbcef21c54c53d0e1498f0422197433ff0276. 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/QZHN72317743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bca1bbb92f19fd5defe2f19d864d7764070a564f3645ad27ab91cff388ffd70. 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/QZHN52348225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79df3a5139bb93ac1f0a05b14fac5f0502fcb3574a288ffaec0fa994f6b5eb7a. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/QZHN52348224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf2e102173eb0a9ed1358d9d093f13acf1a89b4e4a0b4a51bc6808d1902ac7b9. 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/QZWV32422834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dfcda6fa3aeb0fed4c25cfb017c733f869e7b8b3ac8ea50967a789795cf3d49. 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/QZFYZ2559703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b1258118fb47f71df26493ebf05a332c233d8928f5d6ea37d0ecb07733295c5. 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/QZTBE2461355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49bf0cf45e88a194d14942e1beda3fea0f5359e5e1f6f3ee12759c73f754cba9. 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/QZTB32338234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdffe58196d51e2e61e5951686ce2b57f0a78bc2bc022e777a2f73e83526ac8f7. 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/QZPLR2265982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95f6c99b7fc881e2e306bd968c4c46fdf5adf35f38b1079bb524a9bd301aaacc. 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/QZNWR2293193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc92dcd8fd616542275af6a4d980b0bff73170df253583c48a357f0ad05efe42b. 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/QZHNB2265329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa77b61eb89447f4db7192df6307b868a79473f6e7e0eaa7d4edcc9535bcbddfe. 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/QZES92277089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67daa23bad9d0fc1163401a49f54f6d06526e390949816f7e6ff54ae2be49f4c. 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/QZK6K2136488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e29b4bf3e3285779f5de6d41146490071ee0da4afd1ee34739832769d50dbe9. 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/QZK6K2136489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2686575a404f3a15dd4d78fa21c1d2828e86378d9402249c806b7921d0ad25ea. 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/QZK6G2055214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x176c6e0b13de2626a5652f2b9b2649a4ee989f4e74a961172170e0085f84e8c8. 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/QZZEB2493014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a9afba9f8903d94f0d57c3f4ce54719745151c9f177b21fc74a6162964d0d40. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZZEB2493064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d0d406f3dd7ab8b045ea6f9e7876f256decf96f55c83e54ba46880220eb45f1. 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/QZNWZ2170117.