1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x6f856f75703e264eb0cc92735bf6e231dd520e3dff7c9f84f20aa73665b166cb. 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/e6b5c308-eaba-4c96-a36a-a70eb3fe4cfb.json and https://artists.proofprofile.net/proofs/artist/e6b5c308-eaba-4c96-a36a-a70eb3fe4cfb.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 → block OTSBitcoinBlock must exist at that height 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 0x0edb0c5c5c8131bb26dd2acdaa85a77988e2ff256f36aa433ebb3d502d29d81f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZDA82364816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb38ad098afedf3c1dd492d47a9954a735c30f8c2e2e7eb1b447815d66cada3. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZDA82364815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e6e0b70ec88534e036dd89a050e7a7189b34e368ba92f344d97b4cb8b03b9aa. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZES72326173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc78771a56fb07660a6f9fdada6fed59f864004a9a9c4ca9a183d08cf34de3e9. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZES72326167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa70f07c2e55ba0ad56ebb34a5d8417d96d90b4728377d33f64cdb6c95a4d4b1. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:10:50Z), 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/QZES72326182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4e16da056edfb26b9e731397539275409714d99e58c9a24fcc72c30e4d9ab8f. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZHNC2306385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x348e784605b43a21ee81125ff221ca5a69aeaf33ef9719fcf88cebf263df8114. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZHNC2306387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0129694de987dd8ab199e8ccefa806c07ce571008359abca64a238e1adb3a584. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZWFL2316119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20613ab91ee69736209d89b9fb02303e006d5602d7699e309bed6e4afa7bdd39. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZWFL2316122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0843ab2c0a3376d9a3469161ed5af441079ead15e16c04a2ced9712712da28a6. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZWFL2316124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe39be403e177ab895c591d99b5092d6613bd33b3cefdc192b71be78e1995cf05. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZHN52463573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x597b28a2d4c81c4418a73c500fb65d5d3db1c846b46622c97204ae1486a9ce50. 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/QZHN52463574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a75552b703a9c49ed93c431e31b0d55a0e81baf5835a35a07208c00b23f162. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QZHN52463575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3817fea51edb9735b45c186aedc4aa5da0ec2843d21f0344a8039f5cfd06d9c4. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:25:00Z), 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/QZHN52463576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ab3d914a5de3b41b76445c3a8373c11d405756bfae2e435ab1acdc937a943f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZHN52463577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa634eacd0d27961a8a11816e08e4097f40f43af7597a4fa8f8bd84222af5f7e. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:05:30Z), 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/QZHN52463578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa39fa3daa016cfe8dd6ae68454ee8b44250d1f933c0da9010f48884767f58834. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZHN52463579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5976a15da16c77f1c530a5887186179bdcf3255e73ae54d78e7c5217064ee11e. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZHN52463581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38115d7d268d56fcc48f4ab69041f73dd6f28f7a7c7588df3e5985556f11e790. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:48:59Z), 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/QZHN52463583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60254fb708a5994d9018468c1092fd0a18768091d03753a9c91c2f153f276ea8. 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/QZHN52463584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40a9b2ad60a41fa000aefb6cda7ccdb770cede0556c0328cee55d3645052b343. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZRP42439558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7abfac2694e6f9f99c74302c9b296761be08125c173994249ba8145439c6690. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:23:27Z), 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/QZRP42439559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc164b40c7c5a39210bc9f2aadeb9f7d010dbe12dd314c3375dfce42b7a3d6150. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZRP42439560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c928f7e6ad308c4d32ec80169fc60720b6f37abd05d0df11b72ec03d78c28f. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZRP42439562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a7fd2411a94182b4ac26a54431eceb8032a83d34393752f254f835530b7c2e. 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/QZRP42439563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5932cfea095a2985c3314fe465d4f81d43a62a45878c75f7d291d9c3ab9bd0a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZRP42439565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cfd1512b5dc0025542d4af4266165ccdade21d6148c530b6249bebe934590c0. 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/QZRP42439567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b8e361a4288cd0fddbb7358b15fb261d553ff5bb5db5e276d6a697b0039e449. 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/QZTB62530390.