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 0xc8096b5fd4e374247f3339d14e31530600bd103fdfad7da49796f6931a053f3b. 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/f4f23b67-fd35-4d8f-a451-06afc457b1bf.json and https://artists.proofprofile.net/proofs/artist/f4f23b67-fd35-4d8f-a451-06afc457b1bf.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 0xbee44310d64124fc52740558bc9be42035a81fe0b06464d722f1aae9730e0e85. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/GXD7V2560395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x412a53fc17129161c31552355be397f3cd46b23c1cd4e7be3e0d3e74f680450e. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:52:24Z), 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/GXD7V2587366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21dc4ef7ec82bcc0dc228b67ff7df5512fa31af2c75e547a25ef7542b14198c6. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/GXD7V2531906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb07667583bb106121676609d5d431ea81d858ddd7c55727cae5b3f63382b0e96. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/GXD7V2531158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46397dba3c1b1edaea11e0170338b899964e6d39b44ea816df5fd858d05b57f. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/GXD7V2564204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe30865c003e8a2912824ea278ffbcfda8575a09874f30c5e723adc63a87fc9. 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/GXD7V2555746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0001638708802538880d20240e9602c569f4d3d675788916b67a433b668835cd. 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/GXD7V2513894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b74b0af9ceec64e56ba8af7cdaa0fbd9b00b17f7d1ad5b160b625f9f057ce62. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/GXD7V2500514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30257b6e8737cac9ecbd35422271fd594015d999bc6a782ec3c67ad874b8ad95. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GXD7V2528292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x231fe85b7482cf0f4cd62d97d25cf90b1d6d05be494161d954ac6f9abe61d4a9. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/GXD7V2593561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6f8caaec5a0b74cbc1d650fe0947f29e26990dd191f77d39a6b736881630fe. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:28:25Z), 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/GXD7G2585928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f12d6fd553f113edd3dffd3d737cc86132faf2b3e8aa787f4310b76f9024fb. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GXD7G2561908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58516240e04c62e5f2b008cd14e9bbd4baffede053e6430ba5a286b63dafb389. 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/GXD7G2547709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b6c0a3a200b779076d337c8c0be87dff576e5f68136723abca0e82bcf8ada8. 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/GXD7G2507022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cda6c6918e9c345a9067d1e0fcd2c5b3abfe97295aef02c5aaee51721237ef8. Chain 2 (Bitcoin): anchored in block 959011 (2026-07-21T16:10:54Z), 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/GXD7G2521707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a537c54935a3554e0b76577b5ea50d30b9bbf2c2759766e9a3f74ca8b09f580. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:09:48Z), 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/GXD7G2588443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e8bc12d492c7d41ffc271c1d3ce16cb8873d9accdd1160f8682c3b68df315f. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/GXD7G2522250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62cecbaa7ecb87f5d9ec61d630168d81bdb2dad2bc1911580dbe8639c15bad70. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/GXD7G2595446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e86995fc162e4fd250044e6dfdac5dc12b795785e7a652b6788c7871f35557. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T06:31:32Z), 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/GXD7G2537937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4809974e9a44205a2db7966a28443515abbc41e42393febfc89b7c4cd83a06a. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T13:46:15Z), 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/GXD7G2554143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87bf9b04f58ef790e4aa453848910ec6350057a5163ffdbbb830a481522a40bf. 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/GXD7G2503523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1e13857eee16083efd341b4f925c47f985c344f04b3d21a584d501287af0740. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GXD7G2587047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd325dd7f4355abfb4430a582c2342fa25f69697432d1936570d7e39817471b6. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GXD7G2542240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ea50689c1fbc0e9e439ae7ebfac1b01f0fdd71788878472033a929ae9297ad. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:52:44Z), 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/GXD7G2557968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d86486aefbb6274daf8404a8da235665ac5b1677f80b78804d8e484d07af46. 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/GXD7G2503282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0015c7b6ef0849fe23cd73c1084bc9b9779c200acd39fad9dd71a66a2580675f. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/GXD7G2569777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9667f2d6f4eff34f9ba71247b314bf4f5d3ba1ad71e8ccbe932db794ffe99f7. 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/GXD7G2571817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e48b55bf7b3e4fcd080bbfa0094bcd402cac5968ccda0f29eaefd0b69063a7c. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GXD7G2553992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf01255914229ee1d972bef5b9d404e2d0d73724ba746409ededf23eeb93527c0. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GXD7G2510239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd90494f1cefbffdb04b9e62e17baaac192e1c150e80b2499094ba4b8892401af. 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/GXD7G2562112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5751821ec4d340be17c4b81039a951121f245485856b23cba2bc31f259dc0e9c. 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/GXD7G2523368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb680a9edf6acc81c18fc656d20a088732322cd4b470845845987aa76799352b1. 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/GXD7G2535883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b106c2aa7d76d5a33157748a2f5fc2b23a16cb91d52c26ad1d3333326cbf805. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/GXD7G2586864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x677879b6871e6ebea2e6d5f2293a8d3d44dded8a66ef12af42e61317bde9303a. 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/GXD7G2567806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffd8b888c32ab53b4274e95fc0eb3aeb846fdaccbf91d9e4fff2f42b4e59f22c. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:09:25Z), 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/GXD7G2591880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x923ea9bcd119c26fa4bd2a660d378bb6e805bcdb47e7bf61145746c9cf63dca0. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:22:35Z), 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/GXD7G2587304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0614aebdab5a81ed668fe387231e42dc5f5a6b6b0181060c9b54da4b2c5f77ff. 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/GXD7G2595719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f89ae01c11c028d6f7e4dbca4165c25bac294a3fd708713566f86bdbbdb114d. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:51:06Z), 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/GXD7G2577761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73a757b51a7b48aec304a86ab216d88588038df68d7def1c6cb9850380fb6385. 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/GXD7G2524793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa72900bcab8e40765f4ced813b0fca518aae3194fd4d60803d2b52b8b8c891. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:08:24Z), 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/GXD7G2537387.