Default may refer to: Law Default (law), the failure to do something required by law Default (finance), failure to satisfy the terms of a loan obligation or failure to pay back a loan Default ju
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a5a15ceb32aaa8b2a8161194460e3e75315f63e26c60b30335dd71cd3f8da6d. 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/80a76ff3-2a5e-487c-a414-e9f59cc144b5.json and https://artists.proofprofile.net/proofs/artist/80a76ff3-2a5e-487c-a414-e9f59cc144b5.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x865d5f3bcff0d63e25c33b760297c3de4446b35b71228f5670778f62e3a1316a. 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/USTV10100097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25499f37683289a40c1f1bb669fb96c7a45301154f348911bfb801033f251ce3. 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/USTV10100098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce67d99fabe02678e53551aadb3a89867ba871cbb2d58798ccba83cee91a0489. 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/USTV10100100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd478f45eb23283d6502f7e27e428074bf769c816d4a561b87926acee4bb74f. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/USTV10100101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e1da1920223c58cb5fd736b46cb386da51cc8a4c08ad621042acdc60c010231. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USTV10100102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2008678620aa9bd9fb55ef1270740cd26aa69c5119c176f0e4a812ad68e29832. 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/USTV10100092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ad1d968794e8a6ff1a768de415f1fc3798f4950eed468313c3413209fc5d78. 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/USTV10100099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2008678620aa9bd9fb55ef1270740cd26aa69c5119c176f0e4a812ad68e29832. 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/USTV10100092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e8e51759de2f58da3fc920567a8f099572e02385851c62eba8ce3d71a3ea579. 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/USTV10100095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2a1932b4b5c4900774888e99b9b70c1db5f06ea9ccf566eb145af79d38bf497. 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/USTV10100096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x865d5f3bcff0d63e25c33b760297c3de4446b35b71228f5670778f62e3a1316a. 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/USTV10100097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25499f37683289a40c1f1bb669fb96c7a45301154f348911bfb801033f251ce3. 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/USTV10100098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ad1d968794e8a6ff1a768de415f1fc3798f4950eed468313c3413209fc5d78. 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/USTV10100099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce67d99fabe02678e53551aadb3a89867ba871cbb2d58798ccba83cee91a0489. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USTV10100100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd478f45eb23283d6502f7e27e428074bf769c816d4a561b87926acee4bb74f. 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/USTV10100101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e1da1920223c58cb5fd736b46cb386da51cc8a4c08ad621042acdc60c010231. 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/USTV10100102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb6a80cd296bd54793c2845b1de959765eaa7a427d162c563248114641f0fb5. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USTV10300131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe12df026a8cb1b38a55ee39e3a1831801c812999b41be0ed04c942a52a3e0c66. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/USTV10300134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14dacfd1c80a00200cf1005739e0fabcedcd70794152ad954c0cdb0b8b4f26d9. 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/USTV10300135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45167ec9b25c9e0eeaf6cd7d50931307d3fd434fdfdc7fb3fec9bc9929d5e54b. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/USTV10300136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f70400a805cd51064ddd1baa6d276a2720946987cca2ab660f8d5fe2b91325. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/USTV10300137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a9e4acc7f5eca66f974fc19af8b5afacc3dd028ce12d8f3c55090e5e9253e3e. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T20:40:29Z), 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/USTV10300138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6ac55d1ffc3d3937c3df562ea454cdb533055c01e3f2416e4573d3f0e81c27a. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/USTV10300139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440ba30bfedb09f9d67badb51a47d795c804c679518eb335a2466a1905b73f72. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/USTV10300141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18e5afbbc0812cc5c46fd58c082033d20246fbe69f7a4104650fe742c5a585df. 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/USTV10300142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3e76f33e179236cb0279b0c926b83c6550f7469da4621226c3a4fbe1581f825. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/USTV10500537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c29dc4b612284a2b4491a2791260d67bf67516f8b0f6d31e630cb1d8e3c424. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/USTV10500538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e24865bb1cd6e2ae14ec3e164053c072509e5ade2a6577683a0236db9bb065. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USTV10500540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10de25cd15e1faf206918d2370a77e7206854305d5bf17048523dd5cc411c0f7. 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/USTV10500541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d7b118cddd80d5dab79ad7a8aad1bd0e142afaa965b8541a1d61fc276fd18b5. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/CAEZ10900058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55a41d4a72bff8ea462b591547ad2f536abd77524999904b128c06a455514978. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/CAEZ10900032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c8c8e0d121e88569c79868d85c6eb76e35e66da0e17f21e6f0348355bbd25b. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/CAEZ10900034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e63ae33f237313d978d4bb065d81e30f27592ab96a71a4833757a152f9db1a3. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/CAEZ10900062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf82da7c890f871da891b13d1406422ae16a084818b2ad1aae1bdbdd3deb407d. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/CAEZ10900066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55a41d4a72bff8ea462b591547ad2f536abd77524999904b128c06a455514978. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/CAEZ10900032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c8c8e0d121e88569c79868d85c6eb76e35e66da0e17f21e6f0348355bbd25b. 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/CAEZ10900034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6059d7acfb519bcc3958670128ae7019af32aca33d1b21e2a191fe8424845dd. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/CAEZ10900063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55a41d4a72bff8ea462b591547ad2f536abd77524999904b128c06a455514978. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/CAEZ10900032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x702b7293ac86f14a9a3e9310bcc31b510566ac4a65a503bc59ac38c5eac723c8. 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/TCADW1857931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf396dac3a27b2a1d1c0217093c58424ab87ccb29c88bcb5f018fc275b1edce15. 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/TCADW1857932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fbb40294604121a106a6d8b4847f1be10ccbef4fce2ccc3e88199ad4d9cb00c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCADW1857935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc878a2c36796c0fe2f3ab68ce449e27114cb40ad121166ad99ead4ddb791fc. 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/TCADW1857937.