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 0x8d5e0dd373c44de1a6a6dd13bd820aeae39c0a757e98cf311293df5ee79b995e. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ebd3debb-aa68-462b-8e84-dcaee623d53c.json and https://artists.proofprofile.net/proofs/artist/ebd3debb-aa68-462b-8e84-dcaee623d53c.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 0x57cca4a86e0782e7fae8870b3074da9b31527c6ca6d3c0a4bc5b27958325f062. 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/TWA219303408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672ceeebaae0e7e0265591ad622e8f1596cd36db987e6319536db959ecf4ca83. 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/TWA219811302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79af7e9e6f3548a211c906d12f217304662ba7508c8a54f1f2ea37f2a37302c2. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/TWA219405304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad498a0a7263671bf8fd415b6de16913d1a9a917b2dd0e2f2b946386cfcc4e47. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/TWA219405308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b21643664bad8aba6aa39107bc53d34a36cec01362c248a66a53d0bafd65d02. 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/TWA219405310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe249fb31571b1f36d9ac6582fce4a33da675259b8131a8377cf5e62d14d2915. 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/TWA219506906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1984de2a3c607052efe8cf4c50fbd374a935fdc8635f02cb6970316fa4cb6b50. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/TWA219607901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd41f8a20d037f57dd525b3d83864acf0dd804a43c41814287da9d1670d8db68. 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/TWD150000108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c1e40b42c8d430419446e9e751258bdbcd8435c52cda8d43313ea4918bad7b. 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/TWA219303402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ead33faeff8f43127c6c71e7d66ede8b9e863de7da2ef17daf4642f0032cc8f. 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/TWA219404307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79af7e9e6f3548a211c906d12f217304662ba7508c8a54f1f2ea37f2a37302c2. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/TWA219405304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebcbec111ee3d0049c10633901f0b286a1f12466c2db5475549dd90c7685bdce. 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/TWA219404301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda3c83cf103659fb9eaa381e66b4c77c81cb8f2b3a1781817fa37da597984f90. 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/TWA219506902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe7b415cb25a1732ad96d87866ab261bc8b55cdef506468e18c93c2d6eb8442. 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/TWA219303401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2125669b98d753dfaf65564829c35600809ad856712bb6cb58148ce09d4ed15b. 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/TWA219506901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672ceeebaae0e7e0265591ad622e8f1596cd36db987e6319536db959ecf4ca83. 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/TWA219811302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa398a1f51c544c70bb0d3cc839bce222048557a342da56f540e59742c5a5727e. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/TWA219405101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda7859e97afd75703ec9536991af3eadab8a16f8929057bc40aee804f4781929. 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/TWA219405301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ec1aba46b256451c371408f9a1d65f973ab954db3b3f337a1357bcedd28638. 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/TWA219405306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x635699bd030e66d576b03400e4b353bf6a35acec2e1ff9f26133dc1ec89c4252. 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/TWA219811301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d8c2c0190acc4201981ed214b150ea99d41b827481c7eaa53afb1ffc54ab34b. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/TWA219405307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f323f92756b309d06ab6041da4dc3575632ffc5398d883c40ca1bdf03d7efd. 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/TWA219709906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6275ceec1ddf78e8ab638944a7c8c8c8f55e1583c85e32f2ea96316107e4f9a. 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/TWA219404302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b6c230b3d18b933fe6e049f6cb70c57dd65af797fcb70be184d6b1be0a4cff. 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/TWR131303601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f4e378b067ba5481df6456ffd3209708d3640263d3f3e48a6441f98d3463cb8. 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/TWR131303603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ddb4cf482837f8a36df0ed213dc7daa2dffa340cf1a2ffcce10308b7402d20. 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/TWR131303604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60ffb7265a15cc5f206065c159d28e6b8828698d00b85959fe47634fd7d680f6. 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/TWR131303605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc33a8da600ff16a14e47c8a22468abd5764f6efcd252cae137a623840da62b. 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/TWR131303609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe781b45921c478b1bcfb90d1171a22108fc7bbc4a562a5e7919183d8339d20e8. 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/TWR131303612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x593fa3949ef91ea9a5c20cdd9467eab053783536700808725afdf416721c52c6. 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/TWR131303614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x356b2f15d8ea3e059a02a6aa00e1e1972a80648bc21dacc01595a539373604fd. 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/TWX971300102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x987b9c519fa7a4e4b5a0fbb6c355d191b0751e9d132b4e311d0cdccaaa393cf4. 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/TWX972200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21c9bda768d2e809dec8506afef9d27219b766f1f03063ea1ff9c041d042165d. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/TWX972400109.