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 0x2840b015cade236d260bb8d3a4f137601dece821dad1112325e5d84f57c26585. 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/b30c01d8-7eaf-4354-8108-6593e9fc223c.json and https://artists.proofprofile.net/proofs/artist/b30c01d8-7eaf-4354-8108-6593e9fc223c.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 0xcbfefac046f68879484ccc0e1454af93507661b41fecb32548e8a0ecce22882a. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/ZBPBT2100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x781159cedd2ad1f50dcec20a53742beae6323c9d8110efcfc55fa2a34dab794d. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/ZBPBT2100009.
Ultimate House League Volume 1 by Dustinho & Mghanas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ba2b9b8e02e22ba977f7c3c1d29034f76ae2dbf57d8b03251667b04409249bd. 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/QZMEM2290810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf63da548b46f689568b4f20330d20a616ec7f2604d8c7e5dbc274f48375be77. 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/QZMEM2290811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x877043830326c880b4143f743bab09afde051e9b5d4ce00e732582057b1123e6. 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/QZMEM2290812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc62a1b61dabfd64566f62368186f37f6b9a0bd55150625cff5b9320915505e39. 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/QZMEM2290813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e095f43af9e6046fb63b9cb4ee1ad3f425f624694e49bcc083252b9aa9ae8c. 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/QZMEM2290814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x812d5beb7e51e32337b6cad60380ad4721a60c25a86258250abbb4b4055d7071. 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/QZMEM2290817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf571a136801de310b5edbd18a3dec94031e364f1c9fdd60970f02ac77ddda5e. 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/QZMEM2290818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c61d10424f5adc5036be73b59b9366ab8c11c84b741ce22129304607543d47. 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/QZMEM2290819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bed3c3f6c159bab58745c3d87707ec60b146ff1a93a3a05a258a1f4458ddb26. 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/QZMEM2290820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf158f1d6925d549a6b5a0bc38b5cf339805af899d8d9b3ff2d220e0e9bd9ee. 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/QZMEM2290821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x336a3ab8f1cc2d1f91d900faf5b0f656fc1b45c0e6cf2a87f12f315c62b5165a. 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/QZMEM2290822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058ac8e1183577682dbd0797bbff45f05e452eaafa645791e0402fbf1a8e9e48. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZMEM2290823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2059fb8d24e9c8181fb503aad6a52963e47f4fae5e9c73e5adfde8e018e17a5d. 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/QZMEM2290824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a2b8be34993234dae769221c2d0e3f2bab18023557fa47539283b6b96b00f12. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/QZMEM2290815.
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 0xc7d050b20c32ed830fd83519103dea62d3d56b131442b7e60cfa2a6be7d0bd7a. Chain 2 (Bitcoin): anchored in block 960330 (2026-07-31T00:58:21Z), 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/QZMEM2290816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x019c6125392fb039e2f129b399bf66a85c0d79fddc104f5f76bc0a9c6ce3e146. 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/DEY472373311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e300607f588fdb3afdf824809cde0f59dc5d68be7a2ef8ddaa25d54e3c00b7a. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/DEY472373308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x798d4de29880fb02c7d02b948ed39951ec96da85142d269adc05638a3dc4959b. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DEY472373314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6acb867e07a3d16e3050092e98c1aab0edb422cd85bf8f0a65232c354168aac1. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/DEY472373316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82f18e035af7e44a5bb26f5634a0af47cea722e07900beab726a8d68f5438f27. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/DEY472473326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf280e6d22e1689997333567997db958bd9ec52857c64ab13d33c506009587a79. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/DEY472473309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac9dcedb89c0645a2d11bc86ae011ee49f3ce984f3f43c0b84de8b03f9a49259. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/DEY472473310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd541bb8b2a0e40683d07e8443c35d70f167d8ad0ec86e36d67aba12017978793. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/DEY472473312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x639b34da7c04c51f2725570414201565b376174072ca2b5459333e13699ef90b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:01:46Z), 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/DEY472473313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3669a0129b2d271fbd681004742a0c4449fdc1834bebafe7862adc93373c2058. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:43:30Z), 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/DEY472473314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e33b690b431aa995b65102c5ace7af096d11c674d97132c3f2d77468afc1cb. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/DEY472473315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ca75ff3525094feec61b88a54a7524e4b0145e271b3b397ec086f5f2e771ba9. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T12:32:38Z), 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/DEY472473316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa21b680b4f9046317cc7a3ff61dffdac2bd11cb1341082b520f5a53bfbfeea11. 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/QT3F32524590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x531848eea88f4711ed0a8589017bafd9cad59558f77ff8f1b30889e1c564b54d. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QT3F32524591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec77ae1a872c2e5dd087073767825d724d512006d59eba7aa20b49dc62f25d4. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QT3F32524592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa93bb8e57ef004198de1be22de5ad164b06ae10ca5732ad3864baa1b95ddd40b. 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/ZA9ED2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a2d6edcb6104ab346ea92839d3d14818e46cf00cf6db3cfc4a107c6a0d4a4c. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/ZAIFG2000022.