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 0x98efa03834fe2281d0b207d1716072a9dd2332ee83df92241a644bac5b453169. 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/2ec1e03c-d9f0-49c8-9184-ddea0d59e681.json and https://artists.proofprofile.net/proofs/artist/2ec1e03c-d9f0-49c8-9184-ddea0d59e681.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 0xd78f4ee5b2ff477e7a146d2ce2d51c847ca1db8a06216c4f5ca3f51772e68600. 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/QM2PV1680013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6978ffcdb907bec212793fdd2fae8c230d9937f11d23c9c4077896c5089219c9. 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/QMPKX1615734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24aaa8033b47c284da17e38b15602ee4c05e84f0c799c42682eca423ab1ca066. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:09:48Z), 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/QM4DW1616597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc197bfae074f1e27d2b078097d17caae6260635cf50e6aa29d08c5115e10ddf2. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/QM4DW1616598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf88ceeab99542a42d90cf14e7816686bd86f8582db21174a4824e7a3e632e3c8. 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/QM4DW1616604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x961e6063e2d29facf15f49c95b79d885fe49ac32162bf4db6dc685b39577f06d. 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/QM4DW1616606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9707ef763b1e9d6f181792b9c118443977b47225514327b1f1371be0149a8d7d. Chain 2 (Bitcoin): anchored in block 957868 (2026-07-13T14:56:55Z), 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/TRA161900155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77b3c2038375af1784fca1493919055a3d868840407a5637c7945f9ab25cbb59. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/TRA161900157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8569304db6b97654fedc7b4a14e5672fb45ac3c55cc3547b63ee89cc7cc5fe7e. 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/TRA161900158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe03dd740c9cfab9e0d38d1139e3840821cf3979e77f9249f90cb910ab7057bde. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/TRA161900160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x610fb6b3b91baaf564ee5b5b9ee99ac630f756f952556d774fc20f5349923355. 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/TRA161900161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa48521780ace1f2f302d8e742f975840b00563eec697ae210a7326f2a57f8e21. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/TRA161900162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b3acf4f104548a8a24afd37abdfba16f76ec16e18e597b1ab9f3c55377fd658. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TRA162000065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32577c4749eadbe66d57832821de675921dc97eb2905145078a9ba1bedebffbb. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZK6J2157664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4abee9e21c76b0cf58e8ca741dc019fff3d4be1d8a4ac657dac5f00bef263b6. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZMEQ2131008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed93bf1a101c83e343de2dfc7a4f0eab154a31cf417be2d4b17ebc8396143cd7. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZNWU2167239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecef308f5359ec298bfdfbd97b4bde96741a93675ccfffbe56669e5ccbc842fc. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USA2P2208103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe322ca84b9808761e20679d96c512847aeb674f551b965574e11cd84e10f4294. 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/USA2P2208401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce71e5386024b45acf25326aff5f37295107853d1acdf90f8dc554df1115594a. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/USA2P2208400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x523927dd2b8112c205da811fdaa9d1036819136fd52cef3ff01cc1f92dc783fe. 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/USA2P2208404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded128c02413e02f53b854f04c6513daf581473abf95a22eeb191458a86289ad. 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/USA2P2248143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7851bee06d85e3cda1cec90785e99e969df18f0ed7b8aa1ad49d0c9615868f61. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TRASC2300431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b8a0850a0006581e82f097777fa14f9bd83f1fae60ddfe734cffce829e25ea. 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/TRASC2300434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x422e499cfd3ff20a547ec5a93a005c0107cc58760ae68271712955e97549fb91. 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/TRASC2400525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54943ccdf920b2eea8652a6b1ad6c2d2fb740f55665154310c9dea4cdaeeadce. 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/TRASC2400526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f8efad6f285df0e24d583f22f1e2e45dcbfbed315bff081875ead07bdedb84. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:53:38Z), 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/TRASC2400527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x607214f277f3281a8aacdb034f4ce2efffc09882b6adb77f5a5dcaaa44b09590. Chain 2 (Bitcoin): anchored in block 957801 (2026-07-13T04:17:08Z), 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/TRASC2400528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aad0f246fd281aab353883b9ae73ec10bbd37be5937758e3759e11520bc78cc. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/TRASC2400529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf368c4e8f2b0e12447c07d9270e6fe6b8e678a4df6fa122e72baa1cab6f13974. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/TRASC2400531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eea2680b4c4669910a43bc27e2e31ce213e45c05cd7937325875128f53549c9. 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/TRASC2400532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa366342881abb3094b38a9226c66b63e63af3042064f0ad3f7e6a37d864ad366. 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/TRASC2400534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3509141d8da2f43ec661a151a3ab80005923e8cad24a0cbe15c413efb05f000d. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/TRASC2500579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee2e15d6186dcb9c52da3aef65bc0fe283bf48b5a9c6897e8e263c29f38722c. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/TRASC2500602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d73565098b7eb9eb9dfa2d0213087aed0ff69672e3b14b39159cd4fc4477717. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/EEHU32001980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x959104d7ce0bb79630e36f5555d0d485b3e9f4f0aab6978673c2cab56a81c855. 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/TRASC2300433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb5d6df95a7bb7c6441c964589be74ad25ccdaf8e075a7d6b82be341cd362ab2. 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/QMPKX1773267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba6837a67c58e7b2251938cd0416e88cf5fe8024fa8db6a1edd31407870a6a1f. 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/TRA162100528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e4acfba434dc8ea25dcb032cf047f9e67ecf9fe72e061f5041f50549013aac3. 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/TRBYM2000039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55da89fc0d77991f743d8a5407d6c7fb150d9511cb5886dc329c15d302a118c6. 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/DGA072434141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee343d531ba395ce20df20ce6967afde31d208a047b06bc8285bcfd531a90d9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZHN31978226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea8dfff6f81f7d24dd2b38d51d28ad525cffbc07dfac975f234b3fcf6743c0f. 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/EEHU32400503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7feb5f6ee69f59692fba0ca6c3be493c0e596273cdff0d6fb291e3a868e855d1. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCAIZ2452763.