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 0x969590137b6161dc7c5f702a344b80bec7a0accc4ef13ff352ea104e098da111. 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/d73a01bd-bc88-4734-8c24-b4ddb9ffe878.json and https://artists.proofprofile.net/proofs/artist/d73a01bd-bc88-4734-8c24-b4ddb9ffe878.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 0x4e88d4bb6284cd78458a9697445794e85288b85bb153cc0ae61477548ad54639. 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/TCACX1715917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c4e97c3b8587f59d7125e6f1643207aec3d72f3f68af00c1ff6223585e93963. 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/TCACX1715926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x630fd9e4a24d853174266717bfe6e05b301531bc6e716c95834379ff64d23c15. 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/TCACX1715928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c2baeab26e49b18ef0756184741d02f596103743e0ac15751ef1e6ad4d1cf29. 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/TCACX1715932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba91b803d13f2a907035e824371689cfa2a66743ffc220e0258cca59dde2dd83. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T13:14:47Z), 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/TCACX1715934.
El Tiempo De Dios No Siempre Es Perfecto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda1da03d1e6633aefce16c81a7cbb467e91f14cd2c75165168ed8c21ce40f152. 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/QZGLS1959541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46515c087b1f6a86a2c6f3b907aa08552f501e9274a682ca777143baa225338c. 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/QZGLS1959542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb421eb6768be92971b55a845b184abdcae8030daa1984a43c94789a974512a0. 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/TCAEH1933302.
Una Semana Antes Del Paraíso Lo-Fi Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ad41379d381562af684a975ea58740bce9cbc7b3abb8f5e35de075579dd40bf. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/TCAEK1907390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf787db1563c49b014c44661cc089baa8ac19d8862aae9ee8a4889003de2c8e5e. 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/USLD91725571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6945fe971e69ad22f77ef81cd48fadb02d6e17a55f9ae26b9f67a32f2204e93. 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/USHM22067598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd41e4d051d718c03d604de233d2990dad6e6d69ce8c5dbdb1a506496543e61f. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/USHM22067599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6c76f777301981167a545a96a9f591c2190f2b865275fc67557fa35d24f6915. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/USHM22067600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc005e88c5fd3d7c1fb02c3f96d4fefe019e19398636ada0b11211e269aa4cb65. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/USHM22067601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57628b1a334f183ab039efd81616e3884590265a57dd54646f5312bd6568ab5f. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/USHM22067602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83468abf74ba9b0b98db28f8e578474cee4077f325709a75b43e5ab2b4c4b18f. 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/USA2P2225114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e38624cbdb94eabf26fd5f011d8bde7312e365ceb24738ee5ff52733c0ab5e1. 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/USA2P2235762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556c491a952e77415a4053c2581f6c006c55893a8e5fe10af591a7b4bc8bef5f. 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/USA2P2361145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dcb13f613efec5cf8638c487c720ebeac80c59fed4b2a858eb820bf33625f22. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USA2P2411860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68c5c7a0ac3f6324fcfa9e96c37d5b5435745acce59e296a98634f588adf102d. 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/USA2P2411861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e38624cbdb94eabf26fd5f011d8bde7312e365ceb24738ee5ff52733c0ab5e1. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USA2P2235762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83468abf74ba9b0b98db28f8e578474cee4077f325709a75b43e5ab2b4c4b18f. 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/USA2P2225114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c68a6c92a8023c69370d1b27de1b8495f1c17f1e11b183bbbd4811bb3eca84c. 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/USA2P2411862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556c491a952e77415a4053c2581f6c006c55893a8e5fe10af591a7b4bc8bef5f. 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/USA2P2361145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3125e7fbb28fa2c5481a2143847f464d3a97a391ae1a8214b31d6abca9798b13. 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/USA2P2411863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78fd88f89f3449a37a5711935f6605541f520eb7e417f7666cc7fd5a8ed9bc31. 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/USA2P2411864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a3371764674334c32d626686f49e71ebe81e63d33dd70ac0090df122886718. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USA2P2411865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b0aa9fec47d970ededf366bea0a9ef403b65799717a8d44e628ed3de19c7c3. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USA2P2406506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x251b758e416425bea819b15a09d447286a2f69346855fabd59b930926fa98058. 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/USA2P2411866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3cf8e5bc926c2d16ee7ada82c332bd984cbaaa087f542d48a925190d7106089. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USA2P2411867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2512f7d5877b2e9dc978f0d4e0065c3737407eea06248e8778a8d1b17d02c558. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USHM92166981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x346e4ac744dc79a8f01ef1e8d20ba7a7af29add9afa579914a2cd19702174ec1. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/USA2P2411868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde72f7c7b1781b6063ed061dc1589b85f22f53d2da4e6436d4616608c49ac725. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZNJY2328197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe3fad0cf20011f28c1bd953c52d50178a9939355d68baba217796df64bcb254. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/MXF152100176.