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 0x4d34daf2cacaccfe0c2d6a7fd3b701521d9861f3524732721402e50a26ef3292. 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/34669567-c655-46ce-9235-8f5fd8e76869.json and https://artists.proofprofile.net/proofs/artist/34669567-c655-46ce-9235-8f5fd8e76869.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 0x80ba18ac035b95ab9e9f8b6d6e0fbd413badc6112b9a27a56a4b3ffa7a3ce741. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/DEC610801034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7090263b7b8102014f877c003998a11f555cd512cc2929f702529229acad5321. 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/DEZ040801526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0529cf3b47934baec662e76da7596eb624414b6ea0dcb29909c119398f9a7324. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/DEC610801038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bd08cff4fbc604ed820006760b22452fa1c5c7ba8ec9da5fa35a6f82431702b. 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/DEC610801041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad45e5adc7bf22d43e069ea2f3553266218aa765dde9ff8ed1f3f40fab3a7405. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/DEZ040701227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e628507d4972d284ef1c3b91cd1ddf00d591520e7ab3454e0eaa99ad3fc5d6. 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/DEQ121113158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb9cb1d693d6d4d3870e12a6c03cc809c6f0066c5d6a6ab45133834a86d2c453. 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/DEQ121113163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73cf7203bedae2aa6e7a16304e0b0fe489a1aaedfe9cd185c636de8d08d824af. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T02:17:57Z), 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/DEE531302819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d4b774257fe3b52f7ee363107da1179f96931f99c5c0eb676c075953528b646. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/DEE531302820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa794fa1d91adf30e65162c552035f6c9dce8b66028be3201341342fe990ef24. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/DEE531302821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf211204238fab85618dd104c83c4d3ef27815c701617cf6447b095aef312ffc. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/DEE531302825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x858c545f21245cf1db7bbee311db8b29ccde1337b85443f50a571bf41b32aad3. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/DEE531302810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d4b774257fe3b52f7ee363107da1179f96931f99c5c0eb676c075953528b646. 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/DEE531302820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2b4409570a71519a77a9170e5e0a440f9ca97f519290d6c33a44583accfe59f. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/DEE531302822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d2109d880c1836fdd475633d80ef6f4e6c72bee01600026d9b9424bc037a252. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/DESJ42000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9063eb1d55869bbed808994b06da6bcacdbb2c0332f7396f2b43bab6b024fc71. 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/DESJ42000001.
Lieben ohne Leiden (Cuore grande grande)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf652b87550cdd1b671da5767696f99978da056b7e13979bd1d5a8730a91cae9a. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/DEVB62200341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb405f66ead3a96a31bc8c84e4484acd92ff4dc0ad1d78df4c58b00e3265a6dd. 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/DEVB62200368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d4dbaed45c3da8e3f03cdc7040d140dd4b927b88336cedb551605a3cc998042. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/DEVB62200395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x600f4e432e0f2f3b8c5e26738344ad7b8cd093fa53d234d6676276c155112dc1. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/DEVB62300417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6676dfe328a250de22c5afb5e14bd3ed156f5cd23379904a6611ea37feddef0a. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/DEVB62300434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x608989767c592848595b124251f4a0764f786bdcc91c67837e7267303b3364c2. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/DEVB62400537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d43e84eb830719c058bb191a5af2ad3e48e6d0ad05ff0341fd10399c3040f2. 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/DEVB62500585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34487c64203ace1e52c97a0455b82f74dc4ab87a5eef8279e0fb10cea188c0f3. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/DEVB62100323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c58d45ab613b954cd26f26540697fb476b715a4a4f6288a451d98891d3664e. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/DEVB62500589.
Perché (Du fehlst - Italienische Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1292c93958b5791723229cf16d0259860a825715693e7f5a426d3d102ee6a9c. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/DEVB62500591.
Die Neue Hitparade - Die Schlager Party Der Megastars
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7ecdc4ebbe4ee27d0c9378ef20e68bed0f02b0ef1dd0afcd8abe1d81f41102c. 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/DEC610900364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d818a6f4b02887694301aab4fb1ef8f905faef9ff499e6f7e455421f475e5e. 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/DEC610801033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad45e5adc7bf22d43e069ea2f3553266218aa765dde9ff8ed1f3f40fab3a7405. Chain 2 (Bitcoin): anchored in block 960349 (2026-07-31T05:23:41Z), 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/DEZ040701227.