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 0xdf80398ad869f8e23628a494bd9d85a014780193c7701c43ea3cdaff56707dcf. 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/32b05c91-05de-4b1c-9095-26c4a15ffa01.json and https://artists.proofprofile.net/proofs/artist/32b05c91-05de-4b1c-9095-26c4a15ffa01.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Deutsche Fratze - „20 Jahre Deutsche Fratze Edition"
Handypunk - „20 Jahre Deutsche Fratze Edition"
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 0x29ac751b47752911f670b052300a2ff2ec45a254d5deaa116dd9453ddd49ddc8. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/FR10S1636067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cf75c3012cfaa88ba7bff6f4823e1c5c7123d07886f38d56b9e27db2f7e9397. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/FRX201711697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e212bda500641e9bd0b4af318d77e64f23772b315f68f14470da35b3a940813. 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/FRX201711698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b0a4403c364a05be559da7d6e5ee68eccdefe3e6d0f62e16b7ea8005484d51. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/FRX201711704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad17e82a014d7a758e699815c9d225caa32d02baec9c9a4a9a24cb966690e17. 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/FRX201711705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b79a975a63ee1c838f1e5aadb654519c275198b2d230c1678d3622eb2381b3. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/FRX201711706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x189039043e306766a6a5472f0d8c7c48a96f2da9bc7a9fa448e8960278501138. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/GRCB11403278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d8dc20bec452f3da340771205f7cf15c9916be8e73637a241a4a633138b50e7. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GRCB11403308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36ef8f88c944f532c67d2657e54440861678d0814637b0f01a0954a3536c0654. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/GRCB11403508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66ca0e31d8d18bd80ca7f095b2a94ff1c54e2410f905e5f00cb675e1098d5e29. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/GRCB11403555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98869e6ab738c3e7f03ce963c1c56cb71cb92eac2bfbc9ea82e0769e6e4da681. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:55:24Z), 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/GRCB11403761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9587b7c8d8af3429e5a489365f5dc3bd7d18fdeef058af3c61d8fe4303ef2f72. 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/GRCB11403763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e9930e9860baf865558e3b4d188f1e5d9d1a198deb92454f13d7d002696fb23. 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/GRCB11403764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfddc34b110c0e80b219c156ab21da0395efeb89fa47abf9d939ca2dd7e35ec2. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:58:57Z), 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/GRCB11403766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x897e5cf99e33145498c2d507b233b030856d4eba8ef524286347fdf4e8f34512. 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/GRCB11403667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11f5312ae302cadb693552506c1cfcafab946fd47d4ba979b04d4b34324ffd74. 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/GRCB11403767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a82370d6ac0c6d99f4dbf858fd166a3c60cf5b0431a9639271ae6312877091e. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GRCB12200494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36824aade1330776ac708eb43d6ce1f626db1df04c961f3c9ac922ccfeff2264. 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/GRCB12200825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f0c2da64875b50217e0a98a1eb95429b8a2918dbfcbaf3e102110c8e4bd36d3. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/GRCB12300071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x287d360b56cb0cb45c946f10a8ac1ffcdfab194b5b601f7c2aacabc71c9b91df. 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/GRCB12300072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db95669c2b997597147cae8aff301300cb61a129ccb958d9518387d66f72063. 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/GRCB12300128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb116f1f73cec1aa2f8df1942bae1473800f0da3b5653324c9586fcb9fcc34a6c. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:14:09Z), 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/GRCB12300261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b65e21995294178fa64aa54da2b2e8b81a01443316da33726c355c77069f026. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:38:46Z), 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/GRCB12300314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e71c3f417a8de893c3d4855d118deb3670953031728ec2f3ebf1b2a03e16b95. 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/GRCB12300382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91d045a11f659621c83509f6346d0ae09813369ff85dc6c1c206c9d967fa19f1. 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/GRCB12400039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb584f4f9fe36a9ad18b9e7be879943b65d5a324455c45af9b6bb53ae1e69a739. 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/GRCB12400040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75de0c109ea52e6da9127b21784fe26cabdde99ac7464f830f8b4d4313cfc516. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/GRCB12400087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e5cf7108e565ec99af205b316fa48bb76e352d5e38bfc264443ed142b0e17d6. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:08:53Z), 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/GRCB12400091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db608fd4a874ad2067e78bb9055085286bf9df31c3847a59bcc994d85db8a62. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/GRCB12400123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc988e15c6896f9e429f7888135b2e7c24439dc991583cc61f441fce5e51999cf. 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/GRCB12400126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66601975ec5ee6338e68685aa9329d04faf75370cb357e08fdb89ca56038f576. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GRCB12400267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb41a41ed7d613948d2871faa1e7ea0a66f9ed22063de2bba1807433f43c965. 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/GRCB12400269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d014922a52f4b19d60de1aa0ddcba5471ea59008412f62f64ef68ffc4ec7878. 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/GRCB12400280.