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 0x2437674dde0fe06e72f05069b788a45e0fe0c6f47a53a247b526d1e4693321a1. 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/f41dd24e-7147-48b3-a79b-1393cb661b34.json and https://artists.proofprofile.net/proofs/artist/f41dd24e-7147-48b3-a79b-1393cb661b34.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 0x2e942e8d4d348b2d8a2d1d49befc178063696fd9da2ccbfc640e3f7f3354450d. 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/QZDA41855086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a50b23db927b102557a0085f6831423e4e6bed863302ccbe7ca43d9d649b5a. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T16:46:31Z), 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/QZDA41855087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c919fe666f038e829bd79f7b248dc999f19dde4008c36d9af493752bc95ddd0. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZDA41855089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda2149a1415855f4f9462fe0f6bde854c2b4e10ea470b30b95e3d14d94c337d. 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/QZDA41855090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8b5f3dac3d2c5c6f9d13ebb4469aa08a72b4cf9a7b757291a17bf7670578673. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/QZDA41855093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3628cef6614793388abb11f9cca8935304b8e6e9e7c1666d22bdea92c22916e. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZDA41848698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85318996230e018203d17c1b6d2d518fb051cfe7a84ffeb12d7c395c00d1143e. 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/QZDA41848699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f32f0605dd15f3833a670dac01a0eda719c4cc9919b224fe0dd3d362edaacf1. 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/QZDA41848700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb5640a52d137510cfceec3c840caf90273c7755d3141c8ffb0bf42654df502. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/QZDA41853953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14ea53b69984718e5b94f3ef52b85dc33a375d3cc8d99ffb9d402fe475e16088. 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/QZDA41853954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e5f9af73560f26c631808e5573a7187c86c5300db1dc29a473488035698f37. 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/QZDA41853956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc901bfa906ac09dd0c73d86bd3f444fc0333437bdb5b143fe97ff11ee30e9fba. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QZDA41853958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3fe038e7af879db5fded85e43050eea55ef9fb26714445d10473df76199b012. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/QZDA41853960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe5de9ad4bc59a72990ebc0a0d6d89842337fed39b4fd3fcd0f53c43ae89918. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/QZDA41851849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7bc3fd449fb10b08838306627f79868e4da4dec3022d53ead5d3afc40518fe. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZDA41849584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81cd8dd7634e066cf4e4e92cc8cf7345451505092eca6b815a14dcb9c0e951d1. 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/QZDA41849585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd10db4195693de381416fbdc680ee2f4ca9b0221f997c6f10e035b78bb621caf. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/QZDA41847428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1595b424216337acf26d0aa951651873729468556d5ab580b81e6ca5a1fc259d. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/QZDA41847429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ff92f6c7922c5cc92b8e8188b4bf1241cc200172cceddcaf98e0196dc6e449. 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/QZDA41847430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f03085648431f4f0471806bb17cfcea877cc737f66e0c5f5ea0e43e228cb64c. 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/QZDA41847431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x090d5579274da18fbd8eb61b2e857ecd66a41936a35a46ab21eb5be0a55db9cf. 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/QZDA41847432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc72c72d661fc8ec705b7b2512ccbd33d7715d276945b53dc206575b07dfc3a4c. 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/QZDA41847433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc0b6504dbf1eab4617cd0ce552a1b7afd273a55ec97b33cf39c67c535c5161. 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/QZDA41847435.
Glatzen ohne Spinnennetz / Zerronnene Träume
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb48478987ed554565688f23266a2cd9d6633f419ed0bec6e2668399010f7f665. 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/QZMER2132579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd44ee5d0e094fd368b7e2768fedea2d45a0c7ea8f2ffb59c1aca56495c0a530c. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/QZPLS2205376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d53e95e2dc1265056e39a7c59b3956a11328f6d683fa668f16a87af0f838b2. 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/QZPLS2205378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb00b5069d82ed3b40456f91e0de62f2893707e5b60ba1068cffb94e64e47f402. 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/QZPLS2205379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556e058c4c30cc5d39c7f4ce76e0995013b3fb003659393c265d0dd36e357ed3. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZPLS2205381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd56b8f4b5e8cb3aa2fce5fdb60e847a1a8f3ca1b481e616ac6b29b44c34a242e. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZPLS2205384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa04f100778a49a8e1fa4e60948ce2596fed9007c6814167c077ea355419aa154. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T20:40:29Z), 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/QZHN42422294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x963e1fae682adf529f64c3904ebfaa75ea02110e513ae4a38096f441ce47fed1. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QZHN42422295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55461bf2dd5dc570f547326e1d414d5f1dabd417656c01d40ae932dec0b92aa5. 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/QZHN42422297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3cf9a782ab833b94b0674485496cb321b18eb94b5a2e1a92679b8468ea249d3. 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/QZHN42422298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0593a52045ac695b3d5fb5c81c97251ee058463be5281128ef114c55ac6c1260. 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/QZHN42422300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x198e6fcba3795c21f8e2123bc80d37d5689feca4545ba39c4c7be2f728d99ebd. 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/QZHN42422301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38aa7d9a1a67593e4daeeab8aa2d9a561fd8ebbb170a70351dec6f6f6501a0a0. 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/QZHN42422302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc16f33fd67079049a6b87d7a74f8d0777067c01f0480b91b6bf142820209474. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZHN42422303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c296b5025661589cc8dee832018314dda85d732fab15983a59436349c86d3d. 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/QZHN42422304.