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 0x092c778100a42ff32e80136059d7c86dd7b046c60fd6d9f28d4c5fc794f71f15. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d60aa107-dccf-4e11-8a55-67526366565a.json and https://artists.proofprofile.net/proofs/artist/d60aa107-dccf-4e11-8a55-67526366565a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Summ, Summ, Summ! - Die beliebtesten Schlaflieder
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 0xf64da8f6c1ff740fd52cb9514960c4ece078e91149a4201821ca507fa4213ac1. 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/DEH821400503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643deae2b8290ed5e17e68d65831e5e60f1dae712d3867bb094662057bfdb9d0. 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/DEH821400504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc398a88df1caefbf1c1f2a442b29a2524d293768510da5616d0370b621d9e671. 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/DEH821400505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x134facd7a56238e114f5ee038476a2492cea7d8d323b285f3a998baa6b42cd1b. 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/DEH821400506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f71149be7d4cd77cb47da2bbbacd8ec1c081339ba716fb383e26134eba34f4. 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/DEH821400507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e1921457d115abce66611959e86d70df46a2502bf931ce1b878d2719af055b. 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/DEH821400508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7404e2aab7502d638e17bcf1a9e2ea931f03ba038fe32cebc7607bed997d139. 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/DEH821400509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb97d30db8fc0ddfa3e640aea847a5091c5d5dc5d3ab9d47d49ef00bcc44b531. 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/DEH821400510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15b3f5513db80efcb8db8e8a5b6e33e5dfff13e9d3802fbe5d04f51f8e8bbce9. 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/DEH821400511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534f1d0c7524e98559b6d7a0053468cdc43f1ba1ddac17043838919699a5342d. 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/DEH821400512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b3d4f78a86fbc06610e4f3e7d402ae7e3998726fef008fbf633cd166cbd5eb8. 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/DEH821400513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44865bafcff46c0e3b97f71af8d67a78b487ffc39492eb5410239b253aea7e10. 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/DERA11200028.
Guten Abend, gute Nacht - Playback Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4aecbc056a97d9e3070d2313d2b8c13cae19da422c757fb736f5035f209f13b. 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/DEH821400514.
Alle Wolken schlafen schon (Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b98b4535496a3fb7f6dab0b9b1ae598702cf5d21c7abf441391fc21c56b6405. 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/DEH821400515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x533513cec20b089b8a9ce3d606cbe2da1dda5b4129cfcd1da03e0d0d3631e265. 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/DEH821400516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2302cc5b73488c6285e7319445f0f211a354c2430a6cb8a02fc2689d2a23472a. 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/DEH821400517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b0c40aa5c3f6e20f9be93c53012b31c7d18a637b7e244b74adc6621336f560. 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/DEH821400518.
Weißt du, wie viel Sternlein stehen - Playback Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x569eee9c00233366d2a650d81b646f8c92ffa80f66b90d53537bb441dc8482aa. 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/DEH821400519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x919ded021d5f3e016f05a534817cc8f35e1457f3976d06989c9917d4ef70a52c. 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/DEH821400520.
Hab' ich Dir heute schon gesagt? (Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5dd339933a180a6fdb16f99fb271cd1bbb003c65a48a6f2e343241cf0e83b09. 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/DEH821400521.
Guter Mond, du gehst so stille - Playback Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cea52391f06b4251f5ad68bd2a0f7c3ffa530a2b040a260ffbb4de476d07d49. 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/DEH821400522.
Im Dunkeln ist gut munkeln (Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x752966d9b095115ea7b7d49ce566b4874b71efcf715c9544625943080e32b23f. 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/DEH821400523.
Der Mond ist aufgegangen - Playback Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08daa0263b5dab7100f39368ecbc0c7ccc7273ba2589b009002b43fbd44e5e9b. 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/DEH821400524.
Schlaf ein, schlaf aus - Playback Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5276a9eb84561fd2568867c6a243d79226454bb308ed721dc3737fa6b59e6ef2. 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/DEH821400525.