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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c42995f54c8bf9c420603b72bebecb5d1ef635b9591d0f3dbb3f73f8bf9f93. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/435e0e06-856a-46de-abec-f2b87c58fef8.json and https://artists.proofprofile.net/proofs/artist/435e0e06-856a-46de-abec-f2b87c58fef8.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f71bf70ad8413954beeb9559e64c2735ebd0bef56f25763964e470d13d3e4b8. 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/DEU672101264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93dade86718b185f8e245f1ce769ab916470baf7840b1b099256506af3af8ee7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEU672101265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993a128ffe04e6cb7eee3282e9718a6c413be4328b585e29e65f34803d877721. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEU672101269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc00d0552bcde09e8707d44514c6036b0601c0d543f21a6e2624403838ce7921. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEU672101272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e18ca1d8d5104c8b01dea0ba9b79a0486d014eccb54c14eb2cd964c3a95978c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEU672101273.
Flieg Kleine Taube, Flieg ... - Album Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad192c142e07174fdc34a16c0b87e395ec5854509c88ac34d459a17d564385b2. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/DEU672101263.
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 0x3c3a82d0d324d9cd97f4998e0c9bd05a1453bbf89675fe2c50b0cdbcdf6f6301. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/DEU672101266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d86b4be9cf76a0885320d3549c3070f15e7e571623574ce1aaaf19c8ff2d3fc. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/DEU672101267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x447121cc5bf72fc02133e9d96e36be7f49eb0174f03467aa4d48aec3e26af716. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/DEU672101268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c13f10d7eb5b7a38fb3a7d5876206070e8b65883d228e0285272edea1aeb72. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/DEU672101270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55303d04ae0e20808d820fae0d78a2ca10bf2a1bb79501af48bb9254543a26ff. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/DEU672101271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e6cb195883b90983931eb02d774ec74a1608082b230645ad74840d715c71d10. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/DEU672101274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c0ccf1ae126bd1dce6d19a511d350c58df2ad0107ceec6e59f47e4ac46bbce8. 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/DEU672100461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba9e9e93d62c1ec12f86ec16c4a2204baa2ba3561142e2d67924d55a2cabcf1. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEU672100462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b35ffe1ed85af88dc406ad9fa75e3ab199e457792e70d5aca2daeefc86b3a3. 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/DECH60911815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x471581c8f3fb67170e52283a98a8af1262b7e36ff9e5088f222f1c0a890d8f41. 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/DECH60911817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b2be62469f2744cb5df6c6789eaec49e7ebf18abb95566ba35e7ef03574aa2f. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/DECH60911816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xace84fcd956c8494efa3e9124026e0378eb21a4d7f363005441f106b3020b4bd. 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/DECH60911193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc167c6332ed7a04825bc6ec90a7090388c9c71f7336ef55764d2312aea2751b. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/DECH60911194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc929cafc5e2b7eb942797d5e9cf96e3e1dfa1a993e961effb448433a08a70b. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DECH60911192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ede5305a3b06c0177c11876847bdedca6af577d4e3c28278a1c71d573e241c2. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/DECH60911195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfea3c882a4ffa37e2989943fd0298d79ff1930ba3653f2cc4e8f4878dd06c19. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DECH60911182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ba0682a9415a36ce44fc895cc756a22b30f933274183ebc796b03e4b16a769. 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/DECH60911183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eb48b15ef28914e7df302f70e2307eb779b9eaa245cf5530c430c8bbb6b30c0. 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/DECH60911184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1fae7add6d88acfa3b9b4f1d341c203d5bed8b6b2fa4d291b95a68bbb9d6cc7. 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/DEY470702077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7648c3a7b6412c775e71c23bef1defeda75d33f83dd9736eb4a487873c37309b. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/DEY470702076.
Kosmonautentraeume - Marlose Minikombikosmonauten Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db59068e9df3162c91e84b64c1be6cf756f11f3271b8682e03db55347c25343. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/DECH61000416.