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 0xff663a56979016de21b0e2a779969f67232e8fc524ac9f5d21602f3d1fda38ec. Chain 2 (Bitcoin): anchored in block 953736 (2026-06-15T03:21:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/97d651fa-3c75-4e9a-9842-1f599acc1ef5.json and https://artists.proofprofile.net/proofs/artist/97d651fa-3c75-4e9a-9842-1f599acc1ef5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Feiern & Loben 1 - Singt ein Lied von Gott
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 0xf123199e181e724c4b63fd627a8bdbd4eb98357fbcbc7d6521b85ab8f39231e6. 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/DEA552400156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c54c39d95e1e42a92e2425e4f7a34c4e8b472d88a2940aa9fdb431673dcfce9. 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/DEA550330281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48635c131f21425d82cfdfe3f799ea4e733c4f770d1729fd82cb44d83623a481. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DEA550306341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x308efb0481079d893f9008610ba081487bfa20f12d4fd9be9bc08841b0f76e25. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/DEA552400146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5256b91fd907d00ce7322c94ca6aaa00c660ecfdb06468dd50a06101d62bfb0. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DEA559716680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefb79d600597096c3459abd4b3af67d6dda03bd58ee64e0577cc87946652036d. 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/DEA550407362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe170a61587b47fa95f8bd69dc80a7f20bc2ede1ac3279e8c611031b774db3a82. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/DEA550407365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21cebaac22ffb724dd72025a23662ac0c440a01260bb85e6d7e17e33b56d1919. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/DEA559922698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5003d5f76a8103b6cdc77719dcdfb072c07cc3bc922adb7627b46c168816ed8d. 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/DEA550004532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f97e793433b5f50c5423aaf8cd4c0018853497b705ae291319da6767613bb88. 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/DEA559216861.
Feiern & Loben 5 - Einladung zum Glauben
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672d02f41c5545569891f7f9cb6f7c350251a20e82cf959905b73623e9f5fe0b. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DEA550507988.
Wenn unser Glaube nicht mehr als ein Standpunkt ist
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12fe8d328c78efe9cb92090916d5691f357d71691d89d16bf36253727e1da8b2. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/DEA550507989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ae238b1b67fc9e17eaa56f80c9cfd2c1ba1254d331cdd8c7270a4d2f2b34887. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/DEA559522621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7e7019a90102a73faa514508839d524c877968e0c7ea02f34f4948343839f16. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/DEA550613011.
Feiern & Loben 6 - Zusammen in Jesu Namen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7935fa57f83ed1b69ab407e307d55f7cdb14e2072114a9d3b3759d065a2cef3. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEA550511154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5938f8c4d9f487b6e2b3369525ea2b018b4c8ef780fa18c52b1c680d6baab053. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DEA550511155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe36b42f30efa80bd6982c80077cf777aa1f3c5f7d0c6d67dbd51f12c9a2d50ef. 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/DEA550511166.