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 0xa8d0493e69ea53d3d3bf8a92d142a1ea61f88c93cbec9a0da10c46724c515139. 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/b3f52093-4c56-4517-8188-8d2158c7519e.json and https://artists.proofprofile.net/proofs/artist/b3f52093-4c56-4517-8188-8d2158c7519e.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 0x05d81f2e584e6b154ea0a25536b020d94ac58dfadee20700117ff124721d3545. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/DEUM72201079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d22d5d4fd23df4bc690b59efa78d7fed4a2f5c62b464005d434365911af0cdd. 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/DEQ321500389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d1fbaecdf764654dbbf9fd936222a15f3ed1fe64e2cfe569deb7adcdeb92fc1. 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/SE3OH1512800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d74ae81a8c1bb50739fc6408088c9ed5fabd51017c8ddf46bcb5d635076226e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DENL42200805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14be6be321c27f717408345229d7b67850dcae04a6057420615c1c2153d48331. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/SE3OH1615003.
Die verrücktesten Abenteuer des schönsten Mann im Raum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c333c89346fcd84f60a89b7f285717334a6b01abcf5d0ccf385bc14248eb9e5. 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/QM4TX2475089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59bf7bb051bed6e3197f607d7c3c670708c4d7ec8152c701bbabc3f5cf12c650. 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/DEQ022292041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59bf7bb051bed6e3197f607d7c3c670708c4d7ec8152c701bbabc3f5cf12c650. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/DEQ022292041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59bf7bb051bed6e3197f607d7c3c670708c4d7ec8152c701bbabc3f5cf12c650. 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/DEQ022292041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59bf7bb051bed6e3197f607d7c3c670708c4d7ec8152c701bbabc3f5cf12c650. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/DEQ022292041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a4dc3c229951b8b65c865285bee85ecfcde16a388a32776a3b704c21c82c800. 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/QMFMG2313984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a4dc3c229951b8b65c865285bee85ecfcde16a388a32776a3b704c21c82c800. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/QMFMG2313984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5675e7a8473c2ef7234025a365ad88ece8711fe872bbfce69d7264b000a99d4. 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/CH7812357779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b8b6daaf4fbf4b5ea5f83712cdb46f084cce2208a2a5db0135630a462716f20. 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/DEUM72119735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01bdc8bf6831642fa9463cd310cffa64a3f6a884e2eef7597a2e9252ea9ebab9. 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/DEZC62355219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35108be1e4e28294cce936d8a2279ecd944126a5ca4f88e2a03a457c74290f0b. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/DEZC62357953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c88f26accb36faa4c6b668812a19b808048efbdbad6cab4c90c1c1f35eb4dfb. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/DEZC62365649.