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 0x38a715e648241a81975d6902312ca2c1f012b512d335275e41d599c6d7255fb1. 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/38101613-1957-4353-9c8b-a97065148c8b.json and https://artists.proofprofile.net/proofs/artist/38101613-1957-4353-9c8b-a97065148c8b.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 0xb2e262a47a52248294d17ba2108284cf8afc66d35014845f61eddfeb49daae79. 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/DEZC62190349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a48712cdcf4c72300ac51d92f9757d5c45cd2c71f91c80aedbeb1aab39ca362. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/DEZC62121214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad8d8727e343fbf2171f27c175ddf832137699ad83d52022a1225c467bae83d8. 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/DEZC62280763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca4235238e37141c5a0b227c9f51276f576aa0f5aa5db114b5ba47abc2e62cdb. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/CH7812542742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e37703f66962face6a74eb35de3dba27e5aa2c10153061a00dd8e894915bac1. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/CH7812542743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5638169298b3cbf0203fa83106a757ca9f6ee9fc9220c2e5b1774e7f6933bdab. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/CH7812542744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x876439ec28a854ea60da2caae1a0bbb64dcc5b55fbce342a28aa8281edf24731. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/CH7812542745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x068377da932f78542d4b26f9eb944b64aebe05d02893aabd9fcff5e962369c3e. 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/DEKF22401292.
RLR2 - Runde 3 - Tag 5: Wenn Welten kollidieren
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57a8a33ce90a381ec93aa701b5a9c2b48e6b79ae400bd63900541b5d4da5c675. 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/DEKF22401933.
Allô (feat. Ego, GORGY, Cave 110 & Elisa Loah)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee4c5b24b5033968c7069209d6ed6de77bd77b53e31e25fefffda867ed320343. 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/DEKF22401796.
big moves (feat. TANO77, VS Mosquito, GORGY, Mocro & Silvano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72790b8317e24a7069b4b7caeb04bbcd4c1289a0fa97d1bdfa49e6d10a22e3e2. 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/DEKF22401618.
RLR2 - Runde 3 - Tag 3: Im Schatten der Karte
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa70dcf2dcc53dffbbcc4ad32179af74ebff0bad2370c31964c0adfaf4f9ed7e3. 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/DEKF22401829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c0ad099138c300dcee8c8e5cd95e1402d257edb21f0fa840c536c3f66cc9f22. 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/DEKF22401835.
RLR2 - Runde 3 - Tag 6: Ein vertrautes Echo - PT. I
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8819083411b991b83e3851a946a6cc55338da6381d300ddfbe61700175793ee4. 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/DEKF22500026.