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 0x9356a15ed23813bf6437a6286850d600e785d60423e28007391ab6fb5373951e. 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/6859f7d9-252f-4bdd-906a-c0ba826c23e6.json and https://artists.proofprofile.net/proofs/artist/6859f7d9-252f-4bdd-906a-c0ba826c23e6.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 0x009f4d296be2b5d9a75e920eb6f14384d3daa61cff6f29cf23b1a043149f1757. 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/DEUE22057273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8af53272e0509c7d423701883d7f99ee870b3ba50a4e7236f7e4ffe794aeb621. 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/DEUE22057275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x805c7ba323be3c6013c188d1a9e240066ca3222a70a90629e75c1539d1153b4f. 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/DEKN60900540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49ceafeb6a3c6290cf362495ae4b3075dc66a6cdc9d358bbee78029eafa45142. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/DEKN60900544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x471d40205c87adcd0337a62a2a9bb707c02c5aa2f59af3293cd8b50285a8e463. 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/DEKN60900549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe28be2cc181bc57da9a22429a98c4a87827f151dc0024ef2bd4b4ba2d831ab86. 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/CH9251100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd910c642bfa9ecaa656ef5e3a4b2d89b4059b8e84e78521b63bdf53d57151e8. 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/CH9251100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec792f45b30601629f0ad83c5a8be5677a0fd57e8527ad25f97c4dcc27551f32. 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/CH9251100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c2b94110de0c46da9f3bd6bb95ea4eabdf2622973680ae9e8afa10a9169c789. 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/DEUE12333311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc64635e51d45c0c042d04f14682e2a0548bd4dab733e5d1d6cb3620df6e879d3. 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/GBKQU2355344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e0d916b166ea1aa3280bf6d9ca9450b7a53670d698cf81da056a20b1d7a8063. 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/AUVC02386720.
Ten Years Disco on the Dancefloor (Remade)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f30c2189ccf34c80742e05fc09ca488c0b841c95e44d724229336823c23109. 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/DEY472273417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14a2842518b7ff926afe63f51ff3044d350f53295c0f3f9d2a35d8d2f4c1ff57. 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/DEU672101614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42d07bb94b29861dbb77b26bcab8a23140b7143068cbf72410325a241537c6a5. 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/GBKQU2133755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x009f4d296be2b5d9a75e920eb6f14384d3daa61cff6f29cf23b1a043149f1757. 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/DEUE22057273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8af53272e0509c7d423701883d7f99ee870b3ba50a4e7236f7e4ffe794aeb621. 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/DEUE22057275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x651d261635ad28afb1567456411dfe39c287054857be742d11cc255610036a8a. 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/DEVU51719960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02502ff8b321adf229030e88972662f997ee0af44939aa7f09bc3c3d44a7937c. 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/DEUD91675562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96aa0525db64b556d51a2cab0540ca7fefb2fbdc4b0e8ff88c466a645973de3f. 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/DEUD91675563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224f9dd9d515ad1421d4977a43e3d552af59fd53b485fc6b3242d5c13cbdb0ca. 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/DEUD91675567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09594bf98db7aa02e57292f8361ce7ffe86f936c489af9c346b40781ac0f42cb. 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/CH9251100097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c2c2ba009bf8dc3dc36c0d5fcd8bc262844948d03b0ea785f64fc960404d00b. 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/DEAF71644548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f4247a3a64149962f7d396f288c5bc1a9f26276bbe0711492b521bc5c2733a6. 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/DEKN60900360.
Schneeweiss 14: Presented by Oliver Koletzki
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba37dde10335f43d1ec0fe711b89e3100714ac7abf6a877aa97aaf3868fa684. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEXO32235901.