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 0x08c5423c9055d0ed743475245394f1b158851b55ff9f65d52be24b57ee34f03b. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b07e38e0-66da-4d73-a044-09a9cfecd403.json and https://artists.proofprofile.net/proofs/artist/b07e38e0-66da-4d73-a044-09a9cfecd403.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 0x9fd2a78570e4e2224cf6409456120679abde7e19d4aed2a022b941823149e459. 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/DEQ121753673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced3ddb8a37db81a6b0b61cca3871462137bf72105b2fda5d2f2f7c342d98839. 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/DEQ121753674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8868a5d4d7f1b48edcce64eeba30f85b2b3b588b36cf6a5a04d3cdc1049a0557. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/DEQ121753676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2996dadc96f8fbbb9f2c6ba9e1b4eb9c5aa3d22aff10292e2c79496f456fec8. 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/DEQ121753677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c508dcfbae89aa778d1cd56a72ce9ff5b10591c4cd86ea1fd6e9caae00d45a. 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/DEQ121753678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5b6eea7c53338bdc3efa7ae1e1faecb5007137ee92f7d0b0973923d676a5817. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/DEQ121753681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65cc1bcef7e5dc037391289a12f436b1f04e73cfa0375e47b48b738488291dcb. 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/DEQ121753684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c39b09ef4cb48d2968ab6cc20f34a88f11da0219edc23bfcc4bf5dad61f69b. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DEQ121753685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x199f49e32ed275c9c210d138438993b033dc06848e4a4d83e74300cfd4f390fc. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEQ121753686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294a3d827401b549b8eb71d30d86721a694b58a94372560c9291fdad9e07e1cf. 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/DEQ121753687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0abb00f9372f4a18088d56582123d05029758fc4a65535a5f4cc1c0b1c490444. 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/DEQ121753689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc80470be5948c0fc94bc0e55d5298e637df91d448fba16911a35b39cdfbfcd8c. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DEQ121753691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e2f776087747a5b1bf5bc7fc5e9c466fad03deb569201b0265a45c852afaa24. 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/DEQ121753692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfbffc1c6966ac4a9a1737b97187d52c454ba1ee30408ec08b30f675f4ed181b. 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/DEQ121753693.
Vergiss das nicht - A.i.d.S. EP Bonustrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe86f771f16dcd887e4b4e90e44fcd4f2194b9398a3b1bc699022e05ab3c8a846. 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/DEQ121753694.
Zurück zu einfach - A.i.d.S. EP Bonustrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aabaa13a6b0795612c4ba9d551e228e3204b69fc526c03b2032939744e38a2b. 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/DEQ121753695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb06cfcc1b585a5008cdf229e1580abfd16f467512f8a51cd5587ac49b1b09927. 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/DEQ121753696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c36dc356a3b104a306d89779a11b3da322d06048bb8333947bea9405ea4406. 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/DEQ121753697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd9fa0d20aaae4c57050ad62c09df32e7a68fa5f594cc914c9518faf5783e3f2. 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/DEZC62437789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aec504e4aae43e305db59c0994682bbd5090a2a7a07f617b160522c96552eb0. 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/DEZC62437787.
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 0xbd980ec0770da9fc0e77002869cd4b31d11d18dc58bb4c49251eb6a9ad9ad650. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/DEZC62437791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd69db87d224edb19fc59f05a9b4c051ba1669b82b94c386909bf5762e0b52650. 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/DEZC62437793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c22a519d112b8f8a2263fe386580820d3025acbe86eb2dbc1403c95989c4d3f. 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/DELJ81957176.