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 0xa32713bceac0ac9750b01429d6e51f39839b5832ebbb20419ce0a197eca9bb22. 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/0d60d41a-279c-4b4d-97fa-c88313d6686a.json and https://artists.proofprofile.net/proofs/artist/0d60d41a-279c-4b4d-97fa-c88313d6686a.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 0x298300d37f28d323254a66809ee5017528776d1352d76be43f795718f8768556. 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/DK4YA2303501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x600042e4df709a5edc9267d2e3f7958182ca80f7f8db2746230efd00845b9168. 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/USA2P2401237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae1baa674778854e50a4436b247b647ec56515f6428fce2bac98946d8c99fd3. 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/DKAZA2200227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bcb9c1c585983fabe0d639c9005fc0b7263397ea16b3b7401745f5c7ed104ca. 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/SE3AA2000006.
Eurodancer - Alex D'Rosso & Refeci Remake
Eurodancer (Alex D'Rosso & Refeci Remake)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72cb5f00c6f491b0aeae88462137c2ecfb82849f47587d37d3a284c758f48d1f. 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/QM7282024385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc101079a9c9ee2a2908a0e03c4a3b1114685b80439239ae9797b319a19ec13d2. 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/DK4YA2196001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a79b45c37ba3cec8372aab61204a1a2cc59c765f7f13331143d4800a71e7adc. 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/FR9W12231324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60755a90bfb3606ecc42039c316329b980305db28ff6657d436086e041e28a09. 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/USTCF1070517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50711860dde099a4521df5a19628b822ac8ead854032cedd2819f935a2dd927d. 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/SE6SA2064435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e0bffc518a3e587a95f2c5afb2673d9ce6e1fbab5abf287aef42872a9b9c11a. 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/DEHK92108994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf82a555b60534b456a07eda85a2b4ee9751dc348d0be5f4167152b12e01ea672. 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/QZTAW2303486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2145eac50ce5b689b018457baf05592dfb27ded7e94b0f1c7dd22a9671b73afc. 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/FR9W12237365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7ab4c246228d32e73c89fccbe842a9df3928ec84512c7a418fb48333875b650. 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/USA2P2402269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa042e90b451a9f9e0163a18fabd0bbd1941d1f15865d1e45380dccc5ae0fc278. 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/GB2LD2410485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea4142f60477f831be5dcb9998b86634e3a9099fd2d93bf801a4b3880d203720. 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/USA2P2512774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e5276a8e685c1a1cf34d5309a7dfd73b4e61f5d9b091d01bd80236c7d8ddd0. 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/SE5SK2306801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4df854ad6ee3dc3938573732fc276d391f2fff0093bedf7894f2080f93090b97. 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/FR9W12210383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e1e62bbea87adbd8cb935727e5fbacf2f15b13a75c304d30d1697f63554f902. 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/NLZ542101939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5ae6e4aed85248ac1e1c08357faa85c0152d561670a98061edca821a5eac549. 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/SE6QE2094042.