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 0x2bb217ded76c96b1407b2b65699c0ef89baf95087d497e12e2a343fbe5515991. Chain 2 (Bitcoin): anchored in block 954134 (2026-06-17T19:41:05Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7d4119c2-748d-41a3-8cf5-c54b79c1bd7a.json and https://artists.proofprofile.net/proofs/artist/7d4119c2-748d-41a3-8cf5-c54b79c1bd7a.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 0x6c01173a75caeb6a5e602c7e1ce983f8747c949d61147916bbe793d176585b38. 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/BEN582100045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb6ca240aa486324a6dced865af9ff4148c43dcf1f3c424d590f031fe527372. 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/TCAEQ2010291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bbf2c49f2bfb6a0faff65421da5b29e1fbe7f6f58c432b15418423128827131. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/DERH81807701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ddcdf55a172156f33d3cc55e6d89b74a889d41ae7de10bb541bb4ed2ee05b74. 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/DEF078302020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ccdb6a48062a9bf74a04d2be2a3fd48fd206aaf5f177eeaa001cc5c256aa4b8. 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/BEC019900362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x143375effbeeb4d4d6b9faacb10d66a7d56f23e2e2c2321f9fc180f947d383b4. 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/BEN582100047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1d1d9ee129c8990266c0dd1a3de6703985aa80aaf78ee05d1467f15226c36f. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/FR9W11708786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4782a95b14b689913eb251e08779d96f56415a749f017dfa159e7ef1f5f9c7b. 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/NLCK41061873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b74ec3fbf13aee3d34ee2e4fb8112ebeb3f87bc182bbfce9d2bf089c990c10b. 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/NLCK41060818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c45cd7c22924dd8ce7bd10ee8b7425abfae098780a769eb051bcc097f6e2440. 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/DEWN71700228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8c99ae009fae9a2dfd456ee90280b7365de3d2a27ef2d2e5df7ff0a15ae0e19. 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/GBKQU1849286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaa0c865f108894f962d078d42543634140dc76a96eac3d4356d51d75f0526c7. 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/GBKQU1800947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c3a96484886258f63ce08bc4534dbb21aaa492d23e8db80390385ad2c45bd0. 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/DE1I52300013.
Poolside Ibiza 2018 Mixed By Moullinex & Xinobi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1d9caafac529f0df177204948066307f91ea14e7109bfebdc93369b7262fce8. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/DEG931850750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa62202d0d53a593f36dae3264a66c46eab220a4e735a32cc641e6a803fb77a63. 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/US4GE1700051.