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 0xf136f21dc028356ba6cccfc5254b1c614fbdc236881d0a427b1d7663a961d725. 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/5e9d9a3e-6d84-4196-b233-a75d923fbe52.json and https://artists.proofprofile.net/proofs/artist/5e9d9a3e-6d84-4196-b233-a75d923fbe52.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 0x4bbf06e1be71704210ffcd419c26e4b896f89c1f48a800f3e985addc59031e49. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/ITO0P1900142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f5d61c5e404ccee266d1d234677d906beaf85e7050b74d3e6628a781188796b. 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/ITO0P2200063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aec47c29a7942e795cb9bd75d6008bfce9a716c9dd1f3c55c8434650ef36f85. 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/ITO0P2000135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a8f3463a5036e24ab4b3b9594b94d356a1f351fac491fd5f17fe4a9542c994. 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/ITO0P2000137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaf5003098a2a25202805dc3082dc2c5b51f8fb00c227889ec27dc3ced7bc642. 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/ITO0P2000138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ceecc9472e0f9c435e67ca77433b0ffc56cac08bf64680733ff53d65a8266a. 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/ITO0P1800127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f7bfc0a5d2440a139ca4c48f3bf5faf92840c29cc5f8ce58a3374ca1be509b. 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/ITO0P1400176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d727ad698382b6cc858cf5eaff9a0ec3c2b32811a6a18703fc833c84c074919. 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/ITO0P1400177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1500d153f49d225c83a260a8c5477de952ba9ac5114f637b918eede539ec69c2. 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/ITO0P1400178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63664a8b1ef07c0ec47cf837bfb04973fe7b527453a65357fbdc1516d3ad3139. 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/ITO0P1400181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1bf7d47d700017bdd71a8510cdc9ad25c41f1163de7ad66c6e4d1e9d2bb68d5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITO0P1400184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7218673ce3415831d782ae2b064974e1370c59e0b51d032abcd07bc20574c6a3. 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/ITO0P1400185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea3bf0c69f446a7c529688239dad1abc03184bf1706765c3494e2c35542d71e. 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/ITO0P1000155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c8ee8b167e0b5f377a3aac7bc2848b27d4640c455b85edc4864baf16555bf1a. 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/ITO0P1000157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc37ef66256f30f3c3c38f4af1d949f75f14dbc6a8cb48632ab024d0aa83b0728. 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/ITO0P0300144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c5e6bf2c18e6020b044a9f182c1ae113b768e4aafed92a7bb5f3f0a0d3d5a0f. 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/ITO0P0300146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f83ee348e80ba16c548f33f8baf2702f479dae87cc00685f55143774e3c2002. 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/ITO0P0300148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf610ff5bc2f6221fdf3257849ef63fa486aa26727c1dd193b6407f68635a04. 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/ITO0P0300151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x161956d3f6fef960d33568fa9dc8501aa5c14b9e351c80ab2578559b6b326f4c. 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/ITO0P0300153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa43bb36eda5c9f878bd2c77e7f95ff35ef1697b1e980ee7ed30042525f0295b2. 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/ITO0P0000816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c952602469e55905149b48c022bc0846ed5b175a3a1d3947d20dabdcb26184. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITO0P0000827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e87e98e5e46983fd4fdc18e16e70b394505393218cd14e259d924643d7ce485. 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/ITO0P2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc80d3415197f60ccdba3a9a6b71b3cdedbadcf73336aeac631216bd586a7ab. 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/ITO0P2200030.
Donke De / Batucadas / African Nite Life
Gica's Dance - Reworked By The Nicola Conte Jazz Combo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c904b07b9963b5af3a4ce3a185be60968ce4ce976aad02607a36a0db364f565. 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/ITO0P0401005.