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 0x1a21148b67266dcba26c44dbb2a9834ae66dc1a3c55c8b9df95f2ab51b0b9181. 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/072add0c-c12b-420d-af5f-5fe01afa3c51.json and https://artists.proofprofile.net/proofs/artist/072add0c-c12b-420d-af5f-5fe01afa3c51.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 0xe99591bddbde377415b54e9f808777ce963df2954e8460f5cf18459912d4e805. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USV351333147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a125956f2a8190c68c712370a33b3eb9e535d141e7c5674a9290ac755eb800a. 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/IL5841831342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a2cf4c724012e8eb9e0a3b81812d7b866105e8853f0d9200924d569f244fb4. 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/IL5841822004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e34cf400028e12f963e2884f553848104fed8fbf01b0a997fc9f4f053a96927. 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/IL5841823144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7fdbc881509a36bf7efc44d475b3f9e16837ccd4ff3621bca89d32dc835a28a. 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/IL5841923613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fefbd15e5cedf21b75eccd996ff972b747549e3aca63325c060d8f8f2e15773. 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/IL5841720416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e5ef056b5e25e6f512392678b20036a1c7a585cc32c737707ea8fc66d0cbd47. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/IL5841923612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe99591bddbde377415b54e9f808777ce963df2954e8460f5cf18459912d4e805. 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/USV351333147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x681842d41a987ffb16e345f5e0f912874b2222c4bef98e34e38fe76859670dcb. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QMDA61363924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d1d395388a2e9701aa5f4fd1eb044daa201182e7f4932a44fa054a17dcf46f. 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/IL5841719309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb359350a8a68b029b895b96abadce9589d9ae86975f0e11a3a3225ce43b90f99. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/IL5841923615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x658b6868a03b2315757c19ddd7239003a2099d079d6202e6b7f9ce0e621ff1bb. 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/IL5841923614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccba9248526a177de778c35d8ec171e6bde0de3c4eae949be3e9ec81cb33d583. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/IL5842131399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f72fc2ad666996a63ad7277ddaa33db6e4cb9cffb3b26b65ae194ef370b3c3. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/IL5842133526.
עושה מסיבות (איך היא אוהבת) - [Yinon Yahel & Mor Avrahami Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x600e76fdc247af86877f5cb575a96abd3127f14f42f0c4e0ff4fb52d70355af4. 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/IL5842134211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb1e3169c7f021710d87d756d5610d383cada6fe861abf2e4953bd7b68e9355. 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/IL5842031067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c629ddb579a80dc51918d7dda44f36e733677487303c5c85e94d8d674c2be6. 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/IL1021911053.