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 0x8d84d62dd04c6e9617dfb6d0d57de713dd41897e174ca01087e7c23420ac8766. 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/9e7601ef-3af8-4322-adcb-c772cf46b051.json and https://artists.proofprofile.net/proofs/artist/9e7601ef-3af8-4322-adcb-c772cf46b051.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 0xe2e59147aef0e5f010b48df183ee5589553d4fc543a4c7568b359fa29babc25d. 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/DECE72001801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x097b87ccb586b024dc348ca0ad2befc092853ff898118e9faa769e05df19f3ff. 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/DECE72001800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e59147aef0e5f010b48df183ee5589553d4fc543a4c7568b359fa29babc25d. 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/DECE72001801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x561b6527f465ec875bb582b7e3bff9a9cc42c406f1ea15744604570ef8a273a7. 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/DECE72001802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27fb0283195253d69736d9c832a02e45d8753e5629f712d521bd46af3fd77f79. 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/DECE72000983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x261399ea13dc0a165df23a2f3ff964c33bcf3cfaafeca7a92a5f315ad52f52cf. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DECE72001803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc749b2a6df02b4e73b9adfedac10c5c92b1c3c0b7635a82678180c7327554fa7. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/DECE72001799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe73777eeae4cadeb93d730046d6b9ade1d8e0eeae9a310c8766408a3ec674964. 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/DECE72106316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x919d0c4cb682c735c3564d50e935855ef2577dc0073658b3db0bd5a589edbe87. 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/DECE72201132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d63de0fea1ab29f229ebebf234ce7b3723bdfd3ef5ca17a6c50ea48560f041a. 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/DE1CZ2200119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9112a723ea5097c08f766178fbc80901115e5438608abcad706139218f29992e. 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/DEQ022116397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0223da801be830520c92bd9368b41db678e37ebf79206abd9e8b1c709ee1c805. 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/DEQ022116401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae81acdab44e5a0dfe1efab3667bb4dcfbcd4d5ddc54eb639c9c5f4cd10ddf12. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DECE72100082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ee4f8232c150572a0a0a23f44a02fed46448395338029f61918599be2c496b6. 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/DECE72100939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8471ec800afcab58630b3c0151932e709e0c31962c1bca44366f5e08b6625e10. 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/DEZC62131135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a5c44ba40bc6c6fc99580109d2711685c1eae2bd69dad140f1862637a42058d. 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/PLC062506915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab724e2867af54b002a4d87a5612418b36f6707bb15ca3e2a74df26f9fee686a. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/CH7812360843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24904500d5c5aff645aed5cc524c091fe4aa4447a546b6a14fb755e689034e94. Chain 2 (Bitcoin): anchored in block 957057 (2026-07-21T20:41:44Z), 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/DECE72106475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f8d21355ff27da261541c911571faca656de81edd3d08a2a8911c762d2b85a6. 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/DECE72106476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc867d4da944c475557467e0880535476ccc0e8be6bdecd0e9c7512a8d2ce05. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/DECE72201779.