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 0x8be31f408535d0be9a22d43734956cc685f8fec76699117d09ed3e63b1dfc4d4. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3fd11bf2-db6c-4375-9743-085857381cd1.json and https://artists.proofprofile.net/proofs/artist/3fd11bf2-db6c-4375-9743-085857381cd1.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 0x95f3f23751424ab669ad829cd111e0205c9251494e3816ae76f245e42a962d52. 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/QM4TW2307288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c2fe8811376c0a108addcbeb7a7399f9faef054f05373955ced7fdce8c50537. 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/QZMEN2478613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f528e2de5256f2427e9d2b1e5dfed4b67d21f16be6edcb11db6807bfc872a1d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QMDA72469585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9cdea4bd224b2f03c16e12e613e5ee51391f730bfb1bdb4e573c47a459fee5. 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/QMDA72469586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1497222f31efb1acc6b98ca3300086b9b12e08b986fb6b0a50445fb5a6d90e8. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QMDA72469592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca674acde11433c560b13c9a28defe8cb389b9749a6f22972ce9020dbdb91d4d. 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/QMDA72469594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5efcf69eb52ab856a68a4f665130a0035d4893a9dfac38a319e81a2949e3aac6. 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/QZHZ52218775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf86eb40d2d110fc88bbc175afca64bcd685e34c3a44f48e2548bd136c45d34a. 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/QZHZ52218777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5ee5b05eccce41a575546b0a8fe98995c4567bd978c433a487d40cdf607b759. 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/QZGLM2251719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46e607107850e09432c83a55c1ddd0f4d6dd69a5843e9c7ccf50890abcb5ba63. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USCGH2330914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0b4bea840b97c86cb9ad213efa7fac9a7b7c5921858606cecca2371a52ee557. 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/QM4TW2388262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9437a8c00b466d2836ec55f2594af31e414d1dcc26a0d5a2b584a9d577493e5e. 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/QMFMF2235303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe85e576708f9a960ff56e76e6961ae99fd1ed43cd84125d1c6af1df257619c4. 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/QMDA62252575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa057fba87707b8f77f8e4d41d62952d6ef263fb68f2f779769d57647da7b97f. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZTBC2414812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x400bc6a1205f903ec195a3b9b648a0f66fbda2325e76fcb206aff95ee27b62c4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM6N22509481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c2fe8811376c0a108addcbeb7a7399f9faef054f05373955ced7fdce8c50537. 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/QZMEN2478613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3728b022a7e8b1350e76723fd420e973bf913107fd9a713d6071a69cbc20d9a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM7282329172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x400bc6a1205f903ec195a3b9b648a0f66fbda2325e76fcb206aff95ee27b62c4. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QM6N22509481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9079c1ca71f370c11168ed2994e59390a70ee727df6685d638476ace38fa693f. 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/QM6N22509720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc26880d0a772f269e62e638089e16932a23d8d9934e57a6ee35c8a4197294206. 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/QM6N22509740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x685accfe23a108fee7179fa8e998f364f3df5bf53b3ba25723b119c1372c930e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SE6XY2560418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed23c5db680c0f66555b772fa21da9fd56bdaf012fe0aacb52aedb78cadb7f5. 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/QZNWQ2581939.