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 0x3b14691c3e83b6e778b5b57943110825db5310443ec43183a165b36cb0686b44. 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/8184dc64-034e-41c4-bad7-00475e92f070.json and https://artists.proofprofile.net/proofs/artist/8184dc64-034e-41c4-bad7-00475e92f070.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 0xa0e8c046e1f47ad7387990ad591866dc0841e54ff1b08d95282d3bb2ddbcdfee. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/FR9W11305256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6fc94947b719f4f4b46bd6b8962710e4d663d5f3ef5877c1a30c3bb02e96d28. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FR9W11402537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b96f35b73e6f296c6b9ca9a66023e26ee911574a9aab905659aafa0763e861b. 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/FR9W11305248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53a26071c52ca9bc7e962a2bd76e56dcbcb4470f5fe5ac858e74389165dc5f6. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/FR9W11305249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4409f89fcc02094dff96c042f2fa9d6a10ee39065c82bcd7eb562739c79db5e8. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:48:32Z), 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/FR9W11305259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf809b8ea2afeb93e5618ca352539c285140d17864b4a8413438fbc7c0dbc94a0. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FR9W11305243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadf5aad9dc7e0aa026a66d96f23cd3e6e86feb783e98825bb44aa3df6de17feb. 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/FR9W11607753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe13ac07d65d7d21ca1d96eac5b79d3931ed90f078cafeb22b421d817b6ddaf5d. 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/FR9W11607754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x242da186e71e53a2bd0a2e954a78cfbdac49969d9c0663361a1278be403e2767. 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/FR9W11607760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5472e9a85eb83eebe7453ad3bb92f4cdd1aefd412a1b7e18dd33c75697d2198. 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/FR9W11607756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b143b7ca69a19f4847f8ed4928fd8a002f148e3c9b4fa5f534903a1a5e19cd4. 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/FR9W11607757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x254e9a0a441f8908827c05249ca12fe596def98c0d37b011d562490e83003d68. 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/FR9W11519829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4346e2c739285f3cd8dbab994648aa44408f606b7916f43652bf796e21a5bf8. 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/FR9W11607758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc8014573a5e2cd87208e2a5abff5d204a8b762fc7131f4fef52a4975f794c7. 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/FR9W11607759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf8e5c4d1e0e4159a3ddaafb94b9a7ba11d0889a718bbe2249fa5f6cdcff7607. 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/FR9W11607761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6427d63cbe1cd052399b9a043d1a708c08b0eb2d5b712ea40e89821027c8eb19. 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/FR9W11607762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x085d813891e95be49026cb4f71900393cfbd1419990210041cf236d0ea514098. 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/FR9W11607763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7680337b52aa72d8f6a413d855dbb0e1350f4786e9de64f7e45fbe24e7a51d40. 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/FR9W11607764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fefb6540b2d077ec083a9e3d6d2fa17eef65ca8fd80e9574f39bd38d9fba208. 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/FR9W11607755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34ba3fc50698ecafbd65a55d286f4fa7f7abf810702e224e1ed0859e7977afd0. 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/FR9W11607765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba00fa70d0b51846d84b72a3303eb8ab835f4bfa7e374213be0ed974555dbe6. 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/FR9W11607766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87533515480f481997c869ddf89229b1f96e0f5970f89d8e7bd25844405219ba. 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/FR9W11607767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b0d0a2edb655c9bec56c096a491f6b794d4f931776c8bb17cb6acbbc8985b9. 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/FR7O52200430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefb993b3e179d9665ce9b216809cb83a1e6538f33713613250e7319518a7bc39. 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/FR7O52200320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6427d63cbe1cd052399b9a043d1a708c08b0eb2d5b712ea40e89821027c8eb19. 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/FR9W11607762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a58afcc1d1e2d8e9094cc9af923612032e274ec6ceecec75a7fb6a94f179cd3. 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/FR9W11516356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e1aede139d096157a6a55388dcbad66145f4b0b7cf86ba9b0134693f4e0d6c. 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/FR9W11504754.