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 0x38b45cb1784e069c3f25d418ef17d400446a17e8cf010fd17a44697e21511fce. 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/6042a1e2-fc47-4110-9a5d-c5c418a379d7.json and https://artists.proofprofile.net/proofs/artist/6042a1e2-fc47-4110-9a5d-c5c418a379d7.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 0x4b6ed7d4bd2f77dea5968848e35ffd4fe94fbdeb8a02056f8feb0aef8ec273dc. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/RUA1D2243566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05672041a93fbf32076f95e0a2b1f9dbe17db411cdae5eb5ac0c5b6ea977ba3a. 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/RUA1D2331608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1818fad9a8e5df4ef41d0c71489d460285be0d8a16c07ca9e264eb62fcc23df4. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/RUAGT2222100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04cb842195f5ebf2ae4c533c51e3beb035d625ad84d7c8ec349d32fd28cf0f8c. 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/RUA1D2317827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb38e2c9b51487c54b536356ecf59eaffc4572a3e1e3f84eed81454145acd9672. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/RUA1D2357375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d63bf910f727782a53cd7cdd33487d8a9b8dba08ff80bf9d4a79e3147b6e020. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/RUA1D2405054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed56a2d0a962e1f871de426e8c03f36f8cafe48fcf7da202e3c2825fdd78b611. 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/RUA1D2441557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c5d24793d65ab42504c9cf2ae98ef7dc47e6cdd531ea1e99dbf022a3b55b8ff. 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/RUA1D2441559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaa4614bb27fe9ed57098894c9c40314c582fb81d3385cdd81ea4ecf5bc3bf1b. 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/RUA1D2441561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c45df3f5828b9b06ba316ab25fb49d6b37dc708a5f887ef1ed499fbfecf18f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/RUA1D2441565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e1c244efdcac45a6707eb3abb150b3bc7e519b458c039d8a36bb913fe5b176b. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/RUA1D2441567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ecf874246f5efba739bb1b08b0e73978d55cce8fed323ac0186eca891d8228e. 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/RUA1D2441571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6daa33df2c64ce0de48e1417037252f8225360a46d5fe890f84e6ef45bb6a7de. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/RUA1D2441575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3709fe0048de6754e38bb27bca87333ff7ab5c9a25a75e33009012fa9b8a5b55. 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/RUA1D2441577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf8a05812ae127dc114f4c9d2bcf0ded72619c83e5d99c8f66a0f2173d0483a. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/DGA0M2460854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf6b63e78bfceceb5407839c83f6572a5a81eb31f883e6b7fe89b9d38938f44. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/RUAGT2465515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec2680dc3b4581dd1eb662acd3a17d08d208166e0fb08f196710cfc9fadb9709. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZW9L2452840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ac36a69fe8a97cb170903a7aa940d829ca04aa47012b5360bcb042861c95034. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/QZW9L2464708.