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 0xc60ffa68b509963f7f02d9a6b81dcad9b7bcfc197a5d60c5bffe33e370abe3e6. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d604e78a-9706-4d9e-ae67-571242d9d6b9.json and https://artists.proofprofile.net/proofs/artist/d604e78a-9706-4d9e-ae67-571242d9d6b9.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 0x95c2ff09f7dbe81050de4fdb3abe7e3b4a4e7b6648c2b68a0830df986bcaa03a. 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/SEYOK1317448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f148874eee5a1e9d52505630dcc53117240b20f8968023107981e141aa4322. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/SEYOK1317450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x448f4279a0f96724c19b84e32a855a160187611cba38ce7a484ccf85337aa186. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/SEYOK1317451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf5d4d7a546145c74f926555ace9a7923b64013a23cd252cea8b05b910d72134. 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/SEYOK1317455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07bb3a8430af5dd55df8911186f6df67a6304f9a6c69bf7e7dc5f800fb5bc75c. 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/SEYOK2210219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb67d689be0072038fd155d646231fe44cb0b076e125cb858c4c85d4c640764ae. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:22:52Z), 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/SEYOK2210220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df9a8d8ae9e99c9c6f064710618aed36a8f19c36dce15f93e793e27caeaffa0. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/SEYOK2210222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x020b69be84800195f80135119dbd82aae28900468773c6c8884a901ebecd4fcb. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/SEYOK2210225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92e91ecf75e4aae9241dfcf72fb2114d0667f1d0ac30b45b21e118078445e413. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:22:16Z), 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/SEYOK2210226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a98165414b6da97112232f0d98dc0d6475cefead0ca7f6d8b5b22e3bd15122e. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/SEYOK2210227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f03e7b61bff5ac9061c2127740161c3d86e1abdee7a7d7034bba5e0f46c81b0. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/SEYOK2210228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b6afd51f65eed75bfb2b5148d46d52978628771f2b6bbd7a9b252e0fbca8a0. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/SEYOK2210231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba44fe6a1d4359c2363b3bf6432b879d07ad8dd742e799469abfb04cb05016b. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USDHM1108007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b9d9f1e0cf832954de08d469e97149699da39b93533b3094ad4360bf462263. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:41:24Z), 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/USCGH1375620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e52a2a4acedd7a7c70dce36c966fac6454c69212f364e91f09d59e16d78f36f. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T03:55:39Z), 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/USCGH1375623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4580b10fa4d5b22d2d70659ff2ce99f3096d2528eae70823dacaa5d3eae5d4e5. 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/USCGH1375625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce308eaead7edd838287b02976d4113b65b5a22df4911f1744124a51e801b84. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/SEYOK1659844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe92e9a752a92a39d61ec6182935c053bf180087570509b4205177003e2dd3d3. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/SEYOK2423499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa52e4b7850f6256998cc026958433121abbd8215e47ea726d28d08101c41570b. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/SEYOK2423501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1b203aaaec424fb5e5cf62b6ca7510b1714fd9cd90b035fc19d2f0d73639154. Chain 2 (Bitcoin): anchored in block 957705 (2026-07-12T12:50:42Z), 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/SEYOK2426598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ccb66f3282173f55ebfe76564959b9bdc9d92652e5564a6f8a24326e9761302. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:44:01Z), 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/SEYOK2426597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9efa754a3dc9eca4f5bc7b669578572634cb3399a610062b0719ddefe6d0feb8. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T02:10:29Z), 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/SEYOK2505945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd64b4145af01d6401fe45af06c53b35633c77697ed6975c4c8ec1f9e4fab08b. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/SEYOK2505947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de46c0a1cf95f755a53ea18b48bbfb8d0589c9b61774bb7b4b5d0523ec45f03. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/SEYOK2505948.