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 0x2f2e2e0f989d1f075db2585ab121a31359267a751a27e47b307786833b42ff6f. 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/4269eaee-fee0-4c2b-a7a5-828a72cc63d0.json and https://artists.proofprofile.net/proofs/artist/4269eaee-fee0-4c2b-a7a5-828a72cc63d0.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 0xe586afc277917ee5594297f1af114a8c7e3d1f03c716a50fdb7f9d5842d3f8c7. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:16:58Z), 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/GX8LE2567605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4475c2ae65653d7156f671b4bb75b7b269b0d5c3bf53900474edbe86a3bd6ff4. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/GX8LE2502920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc34b662011a63620cceba602982b69460041c7f55b363a9d586844ca8656c3c4. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GX8LE2584108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf850ece91d5c2ba33692416a0476903494273eb3440f38769cdbb225c9666913. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GX8LE2592000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eecbca8f4d73a279745ccc1ddc58452301f89ffab1221873eec92fdad9a9d93. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/GX8LE2542540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x608dcde54c1516fbc833151a34f33190d910f81a8f13960ba2a4030a0910cca8. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/GX8LE2554350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x362868bafcb15d88fc57d53ed347bb581415ee1ef03ce2e5308bb772f4b1aa07. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GX8LE2502460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa23bf1cd5ddc81835d3f16a85f6d63dedff64bc55ffc4060fd2518077c8155dd. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:51:02Z), 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/GX8LE2507862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8d6ab160addd86fa53b39f93386ad1b89792f60f9089edb014b99b56864783f. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GX8LE2518891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f0aac4cfdd2785ea32c78358425e2386d8d93c8eea8a3e758a0b995620f257a. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:44:21Z), 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/GX8LE2556325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x457fea2a562090de8d1473a2d2b32d189865ec7086f92e513dd9aff148aca64c. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCAJR2574510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70cb5aec5196dab43327ae98d25c672c15147e10f740ce9f9d967dd97160c7a4. 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/TCAJQ2574516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd00c9f4d817465070a9c653f1a711751e655d37ea4c1baefe248792490050f97. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/TCAJQ2574525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe24a505a85216885e33d07ca685f0ebffd1e415afc94d9198ddc6754eb527b73. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:01:22Z), 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/TCAJQ2574534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafbde46cc282c42b65e27b9e7e295699e4e73dd1fd6f50d60a67c71adbd3834f. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/TCAJQ2574538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40bdf6269759e8c1ee37b35ebd037210ac3661be35e36a89937aa7da55d721c6. 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/TCAJR2574561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa853994b7a7b49691c62e7d0aaa34367b7fee73b73134052eb0d4866cafae6ec. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/TCAJQ2574564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9fbf1c4f3238b851b59551f556ce701bdf6c0ebc73a1ec0cb5803621dddf130. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:25:29Z), 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/GX5MX2566002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14a02371c3c26ac7abbb646b492f01a24810ce8122c7b40352395e75ead1af5c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GX5MX2599365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d2278bdbe04f71bf7f9b8519c2d1baacbce4b2ea9cf6b969bbe6220b6c86d4. 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/GX5MX2515271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffef6c98d2182b29ff513a00e9a1490db112d87c68b6f5cc2c2c3519f602c9ed. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/GX5MX2566547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd63db19b13fea55db92ccd2966cfd5e3529b9b401515b7a65a1e6fac7d3aa3b3. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/GX5MX2530549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1017d1083c44e5fca62e0819d2150775c2b914203382e8cf19f144238b69d51. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:27:11Z), 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/GX5MX2570298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ce7b20cc9ca797bc316d952c444cd331282aec11c114d7d7765ab01e541d3a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GX5MX2566842.