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 0x7d954680a0fa1e60cc972a804a3168c11f138aaf631e207ca1fa813f8594e63c. 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/58688ba3-fc0c-4182-a313-a6f8c03a6618.json and https://artists.proofprofile.net/proofs/artist/58688ba3-fc0c-4182-a313-a6f8c03a6618.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 0x8e2a169a5743e4d52ad4d52215ff696faeb62fa0699466c503a7b79a56ca7246. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:48:33Z), 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/NLL8M2100524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d2246eaa18bb36b6f603b52a4cf9d198e7491ffdd262a4d3b9e6ab0ec8c60dd. 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/NLL8M2101771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb058d00bb57694d124d45cc94b593812a1ba071b4363e4492079384417823af3. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/NLL8M2200088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x353c5a44507ffc1d17a7fa2c3a728030dc396e09a2391f6e161749bbd9a6d754. 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/NLL8M2201046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e62ef4acc3dca746188e3ea14e3122292abc335533f9d084ca32d877aab9589. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/TCAGJ2288098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x506b2d778ce840e2544d14ba78ecf51d41512bbf41b2d2dc877eddd6f4d0e68e. 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/TCAGN2248399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f8e8040e562cab0f993cd7bb9921baa475c582462ee9f5e90254b2cdc42715. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:24:06Z), 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/TCAGR2268281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe34624ffb38618736d8c78fe872921702c13daf64f4b5ff6468b5f25ec5d2c4c. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T08:03:45Z), 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/TCAGX2361346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a4dbafc1d768c352094152a466d2ed595d5920ee93697c0f2b31e7a3410bf5. 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/QZK6Q2370191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfdf5265d3effae919c3548bd74f9d84451260b624334b42e46821f200d00f12. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QZTAU2399197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b0c9c79ad659d37ec1fb4edbf18780de99384377acf2b97976d30279719d745. 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/TCAHM2310305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8450469ef1367ffd72a897611c636a3a3738470a7fc2d2d30f1868435407d10. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAHN2321838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bcfddff098b3ca5fca9a9fa6868d0facef12baa6eee2a2824f51297ca667e1e. 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/TCAHT2499220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x550486a510864f7566f338c01b7678a33f9228cc3b4e8a37f4fde90bb3590417. 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/QZES82459516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45b576bacd1effa2c81d648a595c5e69defc90649cca165870e457d14a300baf. 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/TCAIA2444354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdc77a1e2dfe1a02bfd6d16ec42da1df7578eaa13f4b2529c4bcdb7293f94f11. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/TCAIC2469688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x753bd192f328ee449a653f59c8da0c7d4d40e242e392d0d68cbae3d6d576b321. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/TCAIF2450038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee6aa9c9c5aedcad60ae6d7be7af707333acbfedaf41f591110acc7e17ea1a14. 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/QZMEQ2491740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf2f78eff180bc365ef23aac863097daaac2be8ed523631cc69d13bdbadd4a69. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAIP2445402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fadc1e2c1fdb8d2a2aee95d4ec3e6d0a76ceed6c146cfd28c81df137da44f45. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:47:18Z), 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/TCAIR2458413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36e6339d0f114ff092dadc0aa6a18659d299edd6173bd1c4811dd33fdd83acce. 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/TCAJH2505618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e235f3494a68ceec983fd4c2fb17f7491a9cd9d18e130310c8f8c46de5a1af. 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/TCAJH2505629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8dfedc61cbd20ddc76e8e19dfcf2824391caec88b45a012e872faa4c77dc774. 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/NLJ2H1500230.