1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xaa837c47e296ba195989497dc9bd572071f5c1aff8fcc50692eebaba04b5b43f. 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/5d5b0a09-89be-49eb-ab76-88fd05d87ba0.json and https://artists.proofprofile.net/proofs/artist/5d5b0a09-89be-49eb-ab76-88fd05d87ba0.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 → block OTSBitcoinBlock must exist at that height 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 0xa7debc4f5437044cdd9aff8c3dafea9c3fb13c4fa32996f35d4140093cf40d62. 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/QZFZ62341567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x265d6310a0c3a6ff7188346609eb43900f35564ffe6785db145569c5c6697dc5. 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/QZK6K2329429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14891a20758a18a8d87f6f59412c357306617726cdc9ce28b85796e35fb6bead. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:46:12Z), 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/QZNWR2305961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e25c6a922df19aadedfd9fedc3a5750098a13f760783a445627cf0e1c5236e. 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/QZTB82337759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2156713657d56bf51860e17d73a871f18558446816938ff27c74f4523984d50. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/QZTB82337761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60b1233c39048bdec48f18ed0bd6502556bb7e5d618fbe794d1f3d23a8bbad6b. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZTB82337763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd9db58adda005c470e6bbfe94813c68c47c45bbe7d0ea3f6daa5b164df4512. 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/QZWFN2356026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b1847c3f2a6a412a31fd36406fd09d86302891dfa4d68dda1b3007cdb33ae18. 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/QZK6K2491687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed21dab151d8c7ec79a663d731491fc96fac0ab18147f9d2ba158ad5301eb0ca. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:59:17Z), 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/QZK6K2491688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4691dce5d27697e7d03906320221e58a9485c8217b644ed16786fa5a2dd128a3. 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/QZMEM2488113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4877156d8fc94a03b40c403acb42abf1c82b0804d0b27d4f6313c12d95785ff9. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZZ7V2484200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4563262cc4d6aad02c122c7a361d9ec5fbed2d6c7c09069e119fdb6edb1984a. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/QZFZ22565758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91c4980f040cddd831968381b82b0ac05d435c02ae8a63f553a61db27b2a0dc7. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZK6G2541141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe397a00476abae3c6faecc0e8e1e29ffcf9041a2874f1e4d348b773d6a9c6e84. 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/QZK6G2541142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e53303aeb7a55cfa9b0d83dc7236a171ca73705f54ccf1739a5b33600299730. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:09:58Z), 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/QZK6G2541143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15fedb74f9ad37cc61fc69ce3cfcbd5a82354bf8d798d95761d2dfdb3de9de55. 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/QZPLS2581597.