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 0xe3b2b69e833d55983891e972aff40cf5ee10709cc88ac036e1cc2e571c72d7c5. 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/46e84860-bb53-424b-854f-e3e17c8ce13a.json and https://artists.proofprofile.net/proofs/artist/46e84860-bb53-424b-854f-e3e17c8ce13a.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 0x5b09ecd1477afde7606d4fe3c82f025c8e629d54d0c1d68753da6b3cc2125bdd. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BXY7G2000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbca5cce9d2d881f91420fe6f40df8451a1691b9c7aabe76557e7848952c29ff. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BXY7G2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebaea6c6e43dac4fff6cc6cf0aa43610069b8c6466b86b49b2dd59028417afbc. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BXY7G2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26a353c3caa0a529c51038cb8b6479e301c939aa6f50404eb757fc73e9154036. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BXY7G2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207b39ce18000b6b9b42c9f324b878066e2919541365cbb5c96ea08319333852. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BXY7G2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78a10d190a2cec562c05f8b08551f2926d84aacdc7da623a6297b3912af21273. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BXY7G2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf73ce4514c6da13f0aed62c78640a175a299a8a266d654266c198abc8d8c7a6. 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/BXY7G2200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06f47d4e6543fd6a0ef7c3e46bc1688715b63a608e32a040a074bb5d66e92752. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BXY7G2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb9965ad121f199a27793751f080885e643cdc3779a282317005d1fcc2146f9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BXY7G2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57b09984205bd29460eae6d46a25ed3f03a46d02fda98faf8155925229a3e44f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BXY7G2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbca5cce9d2d881f91420fe6f40df8451a1691b9c7aabe76557e7848952c29ff. 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/BXY7G2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26a353c3caa0a529c51038cb8b6479e301c939aa6f50404eb757fc73e9154036. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BXY7G2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed557056339cbf1f8716d03c1ffbba3739e2d152aee7663affd31cdf9e1024bb. 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/QZHZ41949952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe98ca96d89426db4c358fbe1a6e374e0cbc27fc7cf3401eaf4cea00c7f73ec92. 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/US7VG1802744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0d1e3647021dc89654f347e58ec4f9ed8b4eed4f3db799588076e0f9c99b1af. 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/QZGLM1963137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d7c809ba099ea6a488b7ba2abee6a1c456bebf64a8f44f534b796a3994df4bf. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZGLS1935142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4721f136f57ae8f6dc00bea12632300addac1cfdce268384cf15b59926777d9e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BXY7G1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b25af0efc85b692311baec0a679c1f2d43ce5f8149d0c37c8cb9a6fcd7bf1b0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US7VG1961238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86a1b78ad9c33f5abb39d78003f25fdd00cb87eaab904b473b768ce68ab790d0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BXY7G1900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d88b19bb28df1d68e4e9d756ca1faac4007ac34513e370119e3b706757bfee. 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/BXY7G2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb9be78bd3256d9469936e40914ba1abab0b56f6127acc83788884b3dec13469. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BXY7G2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a7da9bf657ea940ef2f24d809daed875b38b91ec8712ed40b9bc9f89386792. 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/BCKRE2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf44f03b89d4de80a39b9ef7a2ee035451e2cebd30a1e6370d88b4683c6c20b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BXY7G2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa86c9dd596249f9c96add5a0faabbcca174c580f36d08ab218ed7c51f979f5. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/BXY7G2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf73ce4514c6da13f0aed62c78640a175a299a8a266d654266c198abc8d8c7a6. 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/BXY7G2200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf05a2acaced7a47a305900b9eb3bde6625327f15dc4693468c271b08ea0edb1. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/BXTM81700002.