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 0xde32d25d3be9a6bb1b1b8a47ff415c1fd2e003a6e4db45043fdc221215ab7f5f. 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/ef20d15d-51d9-493a-9801-05c6a4d50d5e.json and https://artists.proofprofile.net/proofs/artist/ef20d15d-51d9-493a-9801-05c6a4d50d5e.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 0xe062ea6058fcbb8f792de61b3384a34a52ff40fd34e82d33b3bb98ca64d3ad60. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZKDK2254669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ba6584b525482d479181883d641761a715acf40f4a515e1050ad76fe73e7bc. 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/QZK6L2030180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81bd9a41dd4bd586fc9f669e41e919d1c5d3a4ff44d1b98aef448d2b4c75c578. 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/QZMEP2064023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2df8035d4685f6a2164b7520dc095d331b14e6b093325addc69070e0d97cb988. 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/QZMHM2285752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb37f37f3fa7f631ecd12019c64cba1a42e1a652713e483afdbe575254c706f2c. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZKDK2215895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f2284ea7e70bae4377ac37bd261a799cfb362946bf8b4bb6f89136608e4956. 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/QM42K2218607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba297ca1641b0965d02858c3d23b95d1d32562beba88463b7c3300d0c7435a0e. 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/QZS662279962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa98f084053fdc414e6b3f6cddcdff3c198cfef7761e9f46989c83958298ddd90. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/DEPI82306657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x870e84f89376643a553e879e8450db0cbdcfc785ac9abb82978e542d4c0cbdd4. 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/DEPI82306658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x296cb47271aa0d24cfaac5dca51eb825e3cef0cf8cf983dafd9f4d2da33832f2. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/DEPI82306659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc585a8bc3a807ab9174d4e57efa790b2c2eee31fcf4c1a60386eb84b3965dd43. 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/DEPI82306660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe06542d98550d1ebe5ecaa9dfb3bcbc533b12da9a71cfb34b3b17bce468a2250. 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/DEPI82306661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90fba487ce3bb5503bd521823c3302a98b8abc516eea27fd08675a8fabd041c2. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QM42K2325948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e5f0b8d0be93e92fa2cb2565ee221efc941681bd0699d349ce8d218f1946b8c. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZS632223645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ba4d21fb8c2dd82e87ac1646b513b9ebe30543cce2a88f7ab2b4e149496fcb. 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/QZMHN2319299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x591f59c828845f52632bdf1d8e0a4e5957680f75ca9006772a1ef23cdbc9dcec. 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/QM42K2363268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a0429a1aa9273c86f156e5a7d71d24b12b58d6c9076d8bf982c88a018d9369. 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/DEPI82307099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e5021089fa14f1f74b5da9993ff80fface727d4507331e11d2e5e5f612aa33. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/DE1KS2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b08af26a338c312e8defe24c40602fe977560254e268695b06224202ea0219. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/DE1KS2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dff1d098240fa1e8588f47c250475f737fb12c263371bc2a23349ff44297ae8. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/DE1KS2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d26ede9f746c7e18e5ffcceddfa5ef36daa1f978eaaf5875e8ff22652a574a. 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/DE1KS2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x390f2f1f3a66edbce1075dad6ebeae89ce65a66a01cc1022ccd02c5202cc5fa8. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DE1KS2300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d29f0a056bbeb4f5c4ed29765034f486717f076a1854956117eb8e57a496b4. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/DE1KS2300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290f20d6fbab2e1abeec8a5a2589a65274ae08d4035189a2b5a56ff40f8321ad. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DE1KS2300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe732717eae0da185133f531207277f00aeffc4c712246ef588b0694b4d72e752. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/DEPI82312707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafb16759d6431b409ad4031a740f8ee4a02966a369b50abe3c4f163e2ce4e6e9. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/DEPI82312713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd664f6bf191b51b040e7f30b3c48f508a7edc85a4744293f0b0e4716309511. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/DEPI82312715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb071df80eb43bf309eb16a1b84f07dfbdcc9b47dc4c87daa7a6158c8e29387. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/DEPI82312718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d3ef4d41db7ed104995a4af7792c436621d5ed1c53672aba6b482a902015cc. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/DEPI82312717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e5db55cf9bebd3b70c4010a6e3cc9c8712f3ea1a5bf5f2ea51f82fc9675d571. 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/DEPI82312723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x124654ec1ac7b857cab903795159ca19bc53fe2a6fce5ab6763312e118d10aaf. 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/DEPI82312726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6428de70859c209a9c1a9c7ae9baca0b4959021690377d151a349cf4dc0aaa09. 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/DEPI82403381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd9cd6daaeea96553ab0eb906e263405f41a6e7c9ec123de2d1ebfc15c6fdbc. 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/GBMJG2408767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd9cd6daaeea96553ab0eb906e263405f41a6e7c9ec123de2d1ebfc15c6fdbc. 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/GBMJG2408767.