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 0xc5f13c32762dbc25a01318d2c683d3e71793d2eedb28201e2cf11fe451b3c9ed. Chain 2 (Bitcoin): anchored in block 953588 (2026-06-14T04:52:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/010bebad-44a8-40a3-b87d-6e3704547e44.json and https://artists.proofprofile.net/proofs/artist/010bebad-44a8-40a3-b87d-6e3704547e44.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 0x193829cd483051b932250d35f691dcaa1d9dfab3b62a68d8c707335ea3a453cf. 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/BRANW2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb231fa1afcba64e06fb84a43f9d86edf8a941477852793998652d7d289d4a5b0. 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/BRANW2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c442096f55706fc9c25ddd0939a3aa11d36e3ccbfe7bb6711cfcf2bca62261. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/BRANW2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f8bce8f8bc2b29b33ad4fde2ba3bc71661b24f8c4a438fd5704b84a9d2e80f4. 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/BRANW2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e27cdd1769315fc31b25ded8749f31353f5054396caee6a88b59eb18d0b821. 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/BRANW2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2226a9cce8db03d988d335360d731bb32d77483df36e9c5f1b83bee6b3655c88. 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/BRANW2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20dc896799efabc8739eb81317b943b506dd7d34967adc0d469063060e2f07f1. 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/BRANW2100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fda4723a64cd56d3414ee02d1edf146d8f9f07c8c2077f33913aea79e087f79. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USHM21374664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ab7561b7d1add17df80487263e2b91ad607bfbd3d2d84fdea9364f4bafc468. 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/USHM21374667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2d8a4a8e12589ae3ca30769f62db156fc36e52c97176b035e4811458101a18. 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/USHM21374668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f7ec7a1940a259a83633728ab2eff3bcaaaac066e6c9719f561b5a7e8f60668. 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/USHM21374673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x547ab73e673dfc25f6e2a444550fafa4a936f6ef5c0852233d5fc1afda6c4c9c. 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/BRANW1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c1b084535f53d350dc72b1cb091c86b7561ed7532eca442680fb215ea43a10f. 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/BRANW1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb397de76e06246b827f6a5b6b781d899815bc3283de81336d74945f5d9c123. 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/BRANW1900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea3c846a53d6e445c92c5a7a427482db521c6929bb236cbed147d3bcd76ca468. 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/BRANW1900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb36146cc2b6682849422d405f193c4fad80296741c6a6cdb0714f7b6b8e94a5. 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/BRANW1900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad723f43fe3398bbb06f85c45dcf79c09ada201940c11d2261c37fbdc96bcda. 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/BRANW1900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a0f05825c2b596e8b2d094485a1801020958205d88ef22a90b4497bee7f7b49. 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/BRANW1900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b426ad046bb7020e0dfc5394b14d539f5dfc6e65031fbd5ed342bd27361aa7. 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/BRANW1900014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d5d6e7d61010d3b9ab0c637e0454687047505ebbc48d84498e7e8e24e1b86f4. 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/BRANW1700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9154958ea3dc74f1bcc0223b6ce5c6068ae2866ef0f73f5b4578e2a46343398d. 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/BRANW1700001.