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 0x4f5fb75ce6526a20bfbaf392460705ce58a2460b4e46784c6663b53af7f883b3. 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/d778d016-d93a-4217-8763-572d1f820601.json and https://artists.proofprofile.net/proofs/artist/d778d016-d93a-4217-8763-572d1f820601.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 0x3674affa1f23fcecc12dec3c6fbeb4a4e66ad3c3f24041958f8ed893ceed4f33. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/TCAGC2287118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3674affa1f23fcecc12dec3c6fbeb4a4e66ad3c3f24041958f8ed893ceed4f33. 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/TCAGC2287118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb270b8689e5604b3a7e46489dc657ba461e47e9cbfeb21e52a7805b1fd11d28b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR9W12218328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe488817148a91f32b27f5af1f6b4bc120757c115d2301f8dc281aa5d756f4d1b. 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/FR9W12218329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a958bc35078f670899b21d67a8a2fbf09ba6e06927958ed0cf379f747b5894. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR9W12218330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15787ccb90ae9fb0d6c5ae06eac71bd3fc25c7c5ccbe9b6fcc45afdea88edb00. 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/FR9W12218331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d0c776da988727b1566f249e7f38a14b4e56b45df833ba4541ff99e400ce27. 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/FR9W12218332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49b051962ce5b6fdbaefcbf578c748db315a4d58e6ad3072c322ca2c770d8786. 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/FR9W12218333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf90b68dca7ae62f2352221cdd7ed80c91fe655cf847e8757d79319ea66c09bef. 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/FR9W12218334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x834feac87dc2b5df96d11330d89bcee82dcd7ce92864070c6ad13e44e5c798ff. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR9W12218335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93f8f9cadbce57544e13b6031147b76c634a5444bb65de8f64fcd3df4173f32e. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/FR9W12218336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30dddbdfd94474cd6f7aec5fca0ae769216084be3f268c61c38c13e3a7e9f03a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR9W12218337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb148071fd7533038a5e6a0003a690b192072fe52025276142637f8ffcd3c46. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR9W12218338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3ebd05652750a8c8d25d017f60b84f0633848f2b95827f803ed7c23dbbeed5. 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/FR9W12218339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7716a17a4429fb46755834b10b3f7907d14939eebe3f6bcc4d03cd03fd41b08f. 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/FR9W12218340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbbd5b429a38bd8044c910eaab249963a05e88931ec352bc4a9380adb4024eae. 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/FR9W12218341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x959ff23ab926d9b8a323979139bf900e740de84adcc1aa8a0cd78bf598c590fe. 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/FR9W12218342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ca54f3f06b4d5b701c7e104ea3f6e3d07ef6ac8c529de82b6b7d38eacf3571. 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/FR9W12218343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6fbf173e91955af239da9b1482c86fd8eaa968fd6836a5ea4be2b39f2713ca1. 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/FR9W12218344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ece4ebc7317aa84f415f5df9099a1b20193b1b8090103611db6c97aeec98d7f. 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/FR9W12218345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07f908fd08f1d998e2e8d3a38af1bee43369812e1f10e84b8447ee4bb59c3677. 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/FR9W12218346.