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 0xccf3498584dfb4c5aac17ccc7f9326a60b500cc4f621ae6d8f5a57ccb9f71204. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/01817ecd-4af2-4564-83ae-6f40eb9b63d6.json and https://artists.proofprofile.net/proofs/artist/01817ecd-4af2-4564-83ae-6f40eb9b63d6.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 0xd64fc057f039a82ac4fbbcfeca7bcf50869d97171891de0b1e8448ebc35ced42. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZTAT2322326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd64fc057f039a82ac4fbbcfeca7bcf50869d97171891de0b1e8448ebc35ced42. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZTAT2322326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba9ea9a1626b4889cc5e13ea63e7b5381f01a7d77c3a864cc30f75964f890565. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:59:04Z), 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/QZTAY2347486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x286a98f43d86e77dd1781fe32830e226df579501737f0907c1d44d0d6b1b461e. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZTAY2386407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x286a98f43d86e77dd1781fe32830e226df579501737f0907c1d44d0d6b1b461e. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZTAY2386407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1777b4f08d18044c05e957757f18ae53372bd3629e726caaf0bb1de7d5aef9a0. Chain 2 (Bitcoin): anchored in block 957583 (2026-07-11T15:53:17Z), 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/QZTB42361864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0dc94b775d7be497784c0b3eb229935871ad0be0256803e0d88a19fe8384430. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QZTB82337356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe552f96f705462d8288ddc84127ff3edc5ba0c1660a56c1a1fbdcf171b4d1649. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZTB62382188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe552f96f705462d8288ddc84127ff3edc5ba0c1660a56c1a1fbdcf171b4d1649. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZTB62382188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f40c341ea724138a4cd8d63dbd89243b602bc9a66f78a2edba2791326db08b0. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/QZK6J2312055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f40c341ea724138a4cd8d63dbd89243b602bc9a66f78a2edba2791326db08b0. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T02:18:07Z), 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/QZK6J2312055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd552fcd7fae1045aee6107896aee421c1b92bed2f7771ac5032cfe3c0e9e7f15. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QZTAW2367948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde997ec4e13c59cf133a18f4e64c800797f0a1beb7c51586eba32514d4955049. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/QZTAZ2306845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30ed3dbf32c8af97e2eda8f58ff9b78640c1a981237a5413265ac5d49ada23ee. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZFZ32476655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72feff1eef182f9c927b74deee76b604adcca7862a5130abe70d99ea6ede07e. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/NZPB12403784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf7fb2f40a9c41894c8c73dc71e477d7d1335dd90c396cb17a91d434af8d4109. 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/NZPB12403785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72feff1eef182f9c927b74deee76b604adcca7862a5130abe70d99ea6ede07e. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/NZPB12403784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x196d2585a302213d2b60b82077c518db99e175682a4092a30118c0cf92c50088. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/US7VG2508512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a67630c6665dbc5b70934087c86f0de2e72abcaeea2c241c9127166c86d2626. 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/US7VG2508514.