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 0xa9303bf0e5010b3e945a2453cfa27fe48a850337b447ca328b9dada2904def75. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/54e7da9f-9521-4abf-9e52-b9d6a2cae4b4.json and https://artists.proofprofile.net/proofs/artist/54e7da9f-9521-4abf-9e52-b9d6a2cae4b4.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 0x057d0525ea1504996b00891ce27b333b05284da2b8f94328af3da8f8937de487. 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/DEZN82504700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x977e8f00d1946817a64aa9293445ebc32633b2c28b6474204040362c4fda2627. 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/DEZN82504689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83da145b644c59937a039c96153826dfc8b1f8b5664eba60597a426aafe88990. 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/DEZN82504633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbebcd1d147ec7e5260bb8cac52f3f4c9e77512a0756465b395c09f347b5e38b. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/DEZN82504625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b401657488317772fb8db757d4dc978fd2dda300fe2c224e435715ef9936160. 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/DEZN82504635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd0475daf5fe1a73336cd3b75e466ae7b3d0b2bbf04fcadbf31b9f8efee6d4c1. 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/DEZN82504660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d99b32e4070cf52988ca67a702fcb1f8b9f37782d22af4ae2db401973ae1e77. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/DEZN82504584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b53c8623b54b1649027101669e18c7e9724e798304412f1801b8384897499e. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/DEZN82504690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x771690efa84bfec803207819101e55730792ea544aac418560b38062b7a3a2d0. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:39:21Z), 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/DEZN82504627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd9ce578565ec319c80da4f36599c9e2a9252ec69c7d0889ccc05c769df87455. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/DEZN82504692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca4f0a77380025fca4ef3e1dedbf9d9d22ddb4d20ae7bc1c25a8df1481e33452. 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/DEZN82504646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5050280cb3a791414f3b972daaf167f4bc88d8b2139e9809a6eb4147809eea33. 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/DEZN82504620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd029f4ef96d12e6291d0b5a81e5ff123141c26bd21424bb053e7ad09aeb3af04. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/DEZN82504661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc895f97e881802f806d47270a89b486f86b1d9822f1d10e991bbcc200bf8e0ef. 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/DEZN82504693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x606664159e83b38126592fcb3548835dc623067d3e8d400880d236dae988f10e. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:38:46Z), 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/DEZN82504655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b20bbd5ca73a10de0cb31e899aa3531e14be0702a0cbc3d598598967efa9402. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/DEZN82504691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc05a6fd2a24d229d8d9b151aa8fdad8a2bcdb39989a775df20904a919411bd75. 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/DEZN82504631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232ebb40906c39108cf58312786928d1cc8e85503c753ef99a05133013b39183. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/DEZN82504622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e438e8d84fbf4c22fa4d427e035030e1fc411df38fab2ba9d017a3fee27db6. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/DEZN82504698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ccf5864b0737bde645274fb701ec7cafcad328f1a6c4921957e0ce876776169. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:10:38Z), 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/DEZN82504701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b461bff121e9851fb37bad2a6cd7ec478c23ed4e11fc9455bde464f8fb7c33. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:10:53Z), 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/DEZN82504644.