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 0x42c67be47e9f2ab46c7c693e90a08f422ba3733e924b86ea054796ba963d7217. 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/5166986c-16d2-4acb-90ef-d288417d943f.json and https://artists.proofprofile.net/proofs/artist/5166986c-16d2-4acb-90ef-d288417d943f.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 0xdf9dac25dac34d36a5f4a230f2ef1517072dcfd8c605b0e746547d1f2db0d5a3. 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/USHM92116898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1daef95452d003d3d47d31b2838da206095ba7414a8b6bb0aa00edfff6de775. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USHM92267307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5205f6be3e45600e9cf35f028b1d99dace23b15432cc2dad85b409899324454e. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USCGJ2124984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc71340c36f8db0666e5abfd248cc253297be795dcdfd0d7eb482eea7a2d821. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GTA111800018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf3c694ef0f62443c24f1ee3310b301fd4542ebee6cda701948d301dc39b04b. 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/GTA111800019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2209d59fe2f6a2379fce480b37e6e009a1535059b8c30c839708ffb55b4404a8. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GTA111800020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ccf505b2cfd4da566e2a607aff1d20a21803c74b17584aa81bf1851d8c0db4. 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/GTA111800021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d9c127550a560b9c3b792c5627b110d44841173628e390b75e322008ff238f6. 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/GTA111800022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c345845be4595f8188c99b6998b6293d3a862626c927bf1c94019d80d2be003. 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/GTA111800023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0edee17869d4143e10aad34497339ca01e75214b99e31073f43d7cf79348a23. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/GTA111800017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde7e938d1943cd54bbbfb889586d7a5baf5ccad670ce5308aa1f96fde9af9d40. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/GTA111800024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80d8b49871a0cfe77241401067b4af30ca808546066e27287945bba10f66d8a6. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/GTA111800025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe43cc9381e1865ef42dd440029a30fd7026271c8189520c9823a960ebeaf6e02. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/GTA111800026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c5dee0ce93b9217380953b1aad32cd6a03703cdec3773a60c75dc3347d5b5d1. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/GTA111800027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe2adb52d3bc67e5af1b6fb1a93de912892b52c955dc652b09565135e17be8b9. 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/GTA111800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cf76ddd4278ffcb934b8ac49e63c03bdf0ce89b113fd75d7d7a1d8192778b03. 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/GTA111800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73a180e474451682386c630a2dd6a8d78180a5eb939e4777a77d01cefdcd5aa8. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GTA111800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce7ebb98606410f0bc1ca9f4426b66c941a01e5cacac4fa527ce22d02b52a5ad. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GTA111800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6001270b444a375c4dadc9dd03aaf57d7ccd039f852257edb036c1882cdfdf04. 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/GTA111800014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda5ffe71a910b7575fbeb2cbdb38f18edcc1b454cc4b4924deda121673c277b3. 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/GTA111800015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6eefdf622b73e5cd8d190861cc2f23c3d351f55b71cd6869a97202c169e9d65. 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/GTA111800016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d9d992ecbddc930ec2b6976909fae8bfc4dcf6c05d4eecb7f45f5084fd265ee. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/GTA111800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa530b1b4d9094ed60418a64ec3fc0fd44a7fbc940cf017b3d8cdbd21ccb53e7a. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/GTA111800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e090a3fc424f4a4b156ce78929ccf3eae6cd161875277086f9b1c4aeeb08fa. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/GTA111800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa18be9a740524c173b4bcd0068a1d695cb0a3ce15a40e44717ea554f1edac85f. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/GTA111800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb9a99463e5991a42476b576824e1b1e33bc080cfffede37400e9dce0837d912. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/GTA111800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18775317cd084d1e16d5fedd764cef77295c70ecef9edac15321ab4cf79acb34. 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/GTA111800034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf081770ae509e7bcb08d5ef2ca9c62ecf7ca6f8ad926b60100fbf07e9e7c06e5. 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/USL4Q2474581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a459229a66dbe321c47f33b23a2512b7f9677ea711ac8ffb21341a9b8efcb1a. 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/USL4Q2474582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c4bb4f6d021f629374a2a6c4a9941b9a03ec343d65df07e8853da53b8b1dd4c. 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/USL4Q2474583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x371d38e677b0680361446b3a514eab913cf26bd66fa5c85a0967568b27704776. 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/USL4Q2474584.