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 0xab3a74a95e078a38f7e1869c73409319f3bf17b584442f438adab19e2ebc1d62. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9737f8d2-8e38-429b-bd95-3e19acdb6c18.json and https://artists.proofprofile.net/proofs/artist/9737f8d2-8e38-429b-bd95-3e19acdb6c18.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 0x7546d0ac43c87603360a68284ebd6b8e1c5c06aab8ea1e397059b1bd242533d3. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:20:45Z), 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/DK92S1702201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb16e17d957f789c3f41ecffd6c38a8e088b1d20c3f5cfb2d1702598ede9038. 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/DKPF52000201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe90218e09db8fb50ace1b3a6dd1ab46ac2ba6b570e331c75079b05eb64e87ae0. 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/DKPF52000204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x751c5f9df367ca628482871bf778ebfd9787a7f007d8c4d8370b5dadfab5ea8f. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/DKPF52000702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x540cabae2ea8065571ed34d39284d3737a254ba28040a3baf7ff504cf14dca0c. 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/DKPF52000704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bce301ebb42fca53456da068df6730a2b962cdc5f099422afdd897797a98dc7. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/DKPF52000705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x903ed60c6100e0198b6f67baa7eaec727968e32277e57b20d9ddf18c8526237d. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/DKPF52000601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1f4df6f35e6fa9a9f3e8214c56d3e72cf89cb3a8ae70668de307994b469a53a. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/DKPF52100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf467f96b6b91623c500e8c72e36f678c66d95e054a389db72e8df650f92f9c32. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DKPF52100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb46a04c84c97812f03a329cf968a0d80a337952f3d14c0999ec90b438a83f598. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/DKPF52100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2929b1dd3197d88abee9776e9b47004c0fc0cf20d39407343c53bb1aeb06f679. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/DKPF52100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb786b47f6900d6aca81dd912ffd962ca567cb892fcb1ec951219dd656f251df8. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DKPF52100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe699fa9e1bba12ad2b633068564b148178cfc76376d331e39a5852ddd30f7ecd. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/DKPF52400308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe69356f9ead4bdc3ee64f03049bc27bb240ca94ffd50c90dab2101cf6c4cff89. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/DKPF52400302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab922d1e4bd710c9c0b76b72e11fe22c948a16f3f9bd9f58bf8358a32f32e2d6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DKPF52400303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaaf82425dfa5a23cd8d2c083a8aa45a1d688a4293118198f2392c40b9a6a59d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DKPF52400306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad846b4414471f6351103c81e09db4e873b739cb545e99e42958ee7d4816ddd. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DKPF52400309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2ef1bf2974fb1c3fd29fb18581d8ac50fd055838f935587632ac598ca0a7368. 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/DKPF52400310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a31bcd900a0fdd9cabe26b778cb6a6a1ef2cec84dcefbd9f68a827c382a87f7. 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/GBHLW2400213.