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 0x40f68373bc9a065aec9691b69091a515e3b893ac6b3b267902fde4896eb98538. 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/b3daa8be-2c01-4594-83b4-874af93b5a32.json and https://artists.proofprofile.net/proofs/artist/b3daa8be-2c01-4594-83b4-874af93b5a32.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 0xf9a82c7dc1602795826dc6fbf1a4877d1b6e5511578a59d004bb3cd8037c4324. 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/DEPI82510842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa0d53276ff3841a94900cfdcae04dd1c7a83fcaed196d7a8b21627dc18859ad. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/DEPI82510845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4027e5b022fa63fb423620d79c3de8a77590ff04068db3f0a3e45f707464555. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/DEPI82510846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d00bb81286f3682a4f8ab6c46438a5fc545fdb64145f68d8c5a6650aecf0e12. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:47:04Z), 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/DEPI82510840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x995a0ba61c9a7876c2b06c87839825dd6ae3c724fe40c95e0691a5a4dbc05527. 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/DEPI82510841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f585a976e04f979f1324c9514ed78abadc0685f0cd575ee65bbd21bb9194b8. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/DEPI82510858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0e59cc18c628597dbd5a313155bc582afa82fd75c1b3aebf30361edbdab7510. 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/DEPI82510851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6dabeaf496c82d5ea74215756e33cec5d0df88f1a078093730aaf0e42cafee4. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/DEPI82510852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da429c1b8281aac291893e62322f6cd14126b53649a478d7d8c3d3b269de366. 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/DEPI82510856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ffd20bf8f8ae425966cb3b65d467ee7f15c2bccbfd6b4df100a4dfaef4b101. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:42:40Z), 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/DEPI82510854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c9393195b705d299f57e0c7f8322145db4242f2251042dd3f2f51dada373a6. 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/DEPI82510855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f110148aea704d6ca2e5530bdf052143885cb1b321f8be5b9644ee9d0ced86. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/DEPI82510857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ce5f039a1357b95d272d5a46ed0df73455e09ff42d178bdabdcee2928f3f38. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/DEPI82510861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc201071af5432e647fbb8b8f99e3a680e311931b5f8a9b8d62b1be98ff667157. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/DEPI82510859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289a873cf34ff74a5c590eb8b184e0d4eb97feff025002b8379fba807cca167a. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:45:07Z), 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/DEPI82510186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa83525625fcbd47f6ea36e32e7013d4c36392262f3f20138310b72924af726df. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/DEPI82510860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6bfc3b80975514c1a755f45be42e92c98a3ac0f817cc34a6c1b00f17063f36f. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/DEPI82510862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x357ef195cc88c85b8509ea3808b2c74b95100a79ce794ab2ccdd2303a31fd291. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DEPI82510865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d3ee7e0d410dcd298813da5a7ad7e19fc4333b6dcc66c8c7d140ea5f0ea3bcd. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T07:54:29Z), 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/DEPI82510864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d1e807323da7a905a6ed4bdfff3a930c358576ea6fef3f6ef0e7743f6d6836. 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/DEPI82510863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa15db4510219c5a00d4067e0c7babd9f200e76f88dea93a219dbc00475363ad2. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:20:45Z), 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/DEPI82510866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c3809ca5bba9f32050e9e63afd2160bc8b0f3559c28ce4c8f9f1c44a2a49c5. 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/DEPI82510868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x509b72bb991c14863bddb24420a2342a5122744691951fcfe2970b4a33bad605. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:38:04Z), 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/DEPI82510869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca57f17acdae20cc726bc141839e06d3c4cf652c0b55d069b1eb3a4b2d454f1. 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/DEPI82510867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7a1f58b39b81ffc171ebb3598ea3bc7897363b09f0a0278865ef730e83e9874. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:39:45Z), 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/DEPI82510870.