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 0x8612f20d113bb3f4b8a0fa3cd998be7a08ffffaf2c6929180c02c9bf4bf35855. 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/5acae825-e1cb-4ff6-9514-68766ae7e7d5.json and https://artists.proofprofile.net/proofs/artist/5acae825-e1cb-4ff6-9514-68766ae7e7d5.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 0x197f64195b032f399d20fc921537831a63c8e3ca0b4b6ad59c30b1bf48ab352a. 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/UYS642200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294444c3436385243fedcafaf5029a49695a9135c2bddaff0ecf79cf9a7e75d3. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR96X2273483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c9927d46d41342dc12f582f04b9213bb93c624834a443354684cb6a7d2bb67. 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/QMFME2171620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a40f05dae2819208f7f92cfe0df955aca6e598456b30f593e2c134f70c6edf. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ES71G2334358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b3aed6e9a0b8a8458ad5769a873d47c344fc03ab8a19593f1f91934ef5b68c. 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/US6KA1900495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8794814e8cb09673652321c102c8af4190cd37cdb9a82962b5db6309260be091. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CA5KR2462197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x670d9ca2fb2ccf7bdf9e4e3c25eaa143b7816704b40d11da54a94deee734827b. 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/ES71G2412169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x819fd379e8e232a0930a828afb4aaf60bb57114bc6ae866eb1f74e4dd227443b. 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/QM6MZ2411127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fec7316253b8ae77e2ec2d320c51ada13ca0d09e561e933665010d7b4ee27af. 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/ES75E2308357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7293955e439f83629b7ba05c7b6f7f2891078abe3bb7edf1801fdf7cc8bf67d. 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/ES71G2400353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc03864bbde647416aade3ccd80a21ca707b78ed482a824b8b9d7d44ed9c17c. 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/ES71G2320410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x002d907d3049ee2224dd0db406fc5e4f3ba4b350f5cbece9b336d2ec187845a3. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ES71G2243319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb56e6bfe11bb24af037ac42d1da3ba0bcdd08df6197da0df6d6ded8f8e0e90fa. 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/QM6N22265303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa598276d1b333d823ec05c68fad8e57b3b03b32816768686a45852af21b94fa9. 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/ES71G2153182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ccdf054f2b3d618744f2c0c536395c3c5361639709dab2b609a9356b6ce31a. 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/QM4TW2181669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c60654a8334c8c39f04e720095eea529d7b9a9b6203c3fe42aa19f95d5f1d84. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMFMF2005868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079487a1964300c33c02ec10ccc9e368c9f8c302c0e64b2969de4bbf5da21f59. 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/ARDJG2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294444c3436385243fedcafaf5029a49695a9135c2bddaff0ecf79cf9a7e75d3. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR96X2273483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc393c04a07b9047ea9d9b5dee1bb3ee3582498bfb5c740c2e904fb9ff18dc0d4. 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/QMBZ92004806.