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 0xc2993d53c4704dd3435a3da2bd8d558a85e13ecdad9996594964b79f93fd7c04. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d84e08aa-dbde-457a-aab2-5a52413b63bc.json and https://artists.proofprofile.net/proofs/artist/d84e08aa-dbde-457a-aab2-5a52413b63bc.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 0xb3244c59efe15f4c11e7a4b726e3ae771b4ff44b1e93ec7bd8ad3647633f0eb4. 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/FR9W12134176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x739676322364bc33afcfe6df0bae1c8f58cd8300ae7f39fdb9f78dff428a8287. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM6P42216016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39e7b342a3fcabe3969e3a1ade216af70c3fcaa0d8484f0974f11bae8961609. 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/QM6P42216091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x184e20b2f9714831062ff416ebd199ccec1bcb9a0d491b18f45cab5fc400b0b2. 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/QM6P42216062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3244c59efe15f4c11e7a4b726e3ae771b4ff44b1e93ec7bd8ad3647633f0eb4. 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/FR9W12134176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e609c98d47d27e804ef99f35ba6f98546c68771272b85cbb1dcb027ee9d4ae8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM6N22213480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43359e66b1398f3013688d59b89985f548fdd421cd7125eeb0094d3d727ee0c2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM6P42216014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98f5a90a7d0f63e4e935b2d18e39e40c976452898ed9e680a1624bc2f1437773. 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/QM4TW2264709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x739676322364bc33afcfe6df0bae1c8f58cd8300ae7f39fdb9f78dff428a8287. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QM6P42216016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f33364ae6e66d0b53667c4a66c3da2400500be6a6a210f527ddf5f1ad30990. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR9W12134175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x629673378b1d0d169c4065a0fcf741a46f401a1dbffcaab1301bfb3dbf0a4ac9. 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/QM6P42216054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44959b437bd233fa4d2f32ed22f32eb5997f76206327ca82e092a9c7289388d7. 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/QM6P42216069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39e7b342a3fcabe3969e3a1ade216af70c3fcaa0d8484f0974f11bae8961609. 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/QM6P42216091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xace94fc71889a117a410785132c79c5610ec274489d8f515e209e9281fc29dbf. Chain 2 (Bitcoin): anchored in block 957012 (2026-07-07T08:27:05Z), 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/QM4TW2264691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4744304af6dd93af7fccd758355afcacfeed1f84fd90ae15a015d8d610ee059. 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/QM6P42216094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c2ff3a961634aec1272de5b85af38390b8f4d03b3c3b1e19ac69d0c1eb9eb73. 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/QM6P42216072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf299f53780a5656aa3a68064f5b4056b00f62d55000d635ba4955ba3de766a4c. 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/QM6P42216108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39e7b342a3fcabe3969e3a1ade216af70c3fcaa0d8484f0974f11bae8961609. 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/QM6P42216091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf299f53780a5656aa3a68064f5b4056b00f62d55000d635ba4955ba3de766a4c. 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/QM6P42216108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44959b437bd233fa4d2f32ed22f32eb5997f76206327ca82e092a9c7289388d7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM6P42216069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e609c98d47d27e804ef99f35ba6f98546c68771272b85cbb1dcb027ee9d4ae8. 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/QM6N22213480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98f5a90a7d0f63e4e935b2d18e39e40c976452898ed9e680a1624bc2f1437773. 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/QM4TW2264709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xace94fc71889a117a410785132c79c5610ec274489d8f515e209e9281fc29dbf. 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/QM4TW2264691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3244c59efe15f4c11e7a4b726e3ae771b4ff44b1e93ec7bd8ad3647633f0eb4. 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/FR9W12134176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f33364ae6e66d0b53667c4a66c3da2400500be6a6a210f527ddf5f1ad30990. 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/FR9W12134175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3244c59efe15f4c11e7a4b726e3ae771b4ff44b1e93ec7bd8ad3647633f0eb4. 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/FR9W12134176.