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 0x8b949cb3c2b633ead50e804438e5578fed46a19ee70b76538001801e41bdbdd9. 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/bce7bdc7-fd04-4db6-9dfe-a0534a9003a5.json and https://artists.proofprofile.net/proofs/artist/bce7bdc7-fd04-4db6-9dfe-a0534a9003a5.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 0xd54936ada12dd55a120355a0a0b8cb83f19ca4a7f34bb62b9185c2c32181ab56. 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/QZNWR2229177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde2c1b2ed1fe4e2a6a65b99f31bd8fcdd5f7d74edfb86683315bdf158cc4e8ba. 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/USA2P2439592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd29d22e283eec398cd548963f275f0225950732b484a583b205945c159425e3. 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/QMFME2302294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3eb4f43458693c163e9f91f7f0bf5ae2e016644e8ea6b203800358aca7878c6. 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/CACWV2380560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f5267a136908ad82d9aed779bb1e346d33aada2a413820c434bfcb72575014. 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/LBA0Y2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x192d41cc923d307d51a9ca6e08e5536bbce5059498e4eb1dd9ab8481860a19e2. 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/LBA0Y2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd29d22e283eec398cd548963f275f0225950732b484a583b205945c159425e3. 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/QMFME2302294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x162e77aef3c102fac4e4cfec0d2d8862876072030b03a236c1453063c11c13f9. 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/LBA0Y2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf00d2fd10c16608bcc4bfa98c15cf3c42a6637e26eb84e71f62262f5d19365be. 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/LBA0Y2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaeaec68fd32a2748a647f8c4dec0dd447c6a33735cea4a01328dd5d75a14e10. 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/LBA0Y2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9bfdffbcf4eaf9aecd105303428c795784954fca45ff65cd83d731523de6868. 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/LBA0Y2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2befc355cd78a263a491ea905d0c0fcc8e8828a5436ef11c84067e3a6028443f. 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/QZZ662333957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8480c5d7fc476b21721e364ef603a9ea318bd4704f8c1ee8c7ef71659e688d70. 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/QZN882221794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x761620e9c84e12683c808edaeffda9a11cf14b48dddc086143683d0327bb0809. 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/NL8RL2303922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ff834871c2dd87d4ac38cf114d326dc2e5651949edb6e624b87411a6123d686. 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/QM4TX2094137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f5850df9470a4f8b5a45dad5f852e741f70d03818d8b27ac7f5d0ccc046786. 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/QZHN32330824.