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 0xa112b885595e82973daa047a094f4eb9bbe7f38465b9f98f0031eb2f12ee5071. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/73f87f48-40fb-43cf-a17f-67d2a4487b78.json and https://artists.proofprofile.net/proofs/artist/73f87f48-40fb-43cf-a17f-67d2a4487b78.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 0x3d2e28f8a45f360f2b8a7d4bf53293336e7dc6d92987d6309de41bd6d247b057. 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/SE6RU2213701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4810138808ff6aec05d27727a9b4e9ece2e479d21301e34396be9b8400d3a92. 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/SE6RU2225801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e8f19745aad22a6ea8873d67d1c32cd570488c50a571a20966403b869624e9. 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/SE6RU2143701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c8ad81dc93912561e0af092ee0c2ba067e3ece89c559e96e0906d00e2f0575. 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/SE6RU2226201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b6feacbf936eff351f4f0fc4c963d5686fb250d7b549874783dda78e04a3fb. 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/SE6RU2200701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f464f10e45fda69396a184992f91fa8a0c2f340b45a331c37c809f24bc106a7. 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/SE6RU2231701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x463eeb80c51e3e049d63c66b892d979c10fbba1b83ece31154b5e185b92c4129. 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/SE6RU2226801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b183c0361c6195b985ffc69664deadcb4d6f524078c367465bb9eeaba846d5. 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/SE6RU2225001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb312eb3f71d1e2851e510976715dc8f5eddc9afea137f5fd77fb943e3488ba74. 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/SE6RU2220801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d58ca4632d769e1b2b3da05d95730d51ea5c465cf43616c074636782a60a734. 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/SE6RU2220701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2078d82e8fce25eea2e6b34bf6460ec9d18a778375cc12bb103000e4155958fc. 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/SE6RU2202001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f08920140404cc5deeef6b0ee2735d46725ba562b3446515262689bf32ab6cd. 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/SE6RU2148301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d786de6f18edbd8d42f0d983d0dc2fa4855e7088b07dd6a14a627a966a9e864. 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/SE6RU2118201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d02223e3af4b3e9a06c57531dabf3617e0d4dd4434aceb235f1eb87ffd330aa. 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/SE6RU2117701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2d7313389a4aac4cf6aaca74ad154ab6867b36d6f0938ebb0b8a9caf0ba560d. 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/SE6RU2103901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7020332516ad4a7f0f738031a324f1fef3611663ae708bd470a1ebe30d967bd. 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/SE6RU2122501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9b96decdbbf59bd453a9ae421cf4fa5e3a5ee3a65aceda132c7bca80a7fa354. 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/SE6RU2126001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x463eeb80c51e3e049d63c66b892d979c10fbba1b83ece31154b5e185b92c4129. 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/SE6RU2226801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d786de6f18edbd8d42f0d983d0dc2fa4855e7088b07dd6a14a627a966a9e864. 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/SE6RU2118201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe607ce2e4cf01674e990291c4e9adeafc50430b34a3dc7feaff9318e18c5a24f. 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/SE6RU2022601.