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 0xd26a6d9815430d54bfb223854981fa073c28dc7be4ce123623e3d1c66117b475. 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/1b920d89-48a2-45bd-b145-4df9bad9dc41.json and https://artists.proofprofile.net/proofs/artist/1b920d89-48a2-45bd-b145-4df9bad9dc41.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 0x5d14306078a577eca00681f382c736699bb895f4bbdda1f2cecdc9199522c6d4. 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/GBWUL1950400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d3a12902db5e103c79167e8dc5ede27dab3a00068d5bdbc067128a44742494. 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/USA2P2106948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x359f9534d1a54213891422d244f39fbd129a0e9d3ad56b1040a01d3526607e90. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/USA2P2016423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x519d51cb3e8fcf9c8462909b9349677a11b29fd217cdc0a1073f393406a2af2a. 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/QZWFM2392501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e6ef796de0a9b9cecc090ce4f1fde4972cc943de2af46e3b752db8534066844. 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/QZWFM2392502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6968dd9cec3f5a2a56cc621d9819054d7bf27cb9a3cdac20eff5b6874132ad92. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/QZTBF2352472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24af48bb1382e535f3cc3352c0fcf4ee4f10dc1cf91c57db1c9e4640999aeb32. 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/QZWFM2392505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bb87f3f4eaed77a6cfb0f0359391fb6c5238dddb35de1b346dd1ca56a85390d. 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/QZWFM2392506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06621f914c7aaaab15c46f0cba777811139e07c1e20b51a1328e88ded157cbf5. 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/QZWDD2457609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6968dd9cec3f5a2a56cc621d9819054d7bf27cb9a3cdac20eff5b6874132ad92. 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/QZTBF2352472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x775acd4e9f35cc4db18487e7c5349b2498e2eecc5061f6a1ff9064cf4ad75f21. 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/QZNWR2361043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8522c33fe1ed46af70e44dc6803ea3e6787032d2e4184ecc15932fd372b74bce. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZES82319793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4099cb13ca65c32d1a41388afcdbf7c7de80cd25ee924c1077797be018cccc6a. 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/QZTBA2275235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb66889904ca3b87dc68ebd4192ad0ceb3faf02de2247fa07a1f9f5f728b58795. 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/GBRKQ2111296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfbbd8fafc649c5d59b9c6d378083bddf257e2003f6b232de9b8979d902560a7. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USLZJ2181059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ddd9ff1d7e24445739b01b565ae1de4bcbfcd85640da53b848f5217d99fb9c2. 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/QZFZ61989070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4335f508b8457c0c0751d8fd38542ab8747b58822d0bb5483534abacebf109f5. 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/QZES91973021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22de0277d84b7280f3174d4e93d991ffacfe7ae89fabade03ac01850fbd7425b. 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/QZDA41905694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf80d6948f3197459a9bdfdb50b80215e2a74ef15032866822994fabd8801df8e. 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/QZES61850628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc78ca99bb62a7bc21de54195dd3b8a7df5af1938e95fd1d899c54d5aabdf2ea2. Chain 2 (Bitcoin): anchored in block 957013 (2026-07-07T08:31:11Z), 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/QM4DW1880554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc445acc3409372ae5575b138c6688b601b63c556796ab20e46fd7eb9e5ab08ad. 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/UST8K1790165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d2e4f0b52158e8545e22644b6f6d72de6fc376c15695682faa23fadc0516628. 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/QZ8LD1776870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ec91a0080b7ac3b245cde96d729bfc7256fcdbdc91878af3bac9af35e0f21d0. 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/QMPKX1705713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe3d04cb309fda4dde9372c626250317bea95920d8b790eb52a77cdb8aa750f. 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/USHM21688643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf45115be0886ad395071752f52c8afaa2830cab4bf0770982ae6ad4d43f8762f. 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/QMWZB1610304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c7f95fff69042c66f1a4f2447517e685f93e7ad468724f467abc37a00f63740. 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/USDY41604635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa1a080358b3b4b38baf1fb17c7aad61b00fb553b391a3da72caa671dbcff92. 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/USWB12305645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e4f520a7cbe15978fc2e41a39e539a744453c048d31f58512d74b35566089cc. 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/QZ79W2000045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d3a12902db5e103c79167e8dc5ede27dab3a00068d5bdbc067128a44742494. 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/USA2P2106948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x359f9534d1a54213891422d244f39fbd129a0e9d3ad56b1040a01d3526607e90. 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/USA2P2016423.