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 0x09b657f337e3cc0d8548b5596a29977003c12927f4aea10380fa20551fc2c1f4. 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/6e78f258-57dd-4d27-8907-4125e86ec03a.json and https://artists.proofprofile.net/proofs/artist/6e78f258-57dd-4d27-8907-4125e86ec03a.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 0xec5385811e5e76e29d2e761177cdbaf223cfb88a57e25dfce3df203f3a450a7a. 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/GBLV62201157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1d6d544d8b50323f7900ff34fa8fce3db057e888f16913700c0d50b0205236. 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/DGA092353592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54089d4b1ff4f8e41d4184ef180287657ad773bcc820821fe3d14c51a401b7de. 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/GXBDS2303171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bab52f5846b98ccf03062d000f5482b6d1777b721f53682ca3e26d216e95c49. 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/NLT2H2300757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf81fb7e3e53f00026b5798cb24ac5779dc64567f935654912a43cec6f84dfc3. 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/SE68N2300110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6301d04a723839ddb398870e8f0643ca59819475b0f0e21d3b86d0869fd5a78. 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/NLT2H2300581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa17e379000d01f6ce39482af0a6f043ceded0f0d627383fb3d8894a2477ab324. 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/NLZ8V1801020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x871d461ba90c60e630a0f4b27f5a3f56f8ae1c4ea7468537e7787a4cdc32a4b5. 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/GBKQU2357458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1b9c95e5300ead325cee7f4ba3a7d7edc6f6e179fae3478a4f91ffacc072da7. 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/NLYK92300067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd369a7127e4abbe45558324bd26a40d751aa896adb71126a67a3769a9821ffa6. 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/DEUD92312784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a3e9263db94fcb1d76bd447aab6f0f235855cbf6130fabc223bd33bfe2709aa. 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/DEUM72300667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab570aa1ba109bc96d7d87f5b8c183c488fd6c85c44d92f96a68ab3308d9858c. 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/DEUE22315997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c4aac8c4d2effdb2942298602a9325c3c2e2216303bd2990ff1ab3dc076c641. 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/QZTAT2272408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b187cee7a13c7421f630a4120c49f1310b9c5812edc142a545866432a6ef23. 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/NLT2H2200716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d7e81209fd91df16c49c4aef81333a5e8594608775d5e676a1bbf71c05909a5. 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/NLT2H2200624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbad73ac6628850a4da6ed6c15b1aedd1fabd78f9f70c76d2eeeb0ba4eb6f28b. 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/GB2LD2210008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x110b026a6b8d161f2ad548790dd97efec10a8430962f555e452961604ee61287. 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/NLT2H2100909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b37250fda41f1b91414efc1a35124160bb4fb4d1c4db87317898a499bc349c8. 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/NLT2H2100703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db970b0a544001ef7826d810bc0f88706cf455b2ea78166199c8c16a6ab5ecc. 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/QMFMF2012680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9e5d5f04f9166efc12d64d63531fda7f4fa5c98d003c51e47cf9fea86ecb820. 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/NLT2H2000419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a4dc7676d65f5321c1d5b29a2e62f568a61c01c8fb492b961c2f44317bae85. 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/QMBZ92066059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e21bf1e192527c94caa2e6d6e0e71753f9fb998fbd501ba4ccf9ea7183c538. 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/DK4YA1914201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1385b0db26038476b85c0be3047b2d4dde534b7f8b82d6f0bbff09eab194a5ef. 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/DK4YA1914203.