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 0xba212a5493754cc8a34d4859e6890d421146475e7058baade7aaa7662353d004. Chain 2 (Bitcoin): anchored in block 953758 (2026-06-15T07:48:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b466e578-1d89-4c4e-910c-6b656894a386.json and https://artists.proofprofile.net/proofs/artist/b466e578-1d89-4c4e-910c-6b656894a386.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 0x2b9837184a12bfb19e9cf26eaccabde3a11d9760e861ce99cd8bbfd8d62c9350. 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/KRA351504449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x614bfcef9008118efbd852446d69dcfc0c39375a7ec0eaa73389f56de3fa3ed4. 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/KRA351504460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a71264a66aa0219f5928d5119a6afdb840a4086999a538d429fb55be90bd98. 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/KRA351001228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a4e84d2dc390afee0ac601596db830a9e1ca1f5b6b3a7c17ae7976d49949dc. 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/KRA351001229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f81ce7559cb017f3a80eab280010072dc4fcee013e339a5e431b9ce83503af. 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/KRA351001230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c8cf4c602e815e997d3106ad78553941a780d70a0ea06eb79c85f50c7dd4c1b. 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/KRA351001237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x830a0c7c3c1e0c12e4944f302052d0f786bc564f11e47d01bbfee13369f2fac6. 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/QZF452022598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d2d23fc4f01f2cce5262199c2c33adb7dbffd5b042a4788add19527d6684d0. 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/QZF452022599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6207b88fd068e8debf1149526103294ec066ac03775b410c0f6260562f948cdf. 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/QZF452022600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x536a6b7968d43b26e9d110ab990b1dd422375c9281978080bca4973b404cfa1e. 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/QZF452022605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc33a52fccc8308d342e7d5aa2f86afba583cbad4e779e8eee361b0e52bc5f338. 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/QZF452022607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf15555d660831dc9763098a112874b17d55b7aedad77ae5c9078edcf4c176392. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/KRA351000452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d71f4d67b77812b85cec0d548e60becd2f7228775b1b493f7cc9402f9be048b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/KRA351600198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ddb9511cd2b1479cec30c6dfd84a2b17db7459aad50a75085e0ffdd99b76045. 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/KRA351202581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57707edfa3ad30b71a29542d0702b4de7739a4fe673943d38be2c8c681d89abb. 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/KRA351202584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x614bfcef9008118efbd852446d69dcfc0c39375a7ec0eaa73389f56de3fa3ed4. 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/KRA351504460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c2749ac5c3ecba678f55c48231c83dd510971fa726dcd60485b4727f341046. 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/KRA351504467.