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 0x32fe28ff4b7aa7ba02fb7a7530a4b77ae33e61134b681883fda5d5ac57eb3631. 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/3e096f7f-ff49-40b5-99b7-743bc8a14fcc.json and https://artists.proofprofile.net/proofs/artist/3e096f7f-ff49-40b5-99b7-743bc8a14fcc.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 0xa873189e20447aafeedd71f9c36e7509734bde98b18eb7d062e3a677f9b1b023. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QM4TX1910407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ced6a821f7800534e28ad47a63ad4325e1bb2f4ce39e914ca12cd65599e1c8f. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QM4TX1910409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x393ab7532acb930424739b01061ddac2e90abc65b16dbea246188e25e78670fd. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QM4TX1910779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ab4359156fbde230b5b4e5209e42692213c4e00be87c1ccdc39b8c820962ba. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QM4TX1910781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b363befcebaf8475675f7fc6cdbeb0fada3b585d0446af4586d4c5d174f4f7. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/QM4TX1910782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed1fc6a9725966c63505ae054b496046919630ded73de26ec0931354bccaf2e. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QM4TX1910785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x525d8e98d5583da483c4f8a952b643a3462c492796f1b82bd4743df7a6e626bb. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZJCP2100042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e5c2816971cf043996acd914c4afb94fd632562dc8d0768f9969cfed2c61c63. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZJCP2100044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x284714f61791d2b891aa1e95fc398807fe5a27ddb668c46ae96b9bbdcaa6bc19. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZJCP2100175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de8c0ce931a7afbed2112592181861b6670b96187f6820f5adc9a2cdffaa7fe. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZJCP2100176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b4d3b26543ea16c5cb8ac90e33cc51873a8a6f3627600d0f59b14b2d86db7a. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZJCP2100179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaf9642fcf342574c5a8662c85ddd0f1a84ed9297e3c4dfb30f356c4f2619c94. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZJCP2100180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa27820bebf6c02598b0d9a78e84841587fa29d976f9e6f0e966e4db127fe8b05. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZJCP2100181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ffcbd56e523206e8b2254aa54458aff33e0c09d0ac54da1adf0108752f4d517. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZJCP2100182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd49675ff627478327f0ab9bdf40b40905b923d52780f9fd5cec6751157d463ce. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZJCP2100183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x964367dbe347bdc58171cf78a1debee68cd4b5be9140a1d6b14c01b77c34e25b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZJCP2300109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x647772644413941d9fd830039eb743799b6db28ade8179ec891c68df87aed785. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZJCP2300110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x146b7aac2426adc742ca4fab9fdafdeab88f0f86d141da1385db9d3571eddf85. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/QZJCP2300111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6305a18c49a728395c7f0204416de6fde20c13c845452a46e81fefd58dca433a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZJCP2300112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a99cc2dbf04bbedbd8c78014e69b1dbf1fa25ac9c0780972ebb0618fe4c622. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZJCP2300113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c5798fec85a9cbccb8235ddd6da348a6e3094b8ec6876a55c629b96d94319d. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZJCP2300117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x397f689a9776ce57dade5eb867b5d66e5f4ab5fb7538572081e07954a7f1f929. 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/QZJCP2300076.