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 0xc2bbded524fd07c1bf061bfa308d1b21765e5b7f3e6e7a3d7b25fcca301bfcdb. 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/6ed7302a-55e3-45ad-92d7-d533f9e12ddc.json and https://artists.proofprofile.net/proofs/artist/6ed7302a-55e3-45ad-92d7-d533f9e12ddc.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 0x1e2a84eb2ff8febc0be640c1844754bdc080c7cef1bbe424e18c804b5fc8881a. 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/QZDA51967936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x789fa76f0492a22845e77846baba064195c17184529311e3fba46b6305a0f162. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZES61991746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x999b08224ada472354f7b94207d2c4d62b7f769b235736a990477afad4b68f86. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:04:49Z), 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/QZFYY1925024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e512a98ce1e9ba790c5e2bbf353269f476d1eea815a6a5b7850f651fc364267. 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/QZHN31918440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee78b0acd716b91e3e666e76347d976d61bf3224fe04033f83ed994da5d8e35b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZK6Q1995152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d758caa30684c7d5d306cabb1412bbc2554d801ad69338ba4ef1f19595f95ec. 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/QZFYZ2015381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd74918c72e0a502733a211c14ffce3bada96faf5af9bb469c85ac0bd8498f36b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZFYZ2244238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeac3830178b154549b760c10eb2b94ca7372b60c71d1b6007e85e84d92a8b82f. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/TCAGS2241066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd0029789588dfe9afdaabb59080ec356c92e9045f348a26e8794e623a045c8. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/TCAGS2351251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x940e4c8334025a502d8f1b44fce2e2c54cdcee881ef82295b345feea4d0de4ab. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZFYZ2467078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf94252cd2276e030fee74ee61419d1bc912f76d2a136ebc641372fb2ffc3643. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZFYZ2467079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ead23e6f5344f7c9bacedde08fff7ba38ff1212218ac6a53ceceb058196e4de. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/QZPLS2473341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44b18e0557bfc40e04dca65155b36b1292d0ecf48a7b6a0a0fda1ae3590abf79. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZZ7K2432400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d7ac19eb614d4425cf781319e0373cbae84ea0b724375eedb9bc7d9033e303d. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:32:59Z), 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/QT3EY2490346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74805cfc1f3bba58f73f0c26882ccd63cd2fba653b568c2c6f6869ac5edcd583. 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/QZES82510722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2336850063530a7e448c278be20526e3ee8b2a456341fd2f15d5b0b9bf6089f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZES82510723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c12ec2725df1daab615bb6eaa2274c99e53549f0baa70e327c03c45563150bc. 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/QZES82510724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x848dea93adc32a0f941a1014daa0fadf6426e5d29b39ba6d7f640aafe06d5070. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:34:13Z), 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/QZES82510725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a47ca9ade19c40dc336b91122c48006ff50b53e43ecb5589eca3f5828f4fd93. 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/QZES82510727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7872a7c08794a08bbfaff3563ebe16f08c75868af4d4c0930f81358a85a90bd. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZES82510729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x736a29e7abc667c6aee9f8420e8d122085e3cf3e8450a91ee62afa7c506fd57a. 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/QZES82510730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6697824d4ad8823f958a9bbace260257f39162cbdcceaaebdf3f829404e323c4. 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/QZES82510732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x315e5ce20eeccde135959a3cbd8f7027cc2b59dff2de3ed37e44142d923a3ace. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZES82510733.