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 0xc9e73ee3a857271adb39afb8aa52b5f564043329a3af67fe9e13f5249ad51de8. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0acdac85-2047-4a9e-ad7c-40980542bd07.json and https://artists.proofprofile.net/proofs/artist/0acdac85-2047-4a9e-ad7c-40980542bd07.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 0xd2788b093949d4278ffb44bce5629c7216a7608b44362bc3ff82ba1d894e3ba9. 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/BXT3G1900046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0dc7abda484877ee59e1b1e4cf64d6abbd0fef7e806a86a71b32543ad250bfd. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/BXT3G2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x602cd2aa1d5a5dd3426c1528b98a160b09b939236c077a8685f22fe358d030b9. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/ES48F2300110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x361386bd32d46040e95d58add6b813072b38ff3496a0199a2be3283793593e5d. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/ES48F2300112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a47feb6b299c8eeed9e61b8d35f775a83a2d1ec1159908c783cf3f41657bcac. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/ES48F2300118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49882accb7c1efba4c2a6bae8f8c483c7efc6ed0d3b26b4621b6e60375876553. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/ES48F2300119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2f5c410e2935803216b88ade81dd13f6bd8b76680d9e88e23b9f212ed323f17. 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/ES48F2300121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a4299a7f085ae4a2e6d2875c2b544f48256fd6b2c36e482154b0dc6ec5a4715. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/BRGCD0600303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa70199add602f721fbbe96f5e869aadc7dabff972b55896b3a9a029a13a9e1b. 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/BRGCD0600306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf61db02f01b749f363ef68fdb21d400a9a3206bc3b77b728fbfad5dab5bdcfa2. 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/BRGCD0600308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa01b574137ba02a7344997bfce287906542cb5728907dfe3c8486505c51931c2. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/BRGCD0600309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8533b6e9bfc52abb7110766970d24b0ae0d6519ed630cd053d99282d41438523. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:04:46Z), 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/BRGCD0600311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f4dc900d0e82d61dc74330e4cd03362f4fb4d58a2e38058fabe0a1c57a726b. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/BRGCD0600314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbded978ee9de37e0683c13be2b421d89a5e47d57fcc7ad368ecb79be2b895fd2. 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/BRGCD0600316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979529bd60fd0ecfdcd42d990707aa13368b82ad3b1538936e554bb1501184e3. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/BRGCD0900206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd40ac90073c7eb84e189107dadfc9692342805f6d1c711dbe07328845037726b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-19T23:47:46Z), 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/BRGCD0900207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x614074999097b158955f66366e91ea34ab273498649f5ef4b22e696a08c30b5f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-19T23:56:05Z), 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/BRGCD0900208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108441478c27c03130acf1309c92ad38aeb53e5c31af61767131aa3251975578. 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/BRGCD0900209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad8e759e2261d31006841d6c0b015fb54397a7f677e6430d48ae3eb9591ce601. 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/BRGCD0900211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x413960e2cc0276ae74b4639bde5205a831a0dd02206ae7b8a2ea6a6154bdc6af. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/BRGCD1000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc60db0f7a86cd3a403b461fe28be2782fcc25526ae165f11a48ef1c32d0ab4b2. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/BRGCD1000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0653d46d7670bc823e1a2c51ee34da55e207a6875ad4b8e13fc428cf94ef12a. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/BXGET1601143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e76877c68b1bb35152102ae06ff94cc2c95f87a89ede42c57e71be06776522d. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/FR10S1806181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x603486446bf5c5e4898f868c1b5fa5163f685324ab612cc6342687cba6b08c89. 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/QZEQU2217977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x355ad0b06665110ae7f4b920a3602d095db566d305cc1d4d2df48b91d05a4c58. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZEQU2217989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a774ab6dcef2b3228118d2141a33a19ea9958220f1393a9f4f162b480c59b74. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZEQU2218126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdb6c369d64328c0bcf8b48c47bbdd2376c9cbaa81cb0e9d78f0e8adf2842b83. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/ES48F2500627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae2dbc5ab763614ed27984a5df342498286ed5ef5c21d3b8e877637800ac255. 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/ES48F2500806.