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 0x40881f0389bc06de49741fdfaf0e49c9224962cb04baf93e713c0ce4259972d0. 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/57f98a2c-2972-4efe-b177-272b6df092c9.json and https://artists.proofprofile.net/proofs/artist/57f98a2c-2972-4efe-b177-272b6df092c9.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 0x747bc642edffc8af25f170d21c8cb2e7c933c72d142af75112e49c53ff920950. 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/GBF076121330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2480c137915fe8abc589e6872116673a2238d4a4b3b0763baa8b6ea2618efa7d. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/GBF076524730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f87810eb753a49a0a76a7a192e2d68721bf469d96384d0748e7bac13c491b8. 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/GBF076522630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd34ad6a79cafd5d56b2bf693f8bb0f0ade6e4ef45491e900bf9d0a9ce6ee4de. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T11:19:23Z), 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/GBF076524770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e0199b0bd4586b0e2c0fd7a7557b6b92edfeb7583935383321498829b4c496. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/GBF076522800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x893b4f60582af04951c6603ec09682825364ad0111cee113a769d1ffd4383ee2. Chain 2 (Bitcoin): anchored in block 957801 (2026-07-13T04:17:08Z), 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/GBF076524800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4decf9cbb447c5ff03e1ad99ac4c5b37aee0c4302cfe723014c1153f1de80731. 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/GBF076524820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x226ba3f214a693254930103c43d8a3831f21216fddf727a5da707cafcf3ab924. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/GBF076620200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x318ac6f472c94c64305095b19728699ade6957c6a1b23bd0872fcd5c96e4a312. 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/GBF076620210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee788f6af036df0999efa137d575face972ce55c443e0acf55d505b1c66583c9. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/GBF076620220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x864f98e8c57d40aef1b72ac088c1c19eb6b8c5cc7f63264a7329b9760e8a0424. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/GBF076724430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1518005f5de3f7f32f143bb81ab9558c3653751f6f9c206ab0279446ae5b9c1a. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:33:35Z), 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/GBF076720120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1faf7f90e10f622b298ab49a50865640d87d32964c9a91be3aab77a8ec90c65. 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/GBF076720200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22232e38aac298666722c7394371f9c91edee261e3d44b607785a535b8734dff. 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/GBF076825210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51019e7c595638243170b371da9db9dc2f8cf67b837fcfde19b65d9c617ec5e6. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GBF077222340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0f0bcf91dc40dae4ecdaafca95517e13c836281dee3f1e36ab3f5a656ec02b0. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T11:02:23Z), 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/GBF077222360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30e4a22914d156e78468fa01e1746bb2efedbf345b90047ee60c74eed81bb834. 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/GBF077222380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd5d3d0c369a7e5d9d98346babf1ff58ac8c167c340629b14d27952927cf68a. 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/GBF077320790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38eb8b40d8d52ba706755a8946e41983e01a6ca1db1dde25de4615af4cb1be66. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/GBBBA7360072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288c0ec68e92f905c81a6226f724624e56002d3c2edb3108316ee030c55d12e2. 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/GBBBA7360083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15388b0b5dd8ec020f70c128e5d444fb4f300f4b6493a05ee972ad3f72b780c3. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GBF077421210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1993343aab4feb9bf22525b0a3293d9893e30acde4abeaab7e84a6c4ff0e8084. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GBF077421220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x823db273e425c57b2bad66c505b8358d64aa47ad75c41fa8a5c26b904105b38e. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/GBF077421240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84012b29f40c77ef3fa7c91baf54783d7afffa51efb0dcf97f8d05255cf6ea0e. 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/GBF077421250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ebc08e8e86e718e13c40eeb63e539de13d3deb85ee4bf3ac8766d9bc2bf3bf. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:29:40Z), 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/GBF077421300.