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 0xa227e9946e44a68c2237fa49d47007d0a69eab05d34dde579f26681a07f2e0e0. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/53aacc79-d98d-4d45-b74b-ad8b71476023.json and https://artists.proofprofile.net/proofs/artist/53aacc79-d98d-4d45-b74b-ad8b71476023.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 0xb592b05bc6da534da2766a3078e7d68c9f168e18b37655ceab98e6fd07f1c476. 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/FR96X1970183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59d845c22359cc0a19628f2a91544f8320842c2ae24a233e3cc69f179b59d381. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR96X1970186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5a1b475e8a666d1231b48fa935eadf18e6f1f6ae4e5e8c8ed7cf0757629dc10. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FR96X1970190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f5f058fa8d5ab91df7b6ca99e171d78563a0d6084813640afb392a574319e7. 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/FR96X1970191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf20daeb573f60ab710ee5004c1e0e9f8de530e147b95e48dfc4d808ecb241c57. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/ING501802685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ce71ea3178035660de025a92d84b434e61817d63efe3750b0628ef4a1d979b. Chain 2 (Bitcoin): anchored in block 957531 (2026-07-11T06:55:18Z), 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/ING501803044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe177609f400f80d1a5f11593ffccaccf21b429ec6318699fcc9837570661f057. 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/ING502200086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16a3dbf4d9ab0a3eeb46ca849072764c3d88f4958656dd75c675946908b2a300. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/ING502200088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd5a39cc91594f23b7776c8c7e64aae0ddb8eeadf6e422d75d8788bb31e1ac0. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/ING502200089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff5fa63a3af69ccccca0b46eb6a45599c580574a98d29a522e0cfd7ba4a08f39. 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/FRX201999693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44693290649c4c8b8b2db824aec9045e23f9163ca2d51e05ac93ab48df4909fc. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:35:18Z), 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/ING982300072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74995d68bf398b6f9255d74d9e10332a4f216392a138a33daa67a6ab2bc9dc7b. 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/ING982300073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eefc4aff805c225070bbb2fc52a637200ed5aab9be71e3e1fcd1f5b96c30c82. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/ING982400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5afccb0a80c1580ac4b332f6f8d69ce9a90f5d5defa881af7deea892b866f03. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/ING982400069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaccb251ecd51171d97c42b3a64ae15c71f223842bed767516af7da2abf08b8a8. 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/ING982400063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20edd6401b15108ebc1bdac4a6f10dd81e2f80e3d1d360e6dad8047fa2df1c9c. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/ING982400064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddb64f3e2ea774199cf289e05155630cde6f502d92222a4acc6763d0bb65b3d9. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/ING982400066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c992bbc2bbcd544d5a52976c613da33522bd3bb0da3150786892c004566b92. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/ING982400067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x259618aed28bf9d093636f053c6c7bdf9d55c64876b7bb501aa47164a482935f. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/ING982400068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5afccb0a80c1580ac4b332f6f8d69ce9a90f5d5defa881af7deea892b866f03. 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/ING982400069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2437bc3e05e66701fec0bc7b4f821a0cddeeb373c7ef9fad7bcc38ea724c714b. 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/INS182401521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30dcfeea9f23ff87c8dba802b01cb0660f3293937a8efbcff5535d1fc5d40e96. Chain 2 (Bitcoin): anchored in block 957526 (2026-07-11T06:03:28Z), 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/INS182401399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x651ee013c0eb21ae8d5fa445a806a3314437f86d7242bb5fe48fb3b7f752e87a. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/DGA0S2412310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe24af06114ad4a341b82646eed8b6c444721d365e3e443d50f27a2bd9d61ad57. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:39:29Z), 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/DGA0S2412311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6be5682c6840624136abc91fffc0bc8a71d0adb6a89963ff0e7b241d2a94ed18. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T03:58:40Z), 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/AUBEC2583567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb4195d0eea26be9948815c8f1a2a1d4b1ef1eb181c3f2abd8120bf0859b214b. 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/ING502500264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6228fccc401307d80984a26bb0ca49dfb3947abc3d3c1355dfa63381179e6e02. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DGA062545196.