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 0x6f25c23cc3cb5a0a65317fcd2796d452b5512a6f311b406798f9a3f6b58abfad. 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/b7ee3442-3eb1-408d-93a8-6b13b51ff369.json and https://artists.proofprofile.net/proofs/artist/b7ee3442-3eb1-408d-93a8-6b13b51ff369.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 0x19e1a6daa074c99a3bd776752ff44fd4af53f40044858d737d1d86de7b1a81b2. 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/GBBPB0803382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e939afd593652aa1540158d462e0fbb827db254571dbb8a86ef9c8a40c44361. 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/GBBPB0803386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x138e9dac76bb3d1469aa298478699e147ca4d4948482663c668ca29eae741270. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/GBBPB0803387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf3ca77ae500aa6f431a696f78b3b1ca65e898420c6406f33cb18b8d902a68dc. 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/GBBPB0803390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e69e33a450b27d938eedd4f6a8738ac117291b19add71b30851475539cfd50. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:08:31Z), 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/GBBPB0803391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69fb122b9f45f64301218d1c7af0f42215a0c2499625ac9c7368e871ca387bc1. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/GBBPB0803392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa2263d8cea576668d965af42230fc02baf5120eabfe697f7655bf3c63109735. 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/GBBPB0803393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe237402b6423f2fdb72721cbc62683a3a0c51ba1bc2741ffc405640182425252. 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/GBBPB0803394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f4272c46fec25920f61cfebc4f5b971b3e233a6fa07383b6a6f127b31ca2843. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:23:13Z), 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/GBBPB0803395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed2f21ff03420e0f0e3e784342978d1a76b6eb9c8d761047aa291bbdc925ea0b. 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/GBBPB0803396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a20845bc4acaaa0ff84233940596f678bbbe8880441bb9ff613de93e7285315. 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/GBBPB0804771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc81db647f0fcf5534b43b4fe1b24a979b667c4076f6a2d6278fb948655102e3c. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:00:49Z), 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/GBBPB0804772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e2fd347ddfa92c8d281dead3ea57a1b2b296279ac5cba086d10fdef3683db07. 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/GBBPB0804773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba99a3dd81fb5cce5abfe18d90a7cb9526506421b4f7d51276b14de41eb8f5c. 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/GBBPB0804774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b1c767110913f78007c94853dbb9138a56612344f511132aa1e39c3596dd965. 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/GBBPB0804775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c813d9a7f0897cdf13df82a8236158714706b7fbf8fa47a59f7336c8c9dfc27. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/GBBPB0804776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb2f7b9edcca015e1d6d77a22c8aa64bae3e1000837a70099f4ef9f1340aad8. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/GBBPB0804777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x767420f8f4d2bd05e8b119048bacad6de113310c746714030b52d99a86567a54. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GBBPB0804778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f60c8b6e12a777f63a33746812c3260e465039bf7b6bcfb02e199c3c019f30. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:25:36Z), 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/GBBPB0804779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb91a98bf3621ea09cde01ddf95dadf995e8565f993dc666b27a740029fd0a9bf. 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/GBBPB0804781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x380b52385d86a33309324683547b9cc2fdb226660a027023b062de2b3b6c5b1d. Chain 2 (Bitcoin): anchored in block 958752 (2026-07-19T18:49:40Z), 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/GBBPB1302749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa23fbf8baa13fac3ef6095bbec2abd9b55333459a141c5f6ea24cbb189116509. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:31:08Z), 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/GBBPB1302750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa091edf5501f284218407006eb8a6e18cde19c88d085cf5cd8d068f706518993. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/GBBPB1302751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa7c6af551715c5a445b22d549dde4691639c2a8dd683a61607746025567377e. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:57:14Z), 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/GBBPB1302753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fde62bca0750d702080e2060b516df23f717d9e2a625a5e09959ddf2835bafa. 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/GBBPB1302756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f24ddb074303b3c57ff0a01716a2a900b9f0c294683acb3503f3f21a1d93fc8. 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/GBBPB1302757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3284a7499e81b7f0db6773b22a3ba35fa6f87897e440e6619d51930023caac2f. 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/GBBPB1404767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d8de0d534d4f2340a062b9aa7182e46514ae5875a8d32739538ed7ad5fe39b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GBBPB1404768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c08ba9443ed8afa2d4abe033b20917d2e582732964b049bbbb1a10eb3b7c106. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/GBBPB1404769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb1be6568b50641678a7f877c0714b239d0853a777d501c58c0e36f67510a0d. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/USYFZ1783204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9215848f7c1bef14f76dfe1eb3a1ea1f3057271377ab98c6c958a950ccac7fc5. 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/USYFZ1783205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a8c445a3290e6d9aa64e0aeca6b3c1bfebdc4ec380b9988f0605435da842315. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:08:00Z), 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/USYFZ1783206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a8a4bf9ae986bb27d306df042ce86d6298a03b975d886f970a4b190f891d4f5. 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/USYFZ1783208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa238f58e55441776cae3ce521fc85155b59cdc0c72e9a0f0b830325a83e3a2a9. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USYFZ1783210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6efd2aa86fbbf9ced0f431003941e7a6e7720b630b14f4ad2e48c4a6c11afab1. 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/USYFZ2408102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ffcbb89829032cbcc6346980a1bc54ba6fb39e296c276bc551a0f696bd9bfea. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:21:44Z), 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/USYFZ2408105.