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 0x06f8244bdba6acb4f6c998450b54c268829a91f7c6c25a80c2513983e1d43527. 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/67c7da45-fa64-40b7-9836-22b598b72536.json and https://artists.proofprofile.net/proofs/artist/67c7da45-fa64-40b7-9836-22b598b72536.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 0x158a785d9645bbaefa07ccbbdf71eb88b06672d8b7103e2bb1cd83e6ceefd60f. 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/TCAEM1958321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde9f631748e31e260f4f2cbbb32b9f6068136d9864a2195994acf7bdbef4bd79. 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/TCAEM1958329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1942992db337b08c406da4335d517841d2e566e2cd098d3ee2f343f1b3c9457b. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:04:31Z), 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/TCAEM1958332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e2cc53f558f145974f4eed6110360107f3024c5c20a801d337ff5ff63425857. 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/TCAEM1958336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2431ecd65169a92b183fab0b7f8a64cd3f2dd42dd300ce8ff99061efa17424d3. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCAEM1958349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22683e5ebcc04925380456be3cb6b34099ba8682928901fdd2c13061e34d406f. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCAEM1958353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1fcb5a717f9e21c844101a18ce330f2139ac46e8a187f9077a3a234aa4db08a. 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/TCAEM1958361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x637f8e09f9b4d4dc20ebdd8b339731f67c7cea8a75090865dcbba77d97423bdb. 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/TCAEP1917041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06685f5f0ee6c845d1b5e244007369ae3ac16f756852f69829573282fb63c09a. 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/US9CY1000715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd7c38da086d3163ad17f45a7723dba6e8bd30442e2a07d8e776e2a72f1c7ee0. 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/US9CY1000717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc416b37b859abe3ccea5450e8f6bf2151d266d7d149f3ba442195fe683c087f4. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/TCAEN1997946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d838025533543febd6d9e5d22b6be66eaeeb0bf193bfb55bc6c99eb4fb8c0bb. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:25:41Z), 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/QMBZ92071865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba35832515a8e7c923f347f11d06fa5baa714f94fbde66d24efb98ed2675f26. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:29:53Z), 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/TCAGG2262070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26be7368a26c8b853b16c913a50b53dad904f3524f21849e4b1f158f8974799f. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/TCAGG2262103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x877b68289ee6ef5eceec6807e5560984faf76a9bef315c921c93318cc0eab934. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:24:54Z), 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/TCAGG2289740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1037f183dde69170dc91e1637e0a12a5f90fcbb9fa0a88fe87e2a02d7df56c5e. 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/TCAGG2289749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06325ebbff3baaffb7dc8c4be81ebd23ff160d115345f7dd10ad76b320478cd3. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/TCAGG2260594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc3a98b4ed7a69e21adab1ae469202a746aa94b1a54675b66fd5d806422fc173. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/TCAHO2320701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e8903a78c48ffb1e8621969ef4bc48aa0467b756c5dcc3a2063a0e3ae8e3cd0. 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/TCAJW2594319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a1442f3923bc977cc89024067fd0573b98957443d3d0d204d562c71b772a37. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ARSER2000011.