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 0xd6a82d95bb2adf1ca4951fd50e4679444f3697a0dbe7dd84c70b36981c97069a. 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/468e6e01-e2d9-436c-9533-5c98ad1f63ef.json and https://artists.proofprofile.net/proofs/artist/468e6e01-e2d9-436c-9533-5c98ad1f63ef.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 0xf5372ae36748161d064b780a64120f5b9b51f3bf7b36a06df76d503b018f5305. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:32:37Z), 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/TCAJF2506945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75726e69444d726424f2508bf183087d531bec0fe8cea64dddec28fd027027ee. 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/TCAJF2506956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc0ae7f09a61ce065ec0061bfc54ead45a3ebe4876ca5911d7d6c8f418f8b08d. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:05:53Z), 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/TCAJF2507004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a12e7da8e82798ee5c4335c0f3dff7a142369a18acaa6ffa387fa0628c7474. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:05:00Z), 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/TCAJF2507011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfa9b497811d58f63ba97a54d42e5a0a6e37a0d73e27d8424dd9c1507b78326d. 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/TCAJF2507018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5954343c06cfeba28b7d0a7e3f23f10106e057cfa0033589aae4e8793d27ab5f. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAJF2507024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3e53e58f140490e302bd91b8b7a3bc498ec6088650cdccb5f360731da3cc728. 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/TCAJF2507042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2270845345b8163a1bcf82311fd2c1e6bb540d7ee6def9e59d5e60a99e2f4bee. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:00:07Z), 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/TCAJF2507047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c05c83caa82aa00b6f0851ca6e74a02552b4eb51cf579183f55c4504be67ec8. 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/TCAJF2507052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76444b3a674885c884fbe609d5fb9a366173ce7cdfbd8fa41ad5863a9adec69c. 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/TCAJF2507058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd50270932bca989a597d9e75c128576f075557b05cfff09fa1176003302d843d. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:07:39Z), 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/TCAJF2507081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cbd7f781f66cfcf6c5f33e2055d5cadeaefdb026e6c2b639a8c0b4c91dac082. 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/TCAJF2507087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb195ec10984219df6246afc6c63a6bf04894292d8b4e4abd245793e5d74eee99. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAJF2507091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f9eeb7b60b63f06ad6ad136ac2127b0480a4f8f5582dfdcac01abb294a51da. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/TCAJI2529502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42709d06b3a515dd61119f9b7aa2b0bd7d8219adce607cc5169070552907b588. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAJH2529546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2650aa96bf0a1c7ee039611045aefe737a223b60955654bbbc3c926806ca12cd. 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/TCAJH2529586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e91190b2c1d2d3b6b315270ed45e30c66f77bbfa83f7fc1b64cd298cd062361. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:21:02Z), 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/TCAJH2529592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8264093b7c0cb28baf5a4cfdc3df02ce49bb58db9ce8f3cc1602c29f389d88c. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAJH2529599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf19272951df54443ffbf636b80046f76140440ffab7a694aaef42cbd3b820755. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:33:51Z), 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/TCAJH2529619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde3d20f05854b81354ada526e44d84756b8988465fedf1877b3c1671439cc26a. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:55:39Z), 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/TCAJH2529624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24eeb9f8013d72972d810005d2a4340e6d1e1992d6e6f661731ca2b31206cb51. 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/TCAJH2529631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ed7292603a4326b68c3d64becadbc4f560ca33bd6a2fbcd042360ba4c21866. 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/TCAJH2529637.