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 0x82b9e180a3f2642cbe2f24877178c9778ab0223faa60fe04ce53191d0fc95926. 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/e98bb88b-51b0-49bc-b176-ae6aad792e24.json and https://artists.proofprofile.net/proofs/artist/e98bb88b-51b0-49bc-b176-ae6aad792e24.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 0xb515d93f8ae28e85b085f245ddc409a040c569fcc0ca64aa5a92ec95c1f82717. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:48:31Z), 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/QZNWQ2009297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ac27b6512356555313f42ed804b83cf880f03726dc2464be859d85fa1209dc. 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/QZNWQ2009298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5b696a349cc72926e35d27c9717591b9fed0e76593b58cfd31eb7ac28a0a252. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:04:50Z), 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/QZNWQ2009300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa661b8cdf1404965e11854c52a293d65483a17045a7b7b5ead32e0deff7e9c30. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:16:08Z), 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/QZNWQ2009302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cec22c29a15f5053f3f1ad6e1fe8fc59e471332583af2c06671d2c84f1d6b62. 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/QZNWQ2009303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3966b5910bf700dd3e9e0233927f8a870db19a3258fc6bf74fb9fa085922859. 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/QZFYY2065667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe725dbb0ad5fb8681a28709bb23c465848ea34786c4748ae9accbfa2f70d8ce8. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:58:07Z), 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/QZFYY2065668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc3945973797ee4f495eb23d3834de8a1b0a4696069ad4acfb40b5a884ff97e. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZFYY2065669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17dfa849f48d7f2101ef8219b8aa8b25f357e2fd580b664f237dcf5eb4bbe547. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZES52081197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17dfa849f48d7f2101ef8219b8aa8b25f357e2fd580b664f237dcf5eb4bbe547. 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/QZES52081197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b7900fe9f6072b408ea15786dca55285884ff5c6a51e1dae68912fc53b3a57e. 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/QZHN92041208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4883ac50069b362130752e534e31cd3cff987cbb1b904bbc25213e801f22f0. 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/QZNWQ2009294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x378b251ab30aedaba4e43242aa1870341b99c09b4063f9449db90b302b53f47d. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/QZFZ72190317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x378b251ab30aedaba4e43242aa1870341b99c09b4063f9449db90b302b53f47d. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:57:49Z), 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/QZFZ72190317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x968b57a93b684e0ba4200b95cb0d39f3962316a186858efefdec6c28cb27671c. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZHNB2180192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x968b57a93b684e0ba4200b95cb0d39f3962316a186858efefdec6c28cb27671c. 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/QZHNB2180192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a26b5e2fba3b5d5657984eaa6a31002ae2f492869beb5c7dd653feadd68035. 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/QZK6G2249381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a26b5e2fba3b5d5657984eaa6a31002ae2f492869beb5c7dd653feadd68035. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:13:52Z), 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/QZK6G2249381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a26b5e2fba3b5d5657984eaa6a31002ae2f492869beb5c7dd653feadd68035. 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/QZK6G2249381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2771a37ab731e538e4999f1c4211baa795711b9695ffd33cc2ca26b271d324f. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T23:09:31Z), 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/QZTAS2227895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0362dcd59228ea8c3655339023db5a4aeeb243f968862cb2635c68c22ca9135d. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:37:00Z), 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/QZTAS2227896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x152e1a44e48eae648edf3ed4f2a1e5dfd26e78e1022f183b5f14c504633f067a. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:07:51Z), 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/QZTAS2227897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c67a4b379b71ab231a0c4d8c370386c72f1e4ffbd9a97cfe70f7162a475f6db. 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/QZTAS2227898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x249d1e774eb4cf37b44065e7c2dabfaafa8808e9bbd8f7b8e6b5dcd9c5e4b194. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZTAS2227899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0114ada3f8939832388ac8bf8220a01d691cad233db2d8141d4b29c237cee8d7. 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/QZTAS2227901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6072e665ed4fbe50ce79c0c8e646235db27e7c0e96295300afad8cb8cab11091. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZNJV2382986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64166ac927becd1ef30043c48d0ba9e4d7a7b87131fbbc47dcea343550f880cf. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZNJY2331299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc064809e09d969cd4e361e8d8922d5a38f89757523266c020fd4a1ba9c9e16c. 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/QZNJV2425441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d8585602343cae940deaf774969753caa631459971c806fb89be10028a37897. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/QZNJX2403310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb681ff03ac43f91a790a78781e9967ccb404eee1c6a89d1bf44156cc763122. 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/QZTVM2419087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc064809e09d969cd4e361e8d8922d5a38f89757523266c020fd4a1ba9c9e16c. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZNJV2425441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3689de8261b4171b5fdd07eca9f78d56af09d55c13cb4016833cf26a63213cef. 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/QZW9K2455326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78185abff446df970dffdb8fc143949ccee095f8edfaaebd817241943adfcbd5. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/QZW9K2455328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf20d0c72d5d54f9778c5285067648fabb21a5481bb2d11fb7fe6bc50fe713006. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZW9K2455329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc064809e09d969cd4e361e8d8922d5a38f89757523266c020fd4a1ba9c9e16c. 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/QZNJV2425441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3689de8261b4171b5fdd07eca9f78d56af09d55c13cb4016833cf26a63213cef. 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/QZW9K2455326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63c4d8b08595bdd44e400c2acd70935ebbcf878a288be2a3f0f4c291f2fd1d7f. 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/QZW9K2455327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf20d0c72d5d54f9778c5285067648fabb21a5481bb2d11fb7fe6bc50fe713006. 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/QZW9K2455329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc266bb61434f51fc35ec5424255c3ba4faeee4e6935c64734322d90ce2639c. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/QZTAU2529767.