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 0x7addff4ede99f323a84aeec34052cc47c09d608263247a261f3f2442465b6475. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e7bd8f93-bd19-4eff-ae50-268bbeb64a84.json and https://artists.proofprofile.net/proofs/artist/e7bd8f93-bd19-4eff-ae50-268bbeb64a84.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 0xfd6745af8881cecf294a9e1ae74827719e51251e03747045198b4f1837958bdc. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/GBMA22454315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf383a055fca4e323446cadd3d9e11bdfeb642236a4849c7cd2fb2f07548b331b. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GBMA22454316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a5cce17c5d42e979554c80511e56c275a7765fe13003bacbf707ae1ac400e52. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:08:32Z), 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/GBMA22454317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe2101bc6c1fac3221cb054113c1302498410deba020aab971920e916965ef3a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBMA22454318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ec581fbaa6a4f09cb6dc2ee9876683eefbe143f1dc73f2c73b4dae0b0227563. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GBMA22454319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa634d19fb9fa89307bef84e42c248c296f600b29b7edc46329e9267ca2943936. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/GBMA22454320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x279f7487352ad22efffa3ac8e04b48cad88f86d8e215d432cad069ef43cf2c78. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/GBMA22454321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfefba603dae1ae93376ff787625b2ab96458ff894bf801506e93ec8d949a39fb. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/GBMA22454322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d1ac004776550d325b209e34fd328a3e119186efb1a6c7403bea2fcb3f260c. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GBMA22454323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb183dcd9a625815dfba65b8877b55096e6c9f16e3b6c613ab7c319ccf27e6a01. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/GBMA22454324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x990d1b727489b1da665297f27ae4305a438bd6b378922cdcad15d2fcd5c50d7e. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/GBMA22454325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x371b5d9e4f49efb87dcc4dc71921a7679118574b73989628de1bff200f32c498. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBMA22454326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af452a0688cc0a483f5e3822fa1b1dc0f8655072fcde2fe084d9d57e4b0f40b. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/GBMA22454327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee0f83dd9c7670faf895d27b6abd54ad590f5dabcbf668bbcc4bdbcc0655ef8. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GBMA22454328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadcb4d5ac01fba748c483c58fa924aafe0f73615d412d65b351994bf52632575. 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/GBMA22454329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x047102b971f2c6015697612933f12005ddad1094c7af305533c148377651ae47. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/GBMA22454330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc6e2ccdaf1d0f0ca53bc1739684e6cf40dd97850fb8d93c4125eaadbd770676. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBMA22454331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54afef48f0d724f49c317a66fe66ad28eed7866234705f78a30caeace328e200. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-19T22:38:19Z), 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/GBMA22454332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa6e0e4e739682de6f5dc1e23dee99f4e15a2117a975d936491181542096f81f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBMA22454333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc72e42c59c189e71d4d747b1e211f44456f525ad19cb1efab2b712a8ff981b11. 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/GBMA22454334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x936245ec68b03cc7ba78c5bda91e6b00df739cec2790f6ec7e996fc688209f24. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-19T22:48:26Z), 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/GBMA22454335.