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 0x0887ed78c882314796e79bcf0bfb1f7e79a6c3c9c71bcf63ee496869d8cf7312. 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/afe1563a-f28f-40b1-920e-123f394876f0.json and https://artists.proofprofile.net/proofs/artist/afe1563a-f28f-40b1-920e-123f394876f0.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 0x31bddb11a22165baaa342b83b181a1b638adc44f822d66009c4bddc81395cc80. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T11:02:57Z), 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/FR96X2030091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf5c0ec57070286292739419f6e49d9e55dfd8dc5458d7813ee5d65f3eee220f. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/FRX282164036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6789beea6af68944b44177547d97c1da54fea31232ff1004d7f9a1adc64e7b4. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/FRX282164038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d7646e3b10fce1594a1e7786bcc7ca9a0678a422cf3f4db5699034e58921e2. 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/FRX282164041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b50ee2847f901fda84e42e862ed7998284cc4914e409dffeea7ea71f157dc6e. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:46:31Z), 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/FRX282164042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x898e7ecaaa648c2f05b9cc2bbca45ec68ca5a655726e87f28ff44d3ee0f44ff5. Chain 2 (Bitcoin): anchored in block 957868 (2026-07-13T14:56:55Z), 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/FRX282164043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc769ebbecf459972c20e6b961445fabc05d5de05a349bbc5b9dd426f7e767c. 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/FRX282164047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96fe0fab354b9816b3e4f39e698533883aec0d166e75a8f64ecba1213c38519. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/FRS182121506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x549afc61fb99c5b8d72917dc8b08a808f5df54ef789a0d08ce6e430c006095f3. 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/FRS182121509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe66efc3321f95dba00781f5d688cc83434c8a88990fce07ee426d290ed76544. 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/FRS182121510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa208d9f6678ce3782460a201bd9318ac6e9756f2117a25780080b7efa205686b. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/FRS182121511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce8dc3cdb61b64b5a2bd847071f535644cd0975d4332f1ef4089aa9645a77af. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:33:48Z), 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/FR96X2263596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf15c16c3801a31db267063d4be0788640c80790876236aaa2d8ed85750d49266. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/FRX202215078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da95e3ae43ec34d523b7c9d84d0e421cff52856d38776175b3208759aa5e834. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/FRX202215079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82de18db1026080d7336e7b8617421ba558b219a63504648dbbae6f9434ff57f. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:01:59Z), 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/FRX202215082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78d83faf1fe5ccae603123ee0ce4fa455487f82b19057034b8f857da07ac56f1. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/FRX202215083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a136b873c5151a4b2d1247920fbdae29c89089fc3f26822162e09637097dc0. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/FR96X2280036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcabd11b26ab726455c5c07919d951513c4e6f01cb9eebbb7b7290bff3eec261. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:06:21Z), 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/FRX202215084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf157326c9381c9de76798f3972de92225fec8b965198936ecc8f2a31e1a3446d. 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/FR2X42525839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2425d38c4b913acfdeed7d3954be5c86e722cad88de20a53a768e575ce632974. 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/GXD7V2569216.