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 0xb40bf32de182ccd1a27acdb9e3afc6ceee9ca900b312df3abce609715dc34d46. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4f1c7b37-4742-4bbc-9b5b-7887f6eb9dc5.json and https://artists.proofprofile.net/proofs/artist/4f1c7b37-4742-4bbc-9b5b-7887f6eb9dc5.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 0x79f71fac9d552cb88082d39b9be630966c81623711f469f445f14e651a7b8d65. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:34:10Z), 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/SEYOK2307141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc96872f3417f12cd540963c31b83d426908023ed628aaef52e130f46d39a78cb. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SEYOK2307142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d0c024a72cd0e57400c51a526be1ca13a7575246439dd1b4cb88c25b8bcac91. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/SEYOK2307144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db357d721db98418783450f48a146c4a191b52bd0fcd616006913d08baa6985. 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/SEYOK2307146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1307d2f476d43cbd3a2459a06dcc4b99fc3adecaad31d3c9455b5751ece45286. 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/SEYOK2307148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc755a48a926688bea23f8ede163807d74e32236d926243cb595c48cd60fcc4b2. 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/SEYOK2307149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5afd47ed51805a78ea44249ff9fda306246d07ffdd63422ffb4a025f02d05df3. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/SEYOK2307152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e0ef3130e37aaf96af93f69cfcf3b1eec8be8f6f4c85657c0f4bcd8e56b46f1. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SEYOK2307153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3af037f349e4be57c74fdd08447425066fee5a5e0392863e5c1851b8c8012c1. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:46:37Z), 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/SEYOK2307156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c6ec633227257fd4a3c4cfd8ca8a8cd0c3488a934e9a1e1f47bde3fa075986d. 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/SEYOK2307666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x499ffbe07615e967a504aef47be1eebd8de6a10ffb57a6c8238bf81184b94d9c. 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/SEYOK2307667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e835757eccd0db8d7f659381aa4c00f7b43e7236c071c4f38de5dc2a0c02f44. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/SEYOK2307669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7103b8b793dd5ec0e2cb8cba24bc44b0c0de882a249f432dff907600359c8329. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SEYOK2307671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40e3a96e26df4ba839edd87ae67aea07b659cacd617c9c698b6699b331004858. 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/SEYOK2307672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x064ffef61181dff30c5fc006ba4de3156525602f62ce9b9536f5112a49cf453f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SEYOK2307674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96fe8afcc246abc529557dce7503f60db67ad8bb6eebf3c19841977127b54fc3. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-20T21:56:14Z), 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/SEYOK2307679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ca983d28b0a8a0df87466f2fdfb2174e79d0648f620ae6c09c8214d1915255e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SEYOK2307680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd26fb92865fab52a71fad3ce372259b4f6a1a99fa8fcea5bfd6dfdaabe95206. 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/SEYOK2307681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2e2e9ef300f322b7a2785dab233e3090e43f6344b4c3d580e394acc2f890a1. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:02:32Z), 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/SEYOK2307682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8e887ffc77edc878d753fa6cacc9903d23e6c245c3091cc508812b4811f5625. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SEYOK2307683.