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 0x31ae80a42770db55914ccb9e41bd1fe401dc0fa4818c69dca7442b053c229e3e. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/30e94e45-6a11-4c68-9c6f-8a7bc7b6510b.json and https://artists.proofprofile.net/proofs/artist/30e94e45-6a11-4c68-9c6f-8a7bc7b6510b.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 0x6ff43e750b000b4a29423624fe9a03654a1c4462675067a2bfc46a0a202af3e2. 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/QZHZ31995644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb52bba372cfcd718b57d1615fc5ffd3f26e23ef9c15e1dbf9a5a8677fa447c62. 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/QZHZ31996517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb9213447736d62df5de93c30f40c57957b3087e3bd71a2e8434daf3f04e28a. 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/QZHZ31997220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb9213447736d62df5de93c30f40c57957b3087e3bd71a2e8434daf3f04e28a. 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/QZHZ31997220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79485b1962a59d35be6ef20a5e39935b585f2b2aa542d0a1533c9f22ac18e35b. 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/QZHZ31997868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x896377a20d60f7429a6718563e15c48bc2ddc1f438e130b6a39050168df1889b. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:35:02Z), 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/QZHZ31997875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b8cf63a187076f92d1e4e20bab55c9179abd54060d0c20f5413d079f6bd5f1f. 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/QZHZ31997857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x154317a40c95720d1fdf4d35706cd5024ebc63bf13325e9567ab868fb6fb64b5. 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/QZHZ31997861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9efc5ee8d3642054826ece929f96b8b8aefd12a3f012a534a8b9febf8ff3d6ae. 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/QZHZ31997862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e40316d4775c920e66048a1060c0107cfc20be448463deab3257305837d61b. 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/QZHZ31997865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79485b1962a59d35be6ef20a5e39935b585f2b2aa542d0a1533c9f22ac18e35b. 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/QZHZ31997868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x896377a20d60f7429a6718563e15c48bc2ddc1f438e130b6a39050168df1889b. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:05:24Z), 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/QZHZ31997875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a94aed6f61cdf206e8d7e7e4503b9cfcbe4b8904a58fef49cd1755b0769366. 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/QZHZ31998639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e1b51218320de87882ec9dab31556b86b961c86703e8fdac2aad0ca870068da. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QZHZ31998629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64cc03516b730b03add4182b92d1b7d4eba451fbd99593c30b2d9953795f66f8. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZHZ31998638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a94aed6f61cdf206e8d7e7e4503b9cfcbe4b8904a58fef49cd1755b0769366. 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/QZHZ31998639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86204d297f0603333c82dedef0651b0702717851a3bc7935fbad46adf79e9d91. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZNJW2118105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x627a78e7e46c586c0c6895e5cb091b4693130f2b8258bb777d6995a923371181. 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/QZNJW2118107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d9aff93b936620b72785bf84caeffb3976521557c1482c6060f562c88c3421c. 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/QZNJW2118109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf02f5fcf274d866c14009b5ab955c73f4933e1535aecfb38acf29971a537b6. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZNJW2118112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed6bd8ea51b7959e9643a55d089ef3a660da46ae02e5f833ebd0bd9bdb80930a. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZNJW2118113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a5275c4dad78efb861e484a14b9b893b238fc436e011d43666dcf7e3300134b. 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/QZNJW2118106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x627a78e7e46c586c0c6895e5cb091b4693130f2b8258bb777d6995a923371181. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/QZNJW2118107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2203f221f643b168631d8fa26c5982c8806772735af504fb274b0a72172e901e. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:03:54Z), 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/QZNJW2118110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf02f5fcf274d866c14009b5ab955c73f4933e1535aecfb38acf29971a537b6. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/QZNJW2118112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed6bd8ea51b7959e9643a55d089ef3a660da46ae02e5f833ebd0bd9bdb80930a. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/QZNJW2118113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaa42549fcf55adb086b3c26d32f209af7974090f0fd6910b491b09bdc807754. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:37:44Z), 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/QZNJW2118114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2d75d5f3d045f255089db3ae9c3b962fd54a625a04d5086712dd8addf9402ad. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:40:25Z), 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/QZNJW2118115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23cfc90b9c2ab05f76fe4b5671ba5c94875479105c457cdd93a3ecbdd022f2ef. 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/BC3Y22200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ec99a3c2e6d796bec85619500d5352f1a3d91c53e48cef970780c6d20639732. 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/BC3Y22200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12834553018bb25735064f4c2b4693fce350a95b88b7383cbd76da652d065deb. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/BC3Y22200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d3532812bd4575996ac765f55ecfd6993b89af59e6ebf394c52b14a29f695c. 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/BKNOK2400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad57154c1770e88278bc9aa4d392c103266a7acc28e6b9490cdf447dbc120d15. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:21:10Z), 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/BKNOK2500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b36baad4bd0459e4d9d701b4ffb5b9d9120f079d9eab37c7e0968ea41b7632. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/BKNOK2500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd2928cbd202cdc2c385163cec940314c38fd261746693dd6376d9003b0a63f0. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:46:42Z), 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/BXV562500137.