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 0x148532f668ce91ad931107e68d8cb2db6db055aec3e1bca84b8049be7b90f0a6. 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/66a4e0ff-698b-4bf3-a576-68c64ffee803.json and https://artists.proofprofile.net/proofs/artist/66a4e0ff-698b-4bf3-a576-68c64ffee803.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 0xe1219a8a3e3e7c92da121693b3b4301f223c7eaa0184e85ed34a640810ccf324. 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/BGA671117233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa190b7eec2ab7ef7601ab6ca343a5f0e473eb6e8726a90ae5acd2d69e806bc64. 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/BGA671117234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe60d098597396c73bddf6d654cc97d33246f83438d6dcc7689fffbe0aad8e2e0. 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/BGA671117220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc6370f648dc692f5a5d9b127486092e6ac55ebec57b3d50804224e11f985db5. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:03:02Z), 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/BGA671117227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a26566946d7c8092953b6096beadc610566c144c9e92498172fec8a48e54bad. 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/BGA671117218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67fc367ea925d555ddc646e22346e383858ada6c90f4061a9b9e205d4d7f1e47. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/BGA261301887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a19ec03987412d2f7622145f3eb0e0c214177144e2d8e31e17c24003e767940. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/RSA221810472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb27c5cb97ac218a457c1c4bb7fd83d74f1df9aa64235e71660ea7bae67174fe4. 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/RSA221810473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b3ed2239d9bf1c69210d5f02c081eb3b0b9ac5fbe8f3f0541283d35b466fbf9. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:56:04Z), 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/RSA221810476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x943a379817fa75bb24bd9524417d9bdfb0884568603eb9b2cc91f22f6d1bfd27. 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/RSA221811573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85232d594593b362113d1a8b7e5d9350c77078e7c7d476b81542269f46a45876. 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/RSA221811578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e27e66ec70c8327ae5d5c2e1495d0b83e5cf01a581a3454982170f6737bdf39. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:32:01Z), 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/RSA221813335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf70d75d1c98eb32bbe465c1450a0f51f5ab385f172289cf0fd1545ec8f5a402. 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/RSA221813338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49bec4248f5594bf4703c841a4367296afec6b09365ccd2d060dd913a47f5fcd. 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/RSA221813341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c965c4818a56d1238a22659da07cc9858e9939a17e81d3100e67836ff9a8b5. 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/RSA222300224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89bddf0e7991ea4474ecb62d1e19cfa7a04192529ad769a545566c9fe7c569ca. 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/RSA141333699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c0e0ff6f0345d46f1de1850f9b3905d7e459423ab23db2a2fb353eaa7404e4. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/DEKB72441418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x177f7fe560e01855a41e9225a51f58bd7242f7f010d181050783c8f4c61e5b0d. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/DEKB72441420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x700de4eeca598f1ab8c3da1dd20f8189f6bea1e1644ed38965341bee8939e9a0. 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/DEKB72441423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf25e4b15f3471c2f520cc260d0e23612b630b0a9dbd90d049a4b91769928163. 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/DEKB72438381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa438890dc7fb735065344fe0267e2578b9d6707dd7c644d18119eaee33353779. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/DEKB72438822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x850dc60018e775f7ba1485a37a2d69670f1fba6bd633c22d4183bcdb48f6b981. 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/DEKB72438823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37da033b2a103da77f120bf16912888b1d891ec33bbf806b59fa704f1b64e169. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/DEKB72438825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde0cce62a78b106fd5183c869cb4cc159c865bfa2cb8441abeb2fe8c33aba789. 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/DEKB72438826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aff383338fb23eec811503b26f95f96aed5c00bfe600d440e6aa021ea99a6b8. 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/DEKB72438829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d48f872a14d2fc6f5fd5a6db238896456e4fa5ad08c6f0385c865e7e0bc84df. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/DEKB72438714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3409ed752b57e420ab02ccb07e41242051fd410c669f4da45d8400be0119d07. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/DEKB72440311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2becf70bfddf1635773b603280fc56d288628642a29340938767b0e8eecd544. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DEKB72440313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f5ef6e1ad4ef88df3cc6c88116366981dfab01dc1a69f016981ddea0fc9284c. 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/DEKB72514005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9567ed6636376c32b5fce55cddb4186ff494598aaf36209fd1e2df14a46465f8. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:22:59Z), 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/DEKB72514330.