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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35eb12f57abd3f10ea9eb14c977acde98d39e117f6af198c1f6e5cd3ee6c790a. 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/84100e7d-968b-4159-9947-f422760849d8.json and https://artists.proofprofile.net/proofs/artist/84100e7d-968b-4159-9947-f422760849d8.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1291e8800e8e36e963b2d9e86262f9b08f13392e0e19c5b1df32fbb87fc010cd. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/GB52E1636901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e7e13dd8ffbccd83a51db7cfed9b91e199e47867d2ba4ed6a46828c10a0ae42. 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/GB52E1636902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24fbd1c50fcb96589190fdd68e4930d7fb77c210c3a6d168a7fcbfabc9ab4842. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/GB52E1636903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf221bb9296f624daf6f99684555cc1be275529f875690772eea5772e3c9bd656. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/GB52E1636906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12f6170760d700196bfa5c473397358b262a599eb2ed6eb4c632dc6c8aeeee07. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/GB52E1636907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6735071a389286fdb849e0cca9ac4795904af676d88330adf7bb7365b1b4a4f9. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/GB52E1636909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x254810abbce9e12a106733ac5ceedee2668f6eb978c5e910034869cefe7a6a98. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GB52E1636910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa6fa1ce19c993274566dc0e58f4939bc887cb7a26bba1a7811bea3e63f5661a. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/GB52E1777902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e4c15eb4e50b7c136a11a9229597298efdf883840598ca1b2a1dc1628c21f9. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/GB52E1777910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c233ebefff1b6a4a7788327cf2a5bf65eea042b6080236afe792c0062534823. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/GB52E1801301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb730fda6f5bd888d5a90c08beca0f02ead3a810d9f565f5d5fe413eec0636a2. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/GB52E1801303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae2ba5c3df43bf06628830eba3b59ca78454c71efc46d6bb7134335b7b8eadb. 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/GB52E1801304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b2cc056d920cd7d72c57fd0534fe947835ef1ae99132f4766c41c69d46a267f. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/GB52E1801306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x189aca335d92ecb8f03f41ec54a51d896d8bbb8fd383be3b6537492fbe6a7b01. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/GB52E1801308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaddee00780cc7f80f35ac5519fe0988587170ed425874b835d3e734f26f3f1e3. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/GB52E1801310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3230b6380e1175d9f7f059f760b6c94402b39d9024ddc6d3c76927b64cf18d1. 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/TCADZ1805911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2349439d24741c0f8f78dcebb1e007e797a2c7c7cb1079bffd73279bbd5b7a2. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/TCADZ1805914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x823369334668a4b6acbfd16767a0231495979e50afbe777e61823abc8c105d0b. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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/TCADZ1805917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3bf4bdec4ac47c3e67b8333af927575224212a306cab54994a4c64b58a25001. 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/TCADZ1805923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe143a5afd0bfdcc1f8f9a9d6b68b9565e09471918c00aca72224d8d43faacd3c. 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/TCADZ1805929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda7d122d70134838378b670401439bf2c91dc3bd726745ed12b87fd92f7642b3. 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/TCAEH1960780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1e118c95c7b8a4cd6b6901e2720eea1f3d88cd0bc11c007cd8d45f490531817. 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/TCAEM1994978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6ca75cef4f63326e51d25d3e91acf2c0627c00cd0125d83b9987912d073b49d. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/TCAEM1995038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc78945140650825cf0b2e00d0e442da4a7e27fd434e61df6cabbd604377ceb. 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/TCAEM1995085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9450d2ce85bf418ea97053296e85bb359f960469f4d250efbe83a7c8ddb29e83. 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/TCAEM1995065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d18061711b0d8df824ef1e06973d462a2a43bf8a71f387cb8fe2c78285f15ed. 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/TCAEM1995070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7444e37b0d6d89bdd45da1a7407b7d9d77f5f5377f3dd20ac90bcaf7b689d47d. 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/TCAEM1995074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf98325e2432b416485c28c9e66b50c1b7cdf81403f09b2c1da8cd20fbd6239. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/TCAEU2050293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6907e90c6eae9203a55c1c3d8e867805e94339695c07e6f73ae26467df3af460. 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/TCAFE2013247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7edec2f8b97bf918c70cdb5f65542f531b499bb9daa0324cff733d6fa9f46e0f. 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/TCAFE2013250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x742a267f6be26313a5f9a014b8bb63dee4b24ebd41ebd980d704f3cf72c5a7eb. 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/TCAFE2013253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19d80fd8bcee63066080d92b83a434888a87c9995384746c793f48bffbe69e28. 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/TCAFE2013263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb962cb46faddf1130ed667da52af4d27c31c2affd3c617766161fea82358ea. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/TCAFE2013268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a9224719cb418199604b64996ade03be603cae9ecd5439e55cc92df97f31e01. 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/TCAFE2013271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3597bd156926d90014c6c6f811c13c4134b1968d114ef637af17efaff1606fdc. 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/TCAGB2213853.
When Mama Sang the Angels Stopped to Listen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f5d4cf720baf84f3f70ce9aaf2ac54319c32e6bebed51803df99386b88386df. Chain 2 (Bitcoin): anchored in block 957647 (2026-07-12T03:57:41Z), 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/TCAGP2223598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x593a5b493f7fe0cb8d19c9c387637cd6cc1d915ed6f44fa5f6575d61ad0d8bee. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/TCAGP2223608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbefd74dc6d9e607009249fa90a2b15c77abdd63417da52a326925b04f4a4cd4d. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/TCAGP2223616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd4e392649198666bb584769b819a991366501a650159d0593dc1f86380da2ac. 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/GB52E2340701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd5ebf4e963c7ec01d8a5035f6f484dc0ea8d38ce0cfd2c91824b3f0be4329b4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCAFA2002387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd96e9309b1b9899becbe452dc2e7ae245cf4fdc79d3f3fb689f36c8f9e3794. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAFA2002517.