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 0xc2cd0ea15afe04ebd378dc48b53399da7909f93f59f2dd565e16f3c0e04d945f. 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/61e5f603-7c16-4343-a082-467449884e3a.json and https://artists.proofprofile.net/proofs/artist/61e5f603-7c16-4343-a082-467449884e3a.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 0x889970d5ca78056fdca70a0fdc5ca76d93b4b75ad0b61e92a5cc9fd0ce388316. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBLLT1610687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24113e0773f07aec293049fd861c3746cfca4ea63ef6c19b0220fee7acb74e04. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBLLT1610686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc08ac803971fb7892f537856e29025aa5553f8ad175454d22591613364940116. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBLLT1610681.
Background Music for Brazilian Restaurants
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc33e3e9bcc61a8d33fac468efb9763f064f366dcc1b186bbc780d0ef9a12ab9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBLLT1610676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6f39cddee316b1ffda599e3b0e30b3dc95a8615dff7059d8fcde3d908f3849. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBLLT1610672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86de0dd6bfda7162570a2661c8d1e3389dad6acbff3040cde2d19bb873a320c0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBLLT1610671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x551e37f34d7ec8d74bfe91d976a9d84cfec2fc512a32b836a1d3211e9828dd61. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/GBLLT1610684.
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 0x05c0e9ebee11f75989d8c510f27151e586c64efe8cfd4e5c9ec0fe9540f7a2f9. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/GBLLT1610683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f8a28c2b5fbb061069c50182518a1444b21514c6404b57606648732e52ed1fc. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/GBLLT1610682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cfc10b91958ca43da1431e1f94d70c881ed0070e4b824a82a340c4d92452576. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/GBLLT1610680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc65f45ef3c31b2fac7c067a8dc97756307b3ffbfed9fc860a1ec6e326713ede4. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/GBLLT1610679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58baadfad912774915a7f0c2d63f40227043681e7346aa56260eaf5feab50032. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/GBLLT1610678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3463b40a615102a3f8db13024fd0d9b075e724ca46c42eeb653b15ad11ac7fae. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/GBLLT1610675.
Easy Listening Music for Brazilian Restaurants
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f20b9fe5561e96a264443317d177ea20ba41a84953993cc0af9f062305c2ca4. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/GBLLT1610674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f8eb5117a52d66f517acc154fa5e5b7c5d2d257a02de1b5815dafe499ef4ce. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/GBLLT1610673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d387ddb1c8f891db538dd91047bc4516582050a434bcb55a029003247d1812. 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/GBLLT1610244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacac79aea63cd96fba25eb1715416cc93765c98f23b484f6425c2b705eb36193. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBLLT1610245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d2f5e33752290a3ed95838e8c10f49231fa21c3a3d0757863467aed2967da32. 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/GBLLT1610230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d984a7b234854e90043e9e58d82970d0755d56cc51beb41a1153f4b5bc9907. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBLLT1610228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad5c6314742a54f0f6caa70cb330a4a63238a8dc355c2a84feb20f35db6f555. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBLLT1610227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bfc0b8a89d60cbc11c584165102d213bf3fb07401f3fb756f8c8b44ff30b1ec. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBLLT1610226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7787234a3b9392126745110eafafe4cb0229448903d747f33a2ac5da0cd9cfdb. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/GBLLT1610242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54128b107958d093c379da990927ebafdb2acaece21c98827c871055c3f91c33. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/GBLLT1610232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb173554651d25ddd3bfc09954578cf70a6d941c38ee3058f007f0c736209815. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBLLT1610224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22002fed05f1737c4ee46cf0a93e92baab1ad901a5c3d5699e9516db5c296c17. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBLLT1610222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0614e1ecba9e638c53e5fffb77c083fb7be9e125514155dbbae29c7e1f114fcf. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBLLT1610210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe099e9bf93ecccf0895a9dad8c435aa967b42644e0839c10a599a3a01fdbb032. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBLLT1610208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ddc8d31e1901b4cf98480cf18bd8661dd6c3b9d89b1962f2528ee6a0f969cac. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/GBLLT1610223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc70fed131fd928bb5794286c2cfab1e1691c3141e46f00b9dd82b497d03d974e. Chain 2 (Bitcoin): anchored in block 960330 (2026-07-31T00:58:21Z), 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/GBLLT1610213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3600bb69583593bfb44d788fd7bf9b698062e5ff66e3ba6fae169afb66be0dbc. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/GBLLT1610206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf54dc1c473547034e8750134fe130202b4c892b9761a6fb41a41a8b50c376c4e. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBMA22496588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf1ee9ab3170a97193f0a70f5fff1b59eca85224997f718f3ebe60a5ac025b3. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GX3Q92468689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x968699e452c708107344f5b9c3738f819a918c74eadca658bc7d6ee65ae299ba. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBLFP2437973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80540aa9805342ff20c8e46b7900985ac8df311765059ddf084fa649cd7121ec. 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/GBLFP2433651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdde526a2de93e73166d0a29cf6ac2ba0b0446a8f423a39fe0a7614105eed7c5f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ARQIW2501196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c4d9232e4354a7f0061a7a162a5db57a64145e18d0e7bfba1d11a9d391951eb. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ARQIW2501197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d482a564f00b43650ca91a85fd424cf9860aeccc4cc6f9cc121d7662e169a2c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ARQIW2501199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96eb01a26a69e4af258fe0a01e9fcac4bca33fd6fe09dc2eec5aa6380e3099f9. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/ARQIW2501195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39fa25d559c8b5d2452a7c08284fa5f017f19f92cc9e6f38e254023f518dfbbb. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ARQIW2417854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae7d2594f902489df53285cb3d5c07e4e72439fb212cd8948d03821288b6cb49. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/ARQIW2417856.