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 0x1ec8dc212a3ee98986842f70049e71e973d2a7838843b42bc387652de32c9d77. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cdf6c79e-1c7d-4ffa-a49f-860480a9e70f.json and https://artists.proofprofile.net/proofs/artist/cdf6c79e-1c7d-4ffa-a49f-860480a9e70f.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 0x9661187de576fd5bde90aeeb5b0fd33db1a2d7f0ec793817a1304b11dbf48b8f. 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/CA5KR1822381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec0c9fdcb793fe7bff008ab87495d6c35fbae0c50c7505163d63f9fb2a9d9533. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/NLCK41035581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5333926b66b6fbf1b89e559186f6eedef9dc7a5143efb3394be662320816a7d3. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/NLCK41035582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ad19e5b3f2ead7633d623dbb74763c20a127c1ba26e7d250c048dd246c4440. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/DEHE41600064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f373c85112d3c8132a9025d04eafa925bc7cf5f330cc999f0f310779882ae3. 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/DEHE41600070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5caa9c7ebae39818442a2a1ded7b238573932b69c9d792f623e0cd8959729f2b. 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/DEHE41600073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed0e4efb5b8d3ffe5c0a2a745f4495e49f27797f0cdd88262b0c9ca9ec79e522. 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/DEZN82369184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ecf6039115f8394c98a2035ae6676f1002e0939cea6e4c6904b57fcaccd5971. 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/DEZN82369185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab3ef0d29535436da00a05b95593f330d15e6e96b90f96038fb33981820d388f. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/CA5KR2022286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x870b18e3bd7126b4cbe85aadca41d3f5a6a625afbf514866452cbf45ba186e03. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/CA5KR2022289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x169c9fa9d025dcc686d872e8b9d00f22caca0b2783d617a7be710ba9992d2645. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/CA5KR2022290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b7d90179291f5653f08f636785ce2cf91ad870d3ed280d8afe578955bc97bf0. 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/CA5KR2022291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a2a7ef85de8a6d52095560ab450b43144e3cef3c321f630c26890d96f3a46a. 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/CA5KR2022297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb1e7abbfb29e3f5b42dc0968ad3097e5a24516c2acc6b7993d32b6c5fa027ac. 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/NLF711708710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb2415c78e01cfd4956924346fa127079e2467edecc864bc85af5b87a2239ef. 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/NLF711708699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb4510615e8df19ba86de9ac43067d06c3941bbb03322dd597d3fce3bfbeded. 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/NLF711708700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea4d5ee8bc9d244427223f04344969931609a3574e01d5cbb9913bc683818fc4. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/NLF711708701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca81c499fd42652c8f9334179d633498f886e33ccfc759aa2b2bab2f45449ba. 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/NLF711708712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x457bf3fc89b4954c8d8c749ae5431e536381262b02a9c247d84dd5fff9179ae6. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/NLF711708702.
What I Do (Y6 001) - Burnski Tulum Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42fbf29cd1de3c6f158c44d7bfa9f684082cf79176a57da5ce5598207f97dfe8. 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/NLF711708704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd76da86c718244f76b00c6465ebb76eb3843284fb0b5ab2d1d3ac7d66970b526. 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/NLF711711935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb01c0dbfcd308b720a04d57aced7ffecfd8c3dba48bf1976c92a9cc9a5316c00. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/NLF711711936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88418385b7a344c35a912ae5d4c24239e397eaf0ce9362cc49e88ff2f9935697. 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/NLF711711937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41ae34d301200d1b630300038056ae528ef0b9c58715f1b26ab78d116947ab6e. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/NLF711711938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ca531df1b74411fe57cbe20752c9c44cda2d5048117d7fd2f26a5914b932c1b. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/NLF711711939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f35981da07141f465a7fb461f6ca7e5400c76cbf98bfe21023917306f62527. 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/NLF711711940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54d2cb30330b201be5acc87f176ca1a5b6037a9f21f94c73c46da71b588c3b30. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/NLF711711941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3a0875cba10c273370b990127d2915b075b95abab99e0784d428db5a1529120. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/FR6V80359806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca846102b11ce70d7d3747a91816dbc1c506911647a800f6bd60537a049a380. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/CA5KR1040073.
Retrospective (The Final Journey) 2015 - 2017
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e2edf7e454de2329fbf662ea18cb5747d2086c039533b61f19d1be6cc61d63d. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/CA5KR1046357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed0e4efb5b8d3ffe5c0a2a745f4495e49f27797f0cdd88262b0c9ca9ec79e522. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/DEZN82369184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ecf6039115f8394c98a2035ae6676f1002e0939cea6e4c6904b57fcaccd5971. 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/DEZN82369185.