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 0x4246bd8a6e31744d4d191e0c123927dbbe59f650ae141449a7a8d2f1f2d111f1. 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/ad45f460-26ca-42cc-b5f6-d5de0617c808.json and https://artists.proofprofile.net/proofs/artist/ad45f460-26ca-42cc-b5f6-d5de0617c808.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 0xf524d1eec4df754983776365bc2aae6b3b5eba5d6d19821170c4a2f1713b19df. 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/QZW9M2314401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd2816dd19763f0aa5a47e4e82781bfa16d58a72a59bc55d497ccb828a3042f5. 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/QZW9M2314402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a8c97471a9e5a27b1a1461ece629493013e57100771018df530a417b2a91e82. 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/QZW9M2314405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18185f12820da495ae135cb36d56bd08255a3f0cda0a6c45594df182ce3e73e7. 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/QZW9M2314406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa04f0d216d96301363117a754703b467c0d606ec693652bcc3a88b5adf56bb7e. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZW9M2314403.
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 0x46d980592cfb5406c378a21c89106ddc21c8d317f129d466eb0945a4cb8bae46. 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/QZTB82256895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe4c55fb3e6daeb974cf76d063ba53ecd89ef4ba2b657fb5355a43abf2813648. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZTB82256896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb36527ffc8153b779e2bffb143409d104b67499e360becfb6e3f339499ff0c50. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZNJX2483896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe8b283ae447ebd9cb00a2f13c656669165551565dc12bde7eef3ec016e379b. 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/QZNJX2483897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de6d262b358b181b55e88df78e8861d2fade917ad6cf6c25f50dd7f453aaa7f. 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/QZNJX2483900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe332b947bbeca68a16461750ce1cb15d0f03d61ef728f1fab730015d4d7b85cc. 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/QZNJX2483895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc79015bec4564ef72f14c9cd547ac1793bf118cc0ffec31d2a4fce2803ac328. 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/QZTAU2307990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca8ccce193e843d051af0df26af757dd00db91116c39a11c86cdfe5152031de. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/QZTAU2307988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdadc3d783c85cda5e7947993083449c33f78de974849ea789c249f61a562ae65. 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/QZTAU2307989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc25e30e880b46aba7a72cc71f906e34a38ae420dd266b29970c14848bd19103. 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/USUYG1390062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4859f67ca7cd5f55cfd1aad5fe5fe6381c95a848de44e97bdb98fc55afa734eb. 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/USUYG1390063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ca35debab1e3b6490d4e9d1e00e0c67e129c2523c65d67fb78d287db0ac6dba. 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/USUYG1390064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf94319cbde8983fc79ea66111900d6052496c1517c7d4e559dd4a71cba324f27. 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/USUYG1390065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dd032f4bc48cf8103e10c400fa63420f9fc8567f027eeff8ef391b95487193f. 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/USUYG1390066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1ff65f9058aeb1ac7eb41623cf97a81a9ea637e32910a6b7a63300e598bbf9e. 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/USUYG1390067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x773575709e382abe8913623962bbe20a98660fbf0da5e75b4ab4c994c63c5482. 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/USUYG1390068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44b6cfed20629ac5735b849628ea254055d4e3bd49d0ad284db8cdfcd046135f. 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/USUYG1390069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf74e7bae00962e3bbfe1874f7aa531a0d0d34217c208df4e7b9cf5028c4c722d. 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/USUYG1390070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf024e36fe923711d39b0f25976aae2b91c815d7a33e6c42589b11618ee21e79b. 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/USUYG1390071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a705667a459267c6f5d567b4dc7fb7d50bf85a1cbbaf2c36d08ac774f79af4. 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/USUYG1390072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad787073ba20c120fe76fd6521a4d8f5dbf7ae9efd4e71de126f0a68ade6d0a. 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/QZFZ41980000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf49347f98e1a2b19974c98d72969ca23531ae2bd9c036cfda303f75a7a7d07e0. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZFZ41980001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa299790fdf10c3977018e404d298dd66a5bab501c39d3ef736488c6997df2539. 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/QZFZ41980003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43a9db214f12522a64e2c71d9058efa29caa1da3603bab3a575b88d3d0642708. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/QZFZ41980004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x957fa639036b7379d57615aa92ea2ebb31b7abb035bfe424c0463c92e989fbc0. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QZFZ41980005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e17cdb964154ff91cf72ec309dc04515cc0ab2ef982d2154be093e7d9732e0b. 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/QZFZ41980006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc07ee4bb23b173570ce5dacbc28373acb0d82f17a0b1eec008be17177a70150. 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/QZMEM2266003.
SunShades & Lemonade Vol 1. (LoFi Instrumental EP)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4597643a0e63c2ead01e3f1a42209b85b44fd83151424b5976b6352dbe8c6f67. 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/IT7H32200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa542d914cbd942c2a8e608236a32f2481ca56ab2a45af6b5f587956814e58c80. 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/QZRP42143222.