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 0x4f50b176c8a7f3c049bcab007b57186cbab64df72be6f6307f04bd44652014ca. 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/5f6b9461-ba67-494f-a491-0ca63835f9b0.json and https://artists.proofprofile.net/proofs/artist/5f6b9461-ba67-494f-a491-0ca63835f9b0.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 0x97aa65e5b241bb0243e461a4d5945f9911802e6052fb2def67e547c304b7d1af. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/GBKQU1725968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e89a2211e1431950aeae958e574e297d75f313dcabd8838c61f1187a94871be. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/GBKQU1725971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x349c7b3af20cf64d87944f19033d0f36f240248c647e266db2e05a2c8f638856. 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/NLEW21800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca1215c6e526e3c5bb39e0c72854453b92906b088e05f3e4b6cf5bd36e2340b. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/GBKQU1870513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x032adb8dac630b52d5ca01e3e9df7c68789b9dd1afc95367a4bb479acb1dbb0f. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/GBKQU1868682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13307540491697172192209d1ece58f049b09b7107405d6a57349db5d11d8e1f. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/GBKQU1870514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65d53af4c9cb7554da831174d80efeb735c06ca2a2df4359910f4f374c2dacaf. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/GBKQU1870515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe26ec93903f90bd8c8664121dec1662e242453cf5e0df4e2cc4b3c8519fc6c. 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/GBKQU1868683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42e35a6c757019fa7e3288cb941d89eac305fed97ab021414ccb0dd3898dc80d. 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/GBKQU1941500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bbdedf7f2edbfe633974adeceb066bf811fe17586ef35e70b91d4bb60b78562. 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/GBKQU1941501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a32926bc5b8fa9edc9c3491a28e29ccfd3f244aaa0d4e1c91e3f93d3bef3219. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/FRX201916377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9784503d680d15b934e0bbb5a8bafe52ccc63d2764f83a3baa4aae4eb1e55e6. 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/NLEW22200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b6847636fe6062d3f33de0c6b719cbcb4b6ac291cd6599395403611c7188fe2. 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/NLD682201339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf14e779b188bbe8b83f16a84180ed25b8d3600de65e14370f76e57d6cc196c. 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/NLD682201340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f3090b10c33dda3740eb406d7d551815a775c2cf40b4672f4e231bfb5189a6b. 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/GBEWA2307381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7b20a58c40eac9073842c80f629155b413a09695310cb070ac1d5f9440b1e27. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/NLF712404514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba2ff03e3b3dc8241c3bb4aaee0244b820c92ef4b3216b3a1b42bbd26e58417. 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/GB5KW2001556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa4f3d34d69fe1847c0268bb4f15aee4d2ce26d0d7a8e170fc0335f58087f37f. 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/NLF712003092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80644b03c6f18600a8b353e5106039b1f0e377738203e9bd8ab5432d19c3e4f0. 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/QZUCN2200858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a75293a1875884bbdedf2090187aaf07c21f2522c730596af6fcbf99bfa60c8. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/GBEWA2402496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad345b396ea8414b13dc9e3a71a786a817ad512e7b5c8f44cc272f4ed3d4ff6. 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/GBEWA2400636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x208025a33673aa5ecee01bc2da48f82796bb747ce13c4f81c0c7357b6559d8f3. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/GBEWA2307086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd7431a41fb43a195587bcda5bd4729cb78f4b7b3f9e69d93d27f417423fde49. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/GBEWA2306974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc21758473a0296364c77253fc51c5622373431d45f81285139abd2cb79ac35fb. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/GBKQU2453210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc8fb70be8201136ed0f96fa65fe432fa2a4cb4034300f3f11b8926fd82a5e89. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/GBKQU2411664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc237738ee586285454a27aa07a569a65aa9604bd5641de2000b3347b80a51edb. 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/GBEWA2101624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x111b95628e7488d406edbb71c26159ae07dbb4d72c996c4cd6a73251685c4c09. 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/GBEWA2101625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x225fdddfadbd88faa4b460a3f33c9dac110569e76536f2c3c85365464dc28b49. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/NLD682400717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b4003f94e3c6cf91d7788bc12be7b0d3e4dbbf8cc58f47c542402d541ab53c1. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/NLD682400239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad9545947e64edd1864bf4210242e40d231d1d7b77ca7c79ef8551a5de42cb7. 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/NLD682400128.
Always Will (In Bloom 2023) - Mees Salome Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d8a7dd699a135bd240617a9df6dd249391b5780f8411dd2269b940d720ad226. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/NLD682301698.