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 0xe60a0832a26ed33cb9d6a6373d3242189d88f907299b009f8c8bd1557e3caeba. 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/61627cc5-c370-4112-9eff-05f28967cff8.json and https://artists.proofprofile.net/proofs/artist/61627cc5-c370-4112-9eff-05f28967cff8.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 0x35f83f586ca474435efd6af179c44d298cb7a5d76e0ee51930b02b020979f015. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GBKPL1786672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8817e245869e7a37623381629f5ccca88ddff326f945f3998a6220092f9adb62. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FR2X41855229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39707bec206be983a5397969afe7adac61af20dfaba58695aaf32d49f1e355bd. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GB45A1801157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c22ef1848349255dababf2410e823e2354176965d466b04a057a42d719bf274. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:04:15Z), 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/TCAEH1924471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95fb7c7c80df722c27305f8bb8ab280de3a80550c20ee9ee19792f4900b5fc57. 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/TCAEH1924479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa42b9146d8489b3b63172c98363395422d6daa7451d7e3485eccc79f6b1ea04d. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:57:48Z), 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/TCAEH1924482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cfb47c86ce42a346ff1bb3f52863f3d2b34449957a575bbdf7a5a260132efd2. 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/TCAEL1945588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18cc0a07164e94bf6023f1cdce42829624482b55738076d14dda3ccb913e4730. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/QZK9T2000030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da04c60546b397ecd82638c325f1c7bfefd02276141ff52bc352a3d64681e49. 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/GBKPL2010419.
Spanish Rose (with Denise Rosenthal) [Spanish Version]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea9fc1614363cd2f20140f5b5bb307eefe628e5ad03c4fe3d19687f385b908e. 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/GBKPL2208653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe0cf8a00894b42c8a315ec413eeb06b4d628d62c9b761a8c206f14e2a1f640. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QMDA72205619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18f49d3523b8eaa4eaf37e1ad5001636f3c1c9e4ddff3d1953f36022faa95b11. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:55:22Z), 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/USP6L2403006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b1c32a6e83980bf0b45f4afe72217803859853ec2d62b8aee102c1f7c4a9d1. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/USP6L2403007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18f49d3523b8eaa4eaf37e1ad5001636f3c1c9e4ddff3d1953f36022faa95b11. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/USP6L2403006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f51a240ba4b34465bf30a20b07d42a066609556cc6e265d14accc5e50cce227. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:40:39Z), 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/USP6L2403010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b1c32a6e83980bf0b45f4afe72217803859853ec2d62b8aee102c1f7c4a9d1. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/USP6L2403007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18f49d3523b8eaa4eaf37e1ad5001636f3c1c9e4ddff3d1953f36022faa95b11. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/USP6L2403006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb0c0679b4daa004e1426b2cb087f1e1e02bfa2fa8d0dd6eca49e58c4324522a. 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/GBKPL1785345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6bb669fcfbe0f2743fa14b596b6d3b6921dc451b176af9bed534b429e140d79. 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/US23A1500326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18dbdd986e8422ab721cd56b48886d7bf8a149ddb71241ad732f3fd3be9d0c80. 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/US23A1500238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f2078bc7a2bb6351fd263171cf8107ee3b8facc040e21644a4c85c9e6d1961. 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/GBKPL2161812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeec0f0f0b2f225a36bfe018dd6e2216e3739c7a7de63296669f82ab4fc3d71f8. 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/FRU702000199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x465c51ade71d4832f456c7414a7074b2177516dfb3ff45aa6f6cc3a136daf132. 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/GB45A1700813.