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 0x4265d52e5abe611965a722c17d0468b7f59b79c1bf386732f508b8097ed2841d. 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/92c2ee57-9185-40cd-91d6-d269826a4a08.json and https://artists.proofprofile.net/proofs/artist/92c2ee57-9185-40cd-91d6-d269826a4a08.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 0xfba2cc253a0abad9e28df28607e3d512e3d2e444ce1d608bd7d53b8ede7f172a. 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/USRDG0219186.
Concerto No. 21 in C Major for Piano and Orchestra, K. 467: II. Andante ("Elvira Madigan")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd82dba27feec57bbd7c2b6596f761296eb892f5f6d2b7b4be4360251bc42d110. 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/USRDG0222769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x634f20da1986d744b1893bedee4bf7651fddf069b57fdc486683eba03bdc9d08. 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/USRDG0226575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b7dbd28ecafbe1329526c328906b9c8de46ad395c2d152cc0174a178011e37b. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USRDG0910075.
The Girl With The Flaxen Hair (from Preludes, Op. 117)
Skaila Kanga, Douglas Gamley & Sinfonia of London
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6419f07dc1796def699ceb24c3769fab9ded38cd38c6914433a9b68106fc0bf8. 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/USRDG0111929.
Total Inner Peace: Classical Music for Hard Times
"Little" Fugue In G Minor (Featured in "The Paper Chase")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6280e6a685fab98d9277757bfb30574edcf1586e79312cc4763c4d698fe576a9. 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/USRDG0218981.
The Merry Widow Waltz (from "The Merry Widow")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78684e3520d62c67fb8a4d9ff289b3f478f71dcd8546c3f3dec057da3063b335. 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/USRDG0110921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49cb2b441444818d4c417f1509e689c700e0cffbe5e18d0e4d42b8cf3b030feb. 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/USRDG0226301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x808f23b52c7f66c8829f756c389ee29ea4d1bbfe1d347ea7f7ab98896b40cd59. 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/SE5IB1600304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888aee65453e283403f94ba3f8c696a581b8641aab5231242709ce877f9926ba. 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/SE5IB1600252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad6395c8097e5c90bb916054f6d3c9250b7d05ef3c72dabab2c19325ba173af. 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/SE5IB1600178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea87ab53e3fd5754e6c41f16c04448a94c51dc8274c261350966bb9eb138ab03. 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/SE5IB1600251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecb9af359b2a2eeec3519528c26ca61e9eb1f27a44584bf3a1984ad7290c6726. 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/SE5IB1600255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f35d1b668b2bb9e2ec80abf27af5193efcde04db4b23c65fb8dd3803f3b29b0. 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/SE5IB1600253.
50 Powerful Sounds for Meditation & Yoga Experience
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x208385757661752fae7d808d3e8d2de5748e41f7109522c452c113a3aaf4dd0d. 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/UK6821642840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa799e46ec3b22ce20570f9ad1eb502e19aad0d7dd1a87a0cfbe26a2a793f17a1. 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/UK6821712775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad3c06f49b9c5eb01334eeb5df6f2005e53959bcab761498d74ba18d9f9996a7. 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/UK6821738727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb04af8cc39f4aa9d61bd26cfcfaf0df81987de7004891a00ef38b6f03e766334. 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/UK6821728961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bcfad02acb86e7d603d2f24fa76ef9bb38aa3a44196631570bf9d668a9ebc1b. 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/UK6821738676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaac28803d6ac4167f4acb52e41611a6f477d04474268a408159fa8cee582801. 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/UK6821702597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf5881a8cc4359657c1dcc5a83e1859edda0dbc7cccf04a9d87a7574158f3dc6. 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/UK6821738699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba262880dcad3f48d645aecb3e6d84f97f7d28657fd459e2f2fc8d80e8ba804e. 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/UK6821840913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46d3e16b461f0b84a4238c1fe7f9282c1471b406b4c27453ee272df77c2904da. 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/UK6821848117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21a9d06257e81ce963059e7b8d4091af0487d80f8fb74ec7ac4cf0c673888c8. 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/UK6821738715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc41d4d14a1fd720405910750b48a2aa9c1f15e42bf9ff346f8195d2ca9ac63dd. 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/UK6821738701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd37754e353c19663c4f6a8ab960a01499e7fa09d3462930372a66fa4dc61b96. 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/UK6821737650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2277241849495c9f70137c99d4c7c71d82b76378a79c6dca6af050a5f5f00804. 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/UK6821737629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x902d66e225f6c08c31599dd57bc275473ddd162d7b8b563ba0582869186bb32c. 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/UK6821737647.
50 Piano Tracks for a Restful Study Focus and Complete Relaxation