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 0x90f88c37bb2811961d6ea2ba1331c74945d6423764e55b84c7cca7a0f774870f. 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/65747d64-f936-4b5d-87ee-105b972c6446.json and https://artists.proofprofile.net/proofs/artist/65747d64-f936-4b5d-87ee-105b972c6446.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 0x64ee35bedb86b4026bde6a1d45c40cf9bd73535ce95e671711ff3c4368847dea. 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/QZNJW2347881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9987024196bc6c5c9af0fbea5bf9d54462ecbe448da1f5e6eb573bb0218b3624. 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/QZNJW2347882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cf8fcd83f20fb30560f325f22c83aa85630c1e21790356982af3c52d80a2207. 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/USDY42215574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ead0540e8a17815f56d58c5ee37a5446f6784c49bc069634138d98be9c76fe. 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/USCGJ2201084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da15d81e7900927a708290991d4b2307928f533859ed4918e8046275219d9bd. 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/QZNJW2347885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ac586fdf74ce361d70c5fa0967db423ccdde7b0f5cca33305a6db4edb5e4f4. 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/QZNJW2347887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07fd5508685d03721dfbcedf15a8d2f880915fd479782956cab13c1fe6da8e84. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QZNJW2347889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d7ff3d37d2acf7da60d2a8a4efbc99a293019d56396ace2f5074cb09585fc8. 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/QZNJW2347890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86a4bebe017b7a10fe0445bdb914634a1120af9b41a8d95ddc2d0ce276f7eda7. 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/QZNJW2347891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd117de252064fa83be56fe5337904fc41894781748e2483ca682c6c96e760fc7. 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/QZNJW2347892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x188315e130a6696ee2527818731ae524cf12d9fd3daf6fab814e097fdce7af01. 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/QZNJW2347893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x071682bdbb9e784fa4fe32549780c6a371359efb4db962417a930c29fd5cee45. 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/TCADM1837827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x269d0f50ac2ffa7a27597e6fd289facc1a4303e1ab37904f2f87f223f44a0e51. 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/TCADM1837829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eaadf71b442a7cc02b3b915846b50b731db1cae239dfcc1246cd5218fca4c5d. 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/TCADM1837831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00513f0eaaf911331c124c8dd0e61f3ccd44b470e2363b00c9360fe6510f4d37. 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/TCADM1837832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92ce11706866349b0c08e2189dc2754eb31e533fe35b0c8eee954ff1ed482a78. 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/TCADM1837834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa2fe4081ca7142b8fdbac54f78347303263a8392747d29a993f1094d9f581c4. 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/TCADM1837837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa420e2426d0470e4c5ff9b48c67f249818c45638e3ac5c2c578c0d2b29f6f06. 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/TCADM1837842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ce680444250f7dfbad79f936bf585ec51bffaae0f5299bd7da76168aa4d219. 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/TCADM1837846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd01f9b851ef455a8a8fc4ceb282f778d0bb65aa6f94fa43ccaf3f1086a62b348. 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/TCADM1837848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb4f68b54e92513167e21527279095099b15356b4f588ae2562be04ef1d3716e. 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/TCADM1837851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe75a87861799eeaffc57e24ed73277bc475c2cef3a6b05070cdd7ee8e90dce8. 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/TCADM1837853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6c6916503516e1884b6e695628504bf22f9cb2227a2683a079d53429ac918eb. 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/TCADM1837854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7790ad7d55cd646ff124a430a58b2b7ba6bd202e722bd5e38d05f50d3f9f015e. 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/TCADM1837857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53a80948778a536716f77a7186f941274b9c6f5b1516048bf0f6a4b979d4a59b. 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/TCADM1837863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4088816963a20a397c99a43a2ff84f5e1b70b34b59705dec344db902886cd4e7. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:53:23Z), 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/TCADM1837833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18bbeb24cebc0b365dd69059d268f914f00b8701839ea83477d2826d7b4a9621. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:55:12Z), 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/TCADM1837849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7936ca5068f72a5c6ff772ed2973844b4af9932f2e17456f3a29cde793ee1700. 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/US7VG2489910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25026b5e7132cbad8527f94f987833fea5318cd4f64b2c791b1dd85e75961064. 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/QZNJV2320733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cf8fcd83f20fb30560f325f22c83aa85630c1e21790356982af3c52d80a2207. 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/USDY42215574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ead0540e8a17815f56d58c5ee37a5446f6784c49bc069634138d98be9c76fe. 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/USCGJ2201084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf32454c22ee38058ddf3c449be8879b71ea66fdee4c36a6b519951ceed26a9cf. 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/QZMZ92370825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b7e9587ff5bc1ce57069eec5b6720df467d64848d0dd662243e5a1253275da. 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/QZFZ52170577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a17489b7f22d4ab30ec41d37c8a2784eb02f4ca6f173be90008f51dc254f7fa. 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/TCAEU2025853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7430b21ec8ee9a4c2a5261e1c80427c098e2c3b3cdd5c3f941868ace292bfc04. 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/TCAEA1827470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc45cef396f5176aad404eddf7f4d26e8e4ffb804b50856a785e1b98a57975985. 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/QZ9JZ1724992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x569492c918fd59b31e18ae89f1facd95fa0df448de94bcef6bb72c88c9bab919. 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/QZ5AB2289376.