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 0xefdeb908d8fcf216d4e2bf30554ee29b3b1f75b65d7be2ba8e4ae6d8b3f2ffef. 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/4c5a2fd9-0b03-4686-9b7b-b4af55959c9a.json and https://artists.proofprofile.net/proofs/artist/4c5a2fd9-0b03-4686-9b7b-b4af55959c9a.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 0x78ede7a58fe2f77c32802709ffd19e4eac8e0d21c8974853485650d9c7c68164. 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/QM6N22328287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46af0afa37d1d1366573a9d157621449b8c63cc080d0f267dbb11e597c74f55b. 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/QM6N22328288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f40214f741317c94427f1d83a6d61b7c7acc0681a0d31220b3c454f5f3b13b. 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/QM6N22328290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf56b77a06e80e447191b937f6b0aecaac9d41f3f7570a1cf185793b3313432f7. 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/QM6N22328291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x174059f00db8f3beb93ce93c2ba45c8608421cf90a441338cf09599c5389e033. 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/QM6N22328292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91ac36c44aae0eb82ba941b619d9ea5cfa44797d27eff4f01c5dc1cbdab37a48. 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/USZ4V2300225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a34f9f99af48bf8bb889fe588aef7fcccad88286ee726059fc46a0e1b6fbddd. 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/QM6N22444622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a34f9f99af48bf8bb889fe588aef7fcccad88286ee726059fc46a0e1b6fbddd. 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/QM6N22444622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf7cc6d885f7d39dc204836ca5b24f8e94021dbc40a3e0a0a3cdac7ffec4853. 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/USZ4V2400207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91ac36c44aae0eb82ba941b619d9ea5cfa44797d27eff4f01c5dc1cbdab37a48. 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/USZ4V2300225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78ede7a58fe2f77c32802709ffd19e4eac8e0d21c8974853485650d9c7c68164. 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/QM6N22328287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f99a418ac67eab7181913103c4827291a5c3ae61a94b2e1b3a2b085869c955. 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/QM6P42327710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a8180618d83b00801ceea1e899f66e2787327056f10dc442e5cfcde9545a86a. 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/QM6MZ2337168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0551dcf74cc5db46368f0f426f64b8145cde3275f597f37c231bbaed4f7db32c. 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/NL4NL2210492.
Space Sum (feat. Soli) - DJ Tennis Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddf7ad6dd807e3246a25dfa6854a3c0ee8873b35d1183513cfe2256fa0fbfd2c. 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/GBJX32155015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a513777a2f9cac102f45e199b1df2d157cfa68bf6b43463f3eb7db335f477c4. 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/DEG932003716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf56daf737a7b8f7d5a6ed4b9ed4bc6a0a544026ac67daffe7f4b8a74c53f4c. 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/DEG932003717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a5f125282f6532906a19b91ae346a64a3cb291277d1df6bcf8aa4b4de79fe9. 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/GBJX31855010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce56142b4fd4345f4fc5eaa6d8ccc85bdba1e20ecd37cc2d5a0937b8bed01f8. 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/DEG932002506.