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 0xe2e25f9f8ffbeeab953bba7267ed94d35d05c8710efa8edbfc0cec30af6c87ef. 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/bd8e9360-a80e-467b-b063-ef570722f2ac.json and https://artists.proofprofile.net/proofs/artist/bd8e9360-a80e-467b-b063-ef570722f2ac.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 0x0ddc3df8a2fdd08a748f7419251025fc35eab9c95e6ea09d19cefdc2ad4ae6b3. 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/MXUM71902757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2bcdcdecdbdd87fd05f2fef9d7f4347ad7fc4e15c2f47cd2d51b40ad7e2f1e4. 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/MXUM71902758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f8caf2382f1ecde6c7a3d68b2ba923a3779b9e6e77f0702df2d556ae5e93d1. 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/MXUM71902759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8096dc2138f45d3390b48cc5692864c069c529a5c8819c8220005bbf1adad2b2. 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/MXUM71902760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb7a6752289230ab82c83e4a0c0bb8f7d4b3696e4f74a0d0fbb4f1108f9143f4. 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/MXUM71902761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c42da6c4570236c867a0b6b89ac1d80fd3480453ed6ae439ff86c3a21e598d7. 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/MXUM71902762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c4ee278e5203ab736c7bf045ea3934bc396ffa2604feb33f6caff0774cfffbd. 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/MXUM71902764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac293d2bcc002c10103bc4eb9726cdc2199fadb97e2669935daf8f3575cf94b9. 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/MXUM71902765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e68d1c28e9113123f0a021b925f71ca45a834584d0ad9b11d250a0cf3a09af. 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/MXUM72200722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946176e33ebf3cef502d3bb5fffebe2bff1a78688a2ea3beac45602bca4ddea5. 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/MXUM72201644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb5c05e8098381e101f056758c4730dcb9b91f177f264dd6290f12c501e49eff. 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/MXUM72201645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cf6394cca5b3eb27296c2c84628d1fcab3ccae15055ef89e88224ef101a2b77. 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/MXUM72201643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf286ccb8a5bb7c4c37b102cee6403e6e195e09789e38cf6510911c580f2f75e5. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/MXUM72201642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae13e425aee2a8185d2a6ce138396def63ed9240f9c1bebd04e2a5075d7fae0b. 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/MXUM72201475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61dfee36c1998a8dda594166b7b9ad95e4a402a54f32d031a050f1cd3be83fbd. 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/MXUM72201641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ef983d3587285a18e9db3c19fd1859e1d3fbc3cc3ba9142964a0934510f447. 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/MXUM72201647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946176e33ebf3cef502d3bb5fffebe2bff1a78688a2ea3beac45602bca4ddea5. 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/MXUM72201644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31fd1587a10888c20574b695f0410c903233e48b421b79e2c05d2583ff1eef80. 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/MXUM72201646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ac80c315a01d9fba67dd666d720a6c9265b6ad2f4c66838804f53d661007bf. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/MXUM72101973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e6bc506252e4432a8a695cdf2468774c6d8c17e0710de23c35eda6e6019060. 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/MXUM72101002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38197f559e28b78557dc56c0b5ebafe4c93e5759de5e2fa58ea854c8aa4a0069. 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/MXUM72008827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d9a371c3e6c798f52060928474395d7244933b92ddd3f32380789b577be568. 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/MXUM72101003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf40f09c78546051216462f4366a937dc5b3f117df68efceaa4dbbccf0057bfe3. 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/MXUM72101636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150edb9b57ce6ede90fc5f19fb91b12dde8096579fd2a0cb1188471a18de1ce8. 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/MXUM72100753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0555b50dce615be21276f3fbc853eeffc70c7bbfb64f8f15790e6a1113ba9e56. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/MXUM72101975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb025d3144ec45f0044e3a3cee222648e7383ebd537af661cc2b428d3579d0050. 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/MXUM72100641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae13e425aee2a8185d2a6ce138396def63ed9240f9c1bebd04e2a5075d7fae0b. 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/MXUM72201475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa18ef43bfa5c25e669c948b227ddc3817ab1d215ce32c920ad3a5c9d71e7559e. 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/MXB232100040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe335ee343d68179b60c4e6215264a2f64c8c43cc2f98f4df0cb3f45fa992867d. 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/MXUM72103219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf40f09c78546051216462f4366a937dc5b3f117df68efceaa4dbbccf0057bfe3. 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/MXUM72101636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e6bc506252e4432a8a695cdf2468774c6d8c17e0710de23c35eda6e6019060. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/MXUM72101002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150edb9b57ce6ede90fc5f19fb91b12dde8096579fd2a0cb1188471a18de1ce8. 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/MXUM72100753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb025d3144ec45f0044e3a3cee222648e7383ebd537af661cc2b428d3579d0050. 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/MXUM72100641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38197f559e28b78557dc56c0b5ebafe4c93e5759de5e2fa58ea854c8aa4a0069. 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/MXUM72008827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c4ee278e5203ab736c7bf045ea3934bc396ffa2604feb33f6caff0774cfffbd. 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/MXUM71902764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2bcdcdecdbdd87fd05f2fef9d7f4347ad7fc4e15c2f47cd2d51b40ad7e2f1e4. 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/MXUM71902758.